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_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:03:42,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:03:42,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:03:42,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:03:42,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:03:42,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:03:42,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:03:42,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:03:42,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:03:42,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:03:42,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:03:42,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:03:42,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:03:42,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:03:42,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:03:42,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:03:42,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:03:42,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:03:42,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:03:42,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:03:42,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:03:42,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:03:42,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:03:42,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:03:42,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:03:42,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:03:42,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:03:42,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:03:42,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:03:42,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:03:42,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:03:42,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:03:42,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:03:42,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:03:42,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:03:42,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:03:42,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:03:42,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:03:42,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:03:42,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:03:42,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:03:42,199 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 23:03:42,234 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:03:42,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:03:42,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:03:42,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:03:42,236 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:03:42,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:03:42,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:03:42,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:03:42,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:03:42,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:03:42,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:03:42,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:03:42,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:03:42,238 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:03:42,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:03:42,238 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:03:42,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:03:42,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:03:42,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:03:42,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:03:42,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:03:42,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:03:42,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:03:42,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:03:42,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:03:42,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:03:42,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:03:42,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:03:42,241 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 23:03:42,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:03:42,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:03:42,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:03:42,554 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:03:42,554 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:03:42,555 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product19.cil.c [2019-10-13 23:03:42,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197cdf9f1/1ce6ab1271ea415b84710a73afc5710e/FLAG659c9b065 [2019-10-13 23:03:43,363 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:03:43,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product19.cil.c [2019-10-13 23:03:43,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197cdf9f1/1ce6ab1271ea415b84710a73afc5710e/FLAG659c9b065 [2019-10-13 23:03:43,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197cdf9f1/1ce6ab1271ea415b84710a73afc5710e [2019-10-13 23:03:43,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:03:43,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:03:43,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:43,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:03:43,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:03:43,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b14516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:43, skipping insertion in model container [2019-10-13 23:03:43,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:43" (1/1) ... [2019-10-13 23:03:43,565 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:03:43,655 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:03:44,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:44,473 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:03:44,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:03:44,648 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:03:44,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44 WrapperNode [2019-10-13 23:03:44,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:03:44,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:03:44,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:03:44,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:03:44,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (1/1) ... [2019-10-13 23:03:44,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:03:44,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:03:44,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:03:44,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:03:44,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (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 23:03:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:03:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:03:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-13 23:03:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-13 23:03:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-13 23:03:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-13 23:03:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-13 23:03:44,931 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-13 23:03:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-13 23:03:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-13 23:03:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-13 23:03:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-13 23:03:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-13 23:03:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-13 23:03:44,933 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-13 23:03:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-13 23:03:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-13 23:03:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-13 23:03:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-13 23:03:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-13 23:03:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-13 23:03:44,935 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-13 23:03:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-13 23:03:44,936 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:03:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-13 23:03:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-13 23:03:44,937 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-13 23:03:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-13 23:03:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:03:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-13 23:03:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-13 23:03:44,938 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-13 23:03:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-13 23:03:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-13 23:03:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-13 23:03:44,939 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-13 23:03:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-13 23:03:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:03:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-13 23:03:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-13 23:03:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-13 23:03:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-13 23:03:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-13 23:03:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-13 23:03:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-13 23:03:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-13 23:03:44,942 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-13 23:03:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-13 23:03:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-13 23:03:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-13 23:03:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-13 23:03:44,943 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:03:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-13 23:03:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-13 23:03:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-13 23:03:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:03:44,944 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-13 23:03:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:03:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:03:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:03:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:03:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:03:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:03:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:03:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:03:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:03:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:03:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:03:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:03:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:03:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-13 23:03:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-13 23:03:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-13 23:03:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-13 23:03:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-13 23:03:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-13 23:03:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-13 23:03:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-13 23:03:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-13 23:03:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:03:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-13 23:03:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-13 23:03:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-13 23:03:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-13 23:03:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-13 23:03:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-13 23:03:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-13 23:03:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-13 23:03:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-13 23:03:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-13 23:03:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-13 23:03:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-13 23:03:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-13 23:03:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-13 23:03:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-13 23:03:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:03:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-13 23:03:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-13 23:03:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-13 23:03:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-13 23:03:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2019-10-13 23:03:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-13 23:03:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-13 23:03:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2019-10-13 23:03:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-13 23:03:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-13 23:03:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-13 23:03:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3 [2019-10-13 23:03:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:03:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-13 23:03:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:03:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-13 23:03:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-13 23:03:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-13 23:03:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:03:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:03:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:03:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4 [2019-10-13 23:03:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-13 23:03:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-13 23:03:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-13 23:03:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 23:03:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-13 23:03:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-13 23:03:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-13 23:03:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-13 23:03:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-13 23:03:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-13 23:03:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-13 23:03:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-13 23:03:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-13 23:03:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-13 23:03:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:03:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-13 23:03:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:03:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:03:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:03:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:03:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:03:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:03:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:03:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:03:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:03:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:03:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:03:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:03:44,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:03:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:03:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:03:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:03:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:03:44,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:03:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:03:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:03:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:03:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:03:44,964 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:03:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:03:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:03:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:03:50,559 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:03:50,559 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-13 23:03:50,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:50 BoogieIcfgContainer [2019-10-13 23:03:50,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:03:50,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:03:50,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:03:50,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:03:50,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:43" (1/3) ... [2019-10-13 23:03:50,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b64fcbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:50, skipping insertion in model container [2019-10-13 23:03:50,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:44" (2/3) ... [2019-10-13 23:03:50,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b64fcbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:50, skipping insertion in model container [2019-10-13 23:03:50,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:50" (3/3) ... [2019-10-13 23:03:50,570 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2019-10-13 23:03:50,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:03:50,591 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:03:50,602 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:03:50,634 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:03:50,634 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:03:50,634 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:03:50,634 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:03:50,634 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:03:50,635 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:03:50,635 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:03:50,635 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:03:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states. [2019-10-13 23:03:50,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-10-13 23:03:50,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:50,690 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:03:50,693 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:50,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:50,699 INFO L82 PathProgramCache]: Analyzing trace with hash 805408432, now seen corresponding path program 1 times [2019-10-13 23:03:50,709 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:50,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764877010] [2019-10-13 23:03:50,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:50,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:51,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764877010] [2019-10-13 23:03:51,320 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:51,320 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:03:51,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947395163] [2019-10-13 23:03:51,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:03:51,327 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:51,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:03:51,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:03:51,344 INFO L87 Difference]: Start difference. First operand 569 states. Second operand 2 states. [2019-10-13 23:03:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:51,412 INFO L93 Difference]: Finished difference Result 472 states and 703 transitions. [2019-10-13 23:03:51,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:03:51,414 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 112 [2019-10-13 23:03:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:51,449 INFO L225 Difference]: With dead ends: 472 [2019-10-13 23:03:51,449 INFO L226 Difference]: Without dead ends: 438 [2019-10-13 23:03:51,454 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 [2019-10-13 23:03:51,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2019-10-13 23:03:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2019-10-13 23:03:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2019-10-13 23:03:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 652 transitions. [2019-10-13 23:03:51,612 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 652 transitions. Word has length 112 [2019-10-13 23:03:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:51,616 INFO L462 AbstractCegarLoop]: Abstraction has 438 states and 652 transitions. [2019-10-13 23:03:51,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:03:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 652 transitions. [2019-10-13 23:03:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-10-13 23:03:51,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:51,628 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:03:51,628 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:51,630 INFO L82 PathProgramCache]: Analyzing trace with hash -2038950407, now seen corresponding path program 1 times [2019-10-13 23:03:51,630 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:51,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536803427] [2019-10-13 23:03:51,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:51,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:52,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:52,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536803427] [2019-10-13 23:03:52,115 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:52,115 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:03:52,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303750533] [2019-10-13 23:03:52,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:03:52,118 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:52,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:03:52,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:03:52,119 INFO L87 Difference]: Start difference. First operand 438 states and 652 transitions. Second operand 7 states. [2019-10-13 23:03:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:55,952 INFO L93 Difference]: Finished difference Result 1241 states and 1893 transitions. [2019-10-13 23:03:55,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:03:55,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2019-10-13 23:03:55,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:55,962 INFO L225 Difference]: With dead ends: 1241 [2019-10-13 23:03:55,962 INFO L226 Difference]: Without dead ends: 845 [2019-10-13 23:03:55,969 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 23:03:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2019-10-13 23:03:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 820. [2019-10-13 23:03:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2019-10-13 23:03:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1247 transitions. [2019-10-13 23:03:56,048 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1247 transitions. Word has length 113 [2019-10-13 23:03:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:56,049 INFO L462 AbstractCegarLoop]: Abstraction has 820 states and 1247 transitions. [2019-10-13 23:03:56,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:03:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1247 transitions. [2019-10-13 23:03:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-13 23:03:56,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:56,054 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:56,054 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1250569818, now seen corresponding path program 1 times [2019-10-13 23:03:56,055 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:56,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671081426] [2019-10-13 23:03:56,055 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:56,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:56,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:56,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671081426] [2019-10-13 23:03:56,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:56,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:56,237 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658680593] [2019-10-13 23:03:56,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:56,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:56,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:56,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:56,238 INFO L87 Difference]: Start difference. First operand 820 states and 1247 transitions. Second operand 4 states. [2019-10-13 23:03:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:03:57,982 INFO L93 Difference]: Finished difference Result 2444 states and 3814 transitions. [2019-10-13 23:03:57,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:03:57,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2019-10-13 23:03:57,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:03:58,058 INFO L225 Difference]: With dead ends: 2444 [2019-10-13 23:03:58,058 INFO L226 Difference]: Without dead ends: 1666 [2019-10-13 23:03:58,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:03:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2019-10-13 23:03:58,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1568. [2019-10-13 23:03:58,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2019-10-13 23:03:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2433 transitions. [2019-10-13 23:03:58,176 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2433 transitions. Word has length 117 [2019-10-13 23:03:58,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:03:58,177 INFO L462 AbstractCegarLoop]: Abstraction has 1568 states and 2433 transitions. [2019-10-13 23:03:58,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:03:58,177 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2433 transitions. [2019-10-13 23:03:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:03:58,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:03:58,181 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:03:58,182 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:03:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:03:58,182 INFO L82 PathProgramCache]: Analyzing trace with hash -114542382, now seen corresponding path program 1 times [2019-10-13 23:03:58,182 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:03:58,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664863087] [2019-10-13 23:03:58,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:58,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:03:58,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:03:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:03:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:03:58,351 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664863087] [2019-10-13 23:03:58,352 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:03:58,352 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:03:58,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516434623] [2019-10-13 23:03:58,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:03:58,353 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:03:58,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:03:58,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:03:58,354 INFO L87 Difference]: Start difference. First operand 1568 states and 2433 transitions. Second operand 4 states. [2019-10-13 23:04:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:00,330 INFO L93 Difference]: Finished difference Result 4635 states and 7354 transitions. [2019-10-13 23:04:00,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:00,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2019-10-13 23:04:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:00,357 INFO L225 Difference]: With dead ends: 4635 [2019-10-13 23:04:00,357 INFO L226 Difference]: Without dead ends: 3110 [2019-10-13 23:04:00,366 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2019-10-13 23:04:00,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2989. [2019-10-13 23:04:00,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2989 states. [2019-10-13 23:04:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4706 transitions. [2019-10-13 23:04:00,546 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4706 transitions. Word has length 118 [2019-10-13 23:04:00,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:00,547 INFO L462 AbstractCegarLoop]: Abstraction has 2989 states and 4706 transitions. [2019-10-13 23:04:00,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:00,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4706 transitions. [2019-10-13 23:04:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:04:00,552 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:00,552 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:04:00,552 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:00,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:00,553 INFO L82 PathProgramCache]: Analyzing trace with hash 742573672, now seen corresponding path program 1 times [2019-10-13 23:04:00,553 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:00,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225690107] [2019-10-13 23:04:00,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:00,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:00,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:00,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225690107] [2019-10-13 23:04:00,716 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:00,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:00,717 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221898050] [2019-10-13 23:04:00,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:00,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:00,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:00,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:00,718 INFO L87 Difference]: Start difference. First operand 2989 states and 4706 transitions. Second operand 4 states. [2019-10-13 23:04:02,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:02,766 INFO L93 Difference]: Finished difference Result 8950 states and 14510 transitions. [2019-10-13 23:04:02,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:02,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2019-10-13 23:04:02,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:02,824 INFO L225 Difference]: With dead ends: 8950 [2019-10-13 23:04:02,824 INFO L226 Difference]: Without dead ends: 6006 [2019-10-13 23:04:02,844 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:02,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6006 states. [2019-10-13 23:04:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6006 to 5840. [2019-10-13 23:04:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5840 states. [2019-10-13 23:04:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5840 states to 5840 states and 9368 transitions. [2019-10-13 23:04:03,250 INFO L78 Accepts]: Start accepts. Automaton has 5840 states and 9368 transitions. Word has length 119 [2019-10-13 23:04:03,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:03,251 INFO L462 AbstractCegarLoop]: Abstraction has 5840 states and 9368 transitions. [2019-10-13 23:04:03,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 5840 states and 9368 transitions. [2019-10-13 23:04:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-13 23:04:03,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:03,257 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:03,260 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1543371476, now seen corresponding path program 1 times [2019-10-13 23:04:03,261 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:03,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975978222] [2019-10-13 23:04:03,261 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:03,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:03,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975978222] [2019-10-13 23:04:03,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:03,489 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:03,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172598209] [2019-10-13 23:04:03,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:03,491 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:03,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:03,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:03,492 INFO L87 Difference]: Start difference. First operand 5840 states and 9368 transitions. Second operand 4 states. [2019-10-13 23:04:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:05,795 INFO L93 Difference]: Finished difference Result 17605 states and 29553 transitions. [2019-10-13 23:04:05,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:05,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2019-10-13 23:04:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:05,940 INFO L225 Difference]: With dead ends: 17605 [2019-10-13 23:04:05,941 INFO L226 Difference]: Without dead ends: 11814 [2019-10-13 23:04:05,987 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11814 states. [2019-10-13 23:04:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11814 to 11559. [2019-10-13 23:04:06,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11559 states. [2019-10-13 23:04:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 19102 transitions. [2019-10-13 23:04:06,731 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 19102 transitions. Word has length 120 [2019-10-13 23:04:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:06,731 INFO L462 AbstractCegarLoop]: Abstraction has 11559 states and 19102 transitions. [2019-10-13 23:04:06,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 19102 transitions. [2019-10-13 23:04:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:04:06,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:06,735 INFO L380 BasicCegarLoop]: trace histogram [3, 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] [2019-10-13 23:04:06,736 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:06,736 INFO L82 PathProgramCache]: Analyzing trace with hash 598303530, now seen corresponding path program 1 times [2019-10-13 23:04:06,736 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:06,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221634750] [2019-10-13 23:04:06,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:06,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:06,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-13 23:04:06,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221634750] [2019-10-13 23:04:06,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:06,904 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 23:04:06,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506723099] [2019-10-13 23:04:06,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 23:04:06,905 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:06,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 23:04:06,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 23:04:06,905 INFO L87 Difference]: Start difference. First operand 11559 states and 19102 transitions. Second operand 4 states. [2019-10-13 23:04:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:04:10,475 INFO L93 Difference]: Finished difference Result 34992 states and 62281 transitions. [2019-10-13 23:04:10,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:04:10,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2019-10-13 23:04:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:04:10,614 INFO L225 Difference]: With dead ends: 34992 [2019-10-13 23:04:10,614 INFO L226 Difference]: Without dead ends: 23478 [2019-10-13 23:04:10,679 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23478 states. [2019-10-13 23:04:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23478 to 22896. [2019-10-13 23:04:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22896 states. [2019-10-13 23:04:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22896 states to 22896 states and 39473 transitions. [2019-10-13 23:04:12,251 INFO L78 Accepts]: Start accepts. Automaton has 22896 states and 39473 transitions. Word has length 121 [2019-10-13 23:04:12,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:04:12,254 INFO L462 AbstractCegarLoop]: Abstraction has 22896 states and 39473 transitions. [2019-10-13 23:04:12,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 23:04:12,254 INFO L276 IsEmpty]: Start isEmpty. Operand 22896 states and 39473 transitions. [2019-10-13 23:04:12,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 23:04:12,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:04:12,262 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:04:12,262 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:04:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:04:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1065571735, now seen corresponding path program 1 times [2019-10-13 23:04:12,263 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:04:12,263 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124567367] [2019-10-13 23:04:12,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:12,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:04:12,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:04:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:04:12,460 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 23:04:12,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124567367] [2019-10-13 23:04:12,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:04:12,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:04:12,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176867938] [2019-10-13 23:04:12,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:04:12,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:04:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:04:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:04:12,465 INFO L87 Difference]: Start difference. First operand 22896 states and 39473 transitions. Second operand 5 states.