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_spec2_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:04:13,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:04:13,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:04:13,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:04:13,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:04:13,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:04:13,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:04:13,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:04:13,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:04:13,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:04:13,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:04:13,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:04:13,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:04:13,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:04:13,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:04:13,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:04:13,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:04:13,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:04:13,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:04:13,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:04:13,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:04:13,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:04:13,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:04:13,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:04:13,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:04:13,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:04:13,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:04:13,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:04:13,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:04:13,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:04:13,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:04:13,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:04:13,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:04:13,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:04:13,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:04:13,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:04:13,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:04:13,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:04:13,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:04:13,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:04:13,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:04:13,250 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 [2019-10-13 23:04:13,273 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:04:13,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:04:13,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:04:13,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:04:13,276 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:04:13,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:04:13,277 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:04:13,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:04:13,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:04:13,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:04:13,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:04:13,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:04:13,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:04:13,278 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:04:13,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:04:13,278 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:04:13,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:04:13,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:04:13,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:04:13,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:04:13,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:04:13,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:04:13,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:04:13,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:04:13,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:04:13,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:04:13,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:04:13,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:04:13,281 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 [2019-10-13 23:04:13,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:04:13,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:04:13,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:04:13,578 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:04:13,578 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:04:13,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-13 23:04:13,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dedfe334/6384a5aa6139491e8c5b4c5e3dc400e3/FLAG34c7201f2 [2019-10-13 23:04:14,259 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:04:14,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product29.cil.c [2019-10-13 23:04:14,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dedfe334/6384a5aa6139491e8c5b4c5e3dc400e3/FLAG34c7201f2 [2019-10-13 23:04:14,464 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dedfe334/6384a5aa6139491e8c5b4c5e3dc400e3 [2019-10-13 23:04:14,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:04:14,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:04:14,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:14,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:04:14,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:04:14,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:14" (1/1) ... [2019-10-13 23:04:14,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3383c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:14, skipping insertion in model container [2019-10-13 23:04:14,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:14" (1/1) ... [2019-10-13 23:04:14,493 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:04:14,575 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:04:15,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:15,315 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:04:15,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:04:15,502 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:04:15,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15 WrapperNode [2019-10-13 23:04:15,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:04:15,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:04:15,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:04:15,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:04:15,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (1/1) ... [2019-10-13 23:04:15,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:04:15,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:04:15,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:04:15,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:04:15,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (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 [2019-10-13 23:04:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:04:15,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:04:15,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:15,805 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:04:15,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:04:15,806 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:04:15,806 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:04:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:04:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:04:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:04:15,807 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:04:15,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:04:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:04:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:04:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:04:15,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:04:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:04:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:04:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:04:15,812 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:04:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:04:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:04:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:04:15,813 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:04:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:04:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:04:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:04:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:04:15,814 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:04:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:15,815 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:04:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:04:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:04:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:15,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:04:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:04:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:04:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:04:15,817 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:04:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:04:15,818 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:04:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:04:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:04:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:04:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:04:15,819 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:04:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:04:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:04:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:04:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:04:15,820 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:04:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:04:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:04:15,821 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:04:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:04:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:04:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:04:15,822 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:04:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:04:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:04:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:04:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:04:15,823 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:04:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:04:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:15,825 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:04:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:04:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:04:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:04:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:04:15,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:04:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:04:15,828 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:04:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:04:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:04:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:04:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:04:15,829 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:04:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:04:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:04:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:04:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:04:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:04:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:04:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:04:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:04:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:04:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:04:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:04:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:04:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:04:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:04:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:04:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:04:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:04:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:04:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:04:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:04:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:04:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:04:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-13 23:04:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:04:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:04:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:04:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:04:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:04:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:04:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-13 23:04:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:04:15,836 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:04:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-13 23:04:15,837 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:04:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:04:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:04:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:04:15,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:04:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:04:15,839 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:04:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:04:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:04:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:04:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:04:15,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:04:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:04:15,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:04:15,842 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:04:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:04:15,846 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:04:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:04:15,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:04:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:04:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:04:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:04:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:04:15,848 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:04:15,849 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:04:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:04:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:04:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:04:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:04:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:04:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:04:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:04:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:04:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:04:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:04:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:04:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:04:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:04:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:04:15,861 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:04:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:04:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:04:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:04:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:04:15,862 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:04:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:04:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:04:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:04:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:04:15,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:04:20,830 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:04:20,831 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:04:20,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:20 BoogieIcfgContainer [2019-10-13 23:04:20,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:04:20,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:04:20,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:04:20,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:04:20,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:14" (1/3) ... [2019-10-13 23:04:20,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f01c2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:20, skipping insertion in model container [2019-10-13 23:04:20,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:15" (2/3) ... [2019-10-13 23:04:20,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f01c2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:20, skipping insertion in model container [2019-10-13 23:04:20,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:20" (3/3) ... [2019-10-13 23:04:20,841 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2019-10-13 23:04:20,851 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:04:20,861 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:04:20,873 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:04:20,906 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:04:20,906 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:04:20,906 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:04:20,906 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:04:20,906 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:04:20,906 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:04:20,906 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:04:20,907 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:04:20,939 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states. [2019-10-13 23:04:20,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 23:04:20,960 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:20,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:20,964 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:20,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1929205002, now seen corresponding path program 1 times [2019-10-13 23:04:20,980 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:20,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238968622] [2019-10-13 23:04:20,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:20,981 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:20,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:21,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238968622] [2019-10-13 23:04:21,793 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:21,793 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:04:21,794 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982048618] [2019-10-13 23:04:21,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:04:21,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:21,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:04:21,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:21,820 INFO L87 Difference]: Start difference. First operand 574 states. Second operand 9 states. [2019-10-13 23:04:27,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:27,557 INFO L93 Difference]: Finished difference Result 1415 states and 2165 transitions. [2019-10-13 23:04:27,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 23:04:27,561 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-13 23:04:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:27,598 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 23:04:27,598 INFO L226 Difference]: Without dead ends: 989 [2019-10-13 23:04:27,608 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2019-10-13 23:04:27,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2019-10-13 23:04:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 957. [2019-10-13 23:04:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2019-10-13 23:04:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1460 transitions. [2019-10-13 23:04:27,786 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1460 transitions. Word has length 106 [2019-10-13 23:04:27,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:27,787 INFO L462 AbstractCegarLoop]: Abstraction has 957 states and 1460 transitions. [2019-10-13 23:04:27,787 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:04:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1460 transitions. [2019-10-13 23:04:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-10-13 23:04:27,798 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:27,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:27,799 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:27,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:27,801 INFO L82 PathProgramCache]: Analyzing trace with hash 184369952, now seen corresponding path program 1 times [2019-10-13 23:04:27,801 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:27,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808323428] [2019-10-13 23:04:27,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:27,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:27,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:28,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808323428] [2019-10-13 23:04:28,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:28,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:28,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247491620] [2019-10-13 23:04:28,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:28,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:28,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:28,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:28,196 INFO L87 Difference]: Start difference. First operand 957 states and 1460 transitions. Second operand 7 states. [2019-10-13 23:04:28,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:28,316 INFO L93 Difference]: Finished difference Result 1530 states and 2349 transitions. [2019-10-13 23:04:28,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:28,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2019-10-13 23:04:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:28,330 INFO L225 Difference]: With dead ends: 1530 [2019-10-13 23:04:28,330 INFO L226 Difference]: Without dead ends: 994 [2019-10-13 23:04:28,334 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 [2019-10-13 23:04:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2019-10-13 23:04:28,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 978. [2019-10-13 23:04:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2019-10-13 23:04:28,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1490 transitions. [2019-10-13 23:04:28,414 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1490 transitions. Word has length 111 [2019-10-13 23:04:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:28,414 INFO L462 AbstractCegarLoop]: Abstraction has 978 states and 1490 transitions. [2019-10-13 23:04:28,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1490 transitions. [2019-10-13 23:04:28,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:28,420 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:28,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:28,420 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:28,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1325589972, now seen corresponding path program 1 times [2019-10-13 23:04:28,421 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:28,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840504750] [2019-10-13 23:04:28,421 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:28,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:28,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:28,582 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840504750] [2019-10-13 23:04:28,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:28,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:28,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841765786] [2019-10-13 23:04:28,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:28,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:28,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:28,584 INFO L87 Difference]: Start difference. First operand 978 states and 1490 transitions. Second operand 7 states. [2019-10-13 23:04:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:28,679 INFO L93 Difference]: Finished difference Result 1559 states and 2387 transitions. [2019-10-13 23:04:28,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:28,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-13 23:04:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:28,688 INFO L225 Difference]: With dead ends: 1559 [2019-10-13 23:04:28,688 INFO L226 Difference]: Without dead ends: 1009 [2019-10-13 23:04:28,693 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 [2019-10-13 23:04:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2019-10-13 23:04:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 981. [2019-10-13 23:04:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2019-10-13 23:04:28,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1493 transitions. [2019-10-13 23:04:28,763 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1493 transitions. Word has length 112 [2019-10-13 23:04:28,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:28,763 INFO L462 AbstractCegarLoop]: Abstraction has 981 states and 1493 transitions. [2019-10-13 23:04:28,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1493 transitions. [2019-10-13 23:04:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:04:28,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:28,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:28,767 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash 141031500, now seen corresponding path program 1 times [2019-10-13 23:04:28,768 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:28,768 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735420316] [2019-10-13 23:04:28,768 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:28,769 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:28,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:28,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735420316] [2019-10-13 23:04:28,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:28,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:28,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802927899] [2019-10-13 23:04:28,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:28,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:28,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:28,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:28,954 INFO L87 Difference]: Start difference. First operand 981 states and 1493 transitions. Second operand 7 states. [2019-10-13 23:04:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:29,050 INFO L93 Difference]: Finished difference Result 1564 states and 2392 transitions. [2019-10-13 23:04:29,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:04:29,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2019-10-13 23:04:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:29,060 INFO L225 Difference]: With dead ends: 1564 [2019-10-13 23:04:29,060 INFO L226 Difference]: Without dead ends: 1012 [2019-10-13 23:04:29,064 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 [2019-10-13 23:04:29,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2019-10-13 23:04:29,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 984. [2019-10-13 23:04:29,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-10-13 23:04:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1496 transitions. [2019-10-13 23:04:29,128 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1496 transitions. Word has length 112 [2019-10-13 23:04:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:29,129 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1496 transitions. [2019-10-13 23:04:29,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1496 transitions. [2019-10-13 23:04:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-10-13 23:04:29,132 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:29,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:29,133 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:29,133 INFO L82 PathProgramCache]: Analyzing trace with hash 631146580, now seen corresponding path program 1 times [2019-10-13 23:04:29,133 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:29,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050684557] [2019-10-13 23:04:29,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:29,134 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:29,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:29,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050684557] [2019-10-13 23:04:29,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:29,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:29,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970744960] [2019-10-13 23:04:29,451 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:29,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:29,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:29,452 INFO L87 Difference]: Start difference. First operand 984 states and 1496 transitions. Second operand 7 states. [2019-10-13 23:04:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:33,176 INFO L93 Difference]: Finished difference Result 2108 states and 3225 transitions. [2019-10-13 23:04:33,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:04:33,177 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2019-10-13 23:04:33,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:33,192 INFO L225 Difference]: With dead ends: 2108 [2019-10-13 23:04:33,193 INFO L226 Difference]: Without dead ends: 1429 [2019-10-13 23:04:33,197 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2019-10-13 23:04:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1379. [2019-10-13 23:04:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2019-10-13 23:04:33,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 2057 transitions. [2019-10-13 23:04:33,290 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 2057 transitions. Word has length 116 [2019-10-13 23:04:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:33,291 INFO L462 AbstractCegarLoop]: Abstraction has 1379 states and 2057 transitions. [2019-10-13 23:04:33,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 2057 transitions. [2019-10-13 23:04:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:33,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:33,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:33,295 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:33,295 INFO L82 PathProgramCache]: Analyzing trace with hash -485888599, now seen corresponding path program 1 times [2019-10-13 23:04:33,295 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:33,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481079455] [2019-10-13 23:04:33,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:33,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:33,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:33,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481079455] [2019-10-13 23:04:33,522 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:33,522 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:04:33,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740206022] [2019-10-13 23:04:33,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:04:33,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:33,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:04:33,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:33,524 INFO L87 Difference]: Start difference. First operand 1379 states and 2057 transitions. Second operand 9 states. [2019-10-13 23:04:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:33,892 INFO L93 Difference]: Finished difference Result 2681 states and 4102 transitions. [2019-10-13 23:04:33,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:04:33,892 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2019-10-13 23:04:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:33,909 INFO L225 Difference]: With dead ends: 2681 [2019-10-13 23:04:33,910 INFO L226 Difference]: Without dead ends: 1583 [2019-10-13 23:04:33,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:04:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2019-10-13 23:04:34,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2019-10-13 23:04:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2019-10-13 23:04:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2361 transitions. [2019-10-13 23:04:34,028 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2361 transitions. Word has length 119 [2019-10-13 23:04:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:34,029 INFO L462 AbstractCegarLoop]: Abstraction has 1583 states and 2361 transitions. [2019-10-13 23:04:34,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:04:34,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2361 transitions. [2019-10-13 23:04:34,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:34,034 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:34,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:34,035 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:34,036 INFO L82 PathProgramCache]: Analyzing trace with hash -164315477, now seen corresponding path program 1 times [2019-10-13 23:04:34,036 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:34,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593122122] [2019-10-13 23:04:34,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,037 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:34,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:34,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593122122] [2019-10-13 23:04:34,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:34,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:04:34,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681155288] [2019-10-13 23:04:34,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:04:34,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:34,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:04:34,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:04:34,238 INFO L87 Difference]: Start difference. First operand 1583 states and 2361 transitions. Second operand 6 states. [2019-10-13 23:04:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:39,063 INFO L93 Difference]: Finished difference Result 6480 states and 10045 transitions. [2019-10-13 23:04:39,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 23:04:39,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-10-13 23:04:39,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:39,100 INFO L225 Difference]: With dead ends: 6480 [2019-10-13 23:04:39,100 INFO L226 Difference]: Without dead ends: 4940 [2019-10-13 23:04:39,113 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:04:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2019-10-13 23:04:39,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4565. [2019-10-13 23:04:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2019-10-13 23:04:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6964 transitions. [2019-10-13 23:04:39,430 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6964 transitions. Word has length 119 [2019-10-13 23:04:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:39,431 INFO L462 AbstractCegarLoop]: Abstraction has 4565 states and 6964 transitions. [2019-10-13 23:04:39,432 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:04:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6964 transitions. [2019-10-13 23:04:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:39,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:39,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:39,436 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2015129963, now seen corresponding path program 1 times [2019-10-13 23:04:39,436 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:39,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847440501] [2019-10-13 23:04:39,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:39,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:39,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:04:39,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847440501] [2019-10-13 23:04:39,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:39,608 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:04:39,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646440261] [2019-10-13 23:04:39,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:04:39,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:39,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:04:39,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:04:39,611 INFO L87 Difference]: Start difference. First operand 4565 states and 6964 transitions. Second operand 7 states. [2019-10-13 23:04:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:43,041 INFO L93 Difference]: Finished difference Result 8185 states and 12553 transitions. [2019-10-13 23:04:43,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:04:43,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2019-10-13 23:04:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:43,083 INFO L225 Difference]: With dead ends: 8185 [2019-10-13 23:04:43,083 INFO L226 Difference]: Without dead ends: 4735 [2019-10-13 23:04:43,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:04:43,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2019-10-13 23:04:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 4649. [2019-10-13 23:04:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4649 states. [2019-10-13 23:04:43,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 7070 transitions. [2019-10-13 23:04:43,368 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 7070 transitions. Word has length 121 [2019-10-13 23:04:43,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:43,369 INFO L462 AbstractCegarLoop]: Abstraction has 4649 states and 7070 transitions. [2019-10-13 23:04:43,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:04:43,369 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 7070 transitions. [2019-10-13 23:04:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:04:43,374 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:43,375 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:43,375 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:43,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:43,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1115685917, now seen corresponding path program 1 times [2019-10-13 23:04:43,376 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:43,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988776427] [2019-10-13 23:04:43,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:43,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:43,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-13 23:04:43,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988776427] [2019-10-13 23:04:43,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:43,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:43,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349988272] [2019-10-13 23:04:43,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:43,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:43,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:43,577 INFO L87 Difference]: Start difference. First operand 4649 states and 7070 transitions. Second operand 4 states.