/usr/bin/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_spec14_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:07:30,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:07:30,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:07:30,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:07:30,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:07:30,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:07:30,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:07:30,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:07:30,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:07:30,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:07:30,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:07:30,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:07:30,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:07:30,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:07:30,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:07:30,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:07:30,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:07:30,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:07:30,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:07:30,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:07:30,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:07:30,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:07:30,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:07:30,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:07:30,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:07:30,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:07:30,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:07:30,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:07:30,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:07:30,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:07:30,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:07:30,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:07:30,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:07:30,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:07:30,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:07:30,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:07:30,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:07:30,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:07:30,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:07:30,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:07:30,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:07:30,791 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 [2019-11-07 04:07:30,804 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:07:30,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:07:30,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:07:30,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:07:30,807 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:07:30,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:07:30,810 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:07:30,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:07:30,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:07:30,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:07:30,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:07:30,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:07:30,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:07:30,812 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:07:30,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:07:30,812 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:07:30,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:07:30,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:07:30,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:07:30,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:07:30,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:07:30,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:07:30,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:07:30,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:07:30,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:07:30,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:07:30,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:07:30,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:07:30,815 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 [2019-11-07 04:07:31,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:07:31,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:07:31,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:07:31,123 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:07:31,123 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:07:31,124 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product11.cil.c [2019-11-07 04:07:31,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0a551c6/0fdbb510215f4ed6996111857c8bfb79/FLAGcae78a5b7 [2019-11-07 04:07:31,828 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:07:31,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product11.cil.c [2019-11-07 04:07:31,852 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0a551c6/0fdbb510215f4ed6996111857c8bfb79/FLAGcae78a5b7 [2019-11-07 04:07:32,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a0a551c6/0fdbb510215f4ed6996111857c8bfb79 [2019-11-07 04:07:32,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:07:32,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:07:32,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:07:32,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:07:32,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:07:32,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:32" (1/1) ... [2019-11-07 04:07:32,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1cb841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:32, skipping insertion in model container [2019-11-07 04:07:32,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:07:32" (1/1) ... [2019-11-07 04:07:32,048 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:07:32,135 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:07:32,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:07:32,867 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:07:33,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:07:33,139 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:07:33,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33 WrapperNode [2019-11-07 04:07:33,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:07:33,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:07:33,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:07:33,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:07:33,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (1/1) ... [2019-11-07 04:07:33,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (1/1) ... [2019-11-07 04:07:33,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (1/1) ... [2019-11-07 04:07:33,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (1/1) ... [2019-11-07 04:07:33,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (1/1) ... [2019-11-07 04:07:33,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (1/1) ... [2019-11-07 04:07:33,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (1/1) ... [2019-11-07 04:07:33,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:07:33,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:07:33,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:07:33,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:07:33,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (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 [2019-11-07 04:07:33,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:07:33,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:07:33,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:07:33,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:07:33,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:07:33,394 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:07:33,394 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:07:33,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-11-07 04:07:33,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-11-07 04:07:33,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:07:33,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-11-07 04:07:33,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-11-07 04:07:33,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-11-07 04:07:33,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification14_spec__1 [2019-11-07 04:07:33,396 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-11-07 04:07:33,396 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-11-07 04:07:33,397 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-11-07 04:07:33,397 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-11-07 04:07:33,397 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-11-07 04:07:33,397 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-11-07 04:07:33,398 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-11-07 04:07:33,398 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-11-07 04:07:33,398 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-11-07 04:07:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-11-07 04:07:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-11-07 04:07:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-11-07 04:07:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-11-07 04:07:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-11-07 04:07:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:07:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-11-07 04:07:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:07:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:07:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:07:33,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:07:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:07:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:07:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:07:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-11-07 04:07:33,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-11-07 04:07:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-11-07 04:07:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-11-07 04:07:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-11-07 04:07:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-11-07 04:07:33,402 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-11-07 04:07:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-11-07 04:07:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-11-07 04:07:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-11-07 04:07:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-11-07 04:07:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-11-07 04:07:33,403 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-11-07 04:07:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-11-07 04:07:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-11-07 04:07:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-11-07 04:07:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-11-07 04:07:33,404 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-11-07 04:07:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-11-07 04:07:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-11-07 04:07:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-11-07 04:07:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-11-07 04:07:33,405 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-11-07 04:07:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:07:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-11-07 04:07:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-11-07 04:07:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-11-07 04:07:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:07:33,406 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-11-07 04:07:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-11-07 04:07:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-11-07 04:07:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-11-07 04:07:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-11-07 04:07:33,407 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-11-07 04:07:33,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-11-07 04:07:33,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-11-07 04:07:33,408 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:07:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:07:33,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:07:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:07:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:07:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:07:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:07:33,409 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-11-07 04:07:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-11-07 04:07:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-11-07 04:07:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-11-07 04:07:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-11-07 04:07:33,410 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-11-07 04:07:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-11-07 04:07:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-11-07 04:07:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-11-07 04:07:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:07:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-11-07 04:07:33,411 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-11-07 04:07:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-11-07 04:07:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-11-07 04:07:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-11-07 04:07:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-11-07 04:07:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification14_spec__1 [2019-11-07 04:07:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 04:07:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-11-07 04:07:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-11-07 04:07:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-11-07 04:07:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-11-07 04:07:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-11-07 04:07:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-11-07 04:07:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-11-07 04:07:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-11-07 04:07:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-11-07 04:07:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-11-07 04:07:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-11-07 04:07:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-11-07 04:07:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-11-07 04:07:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-11-07 04:07:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-11-07 04:07:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:07:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:07:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-11-07 04:07:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:07:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:07:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:07:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:07:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:07:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:07:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:07:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:07:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:07:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:07:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:07:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:07:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:07:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:07:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:07:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:07:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:07:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:07:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-11-07 04:07:33,419 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-11-07 04:07:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-11-07 04:07:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-11-07 04:07:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-11-07 04:07:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-11-07 04:07:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-11-07 04:07:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:07:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-11-07 04:07:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-11-07 04:07:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-11-07 04:07:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-11-07 04:07:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-11-07 04:07:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-11-07 04:07:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-11-07 04:07:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-11-07 04:07:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-11-07 04:07:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-11-07 04:07:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-11-07 04:07:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-11-07 04:07:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-11-07 04:07:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-11-07 04:07:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-11-07 04:07:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-11-07 04:07:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-11-07 04:07:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-11-07 04:07:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:07:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:07:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:07:38,195 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:07:38,195 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-07 04:07:38,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:38 BoogieIcfgContainer [2019-11-07 04:07:38,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:07:38,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:07:38,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:07:38,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:07:38,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:07:32" (1/3) ... [2019-11-07 04:07:38,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6cba6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:38, skipping insertion in model container [2019-11-07 04:07:38,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:33" (2/3) ... [2019-11-07 04:07:38,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6cba6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:07:38, skipping insertion in model container [2019-11-07 04:07:38,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:07:38" (3/3) ... [2019-11-07 04:07:38,205 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product11.cil.c [2019-11-07 04:07:38,215 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:07:38,224 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:07:38,236 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:07:38,267 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:07:38,267 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:07:38,268 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:07:38,268 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:07:38,268 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:07:38,268 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:07:38,268 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:07:38,268 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:07:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states. [2019-11-07 04:07:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-07 04:07:38,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:38,339 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:38,344 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:38,350 INFO L82 PathProgramCache]: Analyzing trace with hash 546404040, now seen corresponding path program 1 times [2019-11-07 04:07:38,360 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:38,360 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220108931] [2019-11-07 04:07:38,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:07:39,078 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220108931] [2019-11-07 04:07:39,078 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:39,079 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:07:39,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174809720] [2019-11-07 04:07:39,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:07:39,088 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:39,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:07:39,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:07:39,104 INFO L87 Difference]: Start difference. First operand 535 states. Second operand 5 states. [2019-11-07 04:07:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:40,144 INFO L93 Difference]: Finished difference Result 1207 states and 1831 transitions. [2019-11-07 04:07:40,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:07:40,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2019-11-07 04:07:40,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:40,190 INFO L225 Difference]: With dead ends: 1207 [2019-11-07 04:07:40,190 INFO L226 Difference]: Without dead ends: 794 [2019-11-07 04:07:40,198 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:07:40,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2019-11-07 04:07:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 787. [2019-11-07 04:07:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-11-07 04:07:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1184 transitions. [2019-11-07 04:07:40,356 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1184 transitions. Word has length 110 [2019-11-07 04:07:40,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:40,357 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1184 transitions. [2019-11-07 04:07:40,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:07:40,357 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1184 transitions. [2019-11-07 04:07:40,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-07 04:07:40,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:40,364 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:40,364 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:40,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:40,365 INFO L82 PathProgramCache]: Analyzing trace with hash 330514878, now seen corresponding path program 1 times [2019-11-07 04:07:40,365 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:40,365 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914444423] [2019-11-07 04:07:40,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 04:07:40,625 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914444423] [2019-11-07 04:07:40,625 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:40,625 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 04:07:40,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128502172] [2019-11-07 04:07:40,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 04:07:40,634 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:40,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 04:07:40,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:40,638 INFO L87 Difference]: Start difference. First operand 787 states and 1184 transitions. Second operand 7 states. [2019-11-07 04:07:41,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:41,842 INFO L93 Difference]: Finished difference Result 919 states and 1346 transitions. [2019-11-07 04:07:41,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 04:07:41,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2019-11-07 04:07:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:41,851 INFO L225 Difference]: With dead ends: 919 [2019-11-07 04:07:41,852 INFO L226 Difference]: Without dead ends: 916 [2019-11-07 04:07:41,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-11-07 04:07:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2019-11-07 04:07:41,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 908. [2019-11-07 04:07:41,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 908 states. [2019-11-07 04:07:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1334 transitions. [2019-11-07 04:07:41,911 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1334 transitions. Word has length 114 [2019-11-07 04:07:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:41,912 INFO L462 AbstractCegarLoop]: Abstraction has 908 states and 1334 transitions. [2019-11-07 04:07:41,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 04:07:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1334 transitions. [2019-11-07 04:07:41,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-07 04:07:41,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:41,919 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:41,920 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:41,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:41,920 INFO L82 PathProgramCache]: Analyzing trace with hash -685253192, now seen corresponding path program 1 times [2019-11-07 04:07:41,920 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:41,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145632175] [2019-11-07 04:07:41,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-11-07 04:07:42,139 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145632175] [2019-11-07 04:07:42,140 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:07:42,140 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:07:42,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120658817] [2019-11-07 04:07:42,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:07:42,143 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:42,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:07:42,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:07:42,144 INFO L87 Difference]: Start difference. First operand 908 states and 1334 transitions. Second operand 5 states. [2019-11-07 04:07:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:42,227 INFO L93 Difference]: Finished difference Result 1795 states and 2655 transitions. [2019-11-07 04:07:42,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:42,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-11-07 04:07:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:42,239 INFO L225 Difference]: With dead ends: 1795 [2019-11-07 04:07:42,240 INFO L226 Difference]: Without dead ends: 918 [2019-11-07 04:07:42,249 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:07:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2019-11-07 04:07:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 918. [2019-11-07 04:07:42,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2019-11-07 04:07:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1344 transitions. [2019-11-07 04:07:42,337 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1344 transitions. Word has length 150 [2019-11-07 04:07:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:42,338 INFO L462 AbstractCegarLoop]: Abstraction has 918 states and 1344 transitions. [2019-11-07 04:07:42,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:07:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1344 transitions. [2019-11-07 04:07:42,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 04:07:42,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:42,352 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:42,353 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:42,354 INFO L82 PathProgramCache]: Analyzing trace with hash -59087556, now seen corresponding path program 1 times [2019-11-07 04:07:42,354 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:42,355 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606151020] [2019-11-07 04:07:42,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:07:42,690 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606151020] [2019-11-07 04:07:42,690 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208858793] [2019-11-07 04:07:42,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:43,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:07:43,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 04:07:43,313 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:07:43,513 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:43,513 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 4] total 10 [2019-11-07 04:07:43,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129199972] [2019-11-07 04:07:43,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:43,515 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:43,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:43,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:07:43,516 INFO L87 Difference]: Start difference. First operand 918 states and 1344 transitions. Second operand 4 states. [2019-11-07 04:07:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:43,848 INFO L93 Difference]: Finished difference Result 1883 states and 2821 transitions. [2019-11-07 04:07:43,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:43,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2019-11-07 04:07:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:43,856 INFO L225 Difference]: With dead ends: 1883 [2019-11-07 04:07:43,856 INFO L226 Difference]: Without dead ends: 996 [2019-11-07 04:07:43,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 309 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:07:43,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-11-07 04:07:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 996. [2019-11-07 04:07:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2019-11-07 04:07:43,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1490 transitions. [2019-11-07 04:07:43,917 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1490 transitions. Word has length 155 [2019-11-07 04:07:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:43,917 INFO L462 AbstractCegarLoop]: Abstraction has 996 states and 1490 transitions. [2019-11-07 04:07:43,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:43,918 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1490 transitions. [2019-11-07 04:07:43,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-11-07 04:07:43,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:43,923 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:44,133 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:44,133 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:44,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2056920944, now seen corresponding path program 1 times [2019-11-07 04:07:44,134 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:44,135 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723836241] [2019-11-07 04:07:44,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-07 04:07:44,390 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723836241] [2019-11-07 04:07:44,390 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246591903] [2019-11-07 04:07:44,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:44,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 2882 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:07:44,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 04:07:45,082 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-07 04:07:45,286 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:45,286 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-11-07 04:07:45,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331993857] [2019-11-07 04:07:45,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:45,287 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:45,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:45,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:45,288 INFO L87 Difference]: Start difference. First operand 996 states and 1490 transitions. Second operand 4 states. [2019-11-07 04:07:45,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:45,526 INFO L93 Difference]: Finished difference Result 2039 states and 3111 transitions. [2019-11-07 04:07:45,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:45,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2019-11-07 04:07:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:45,536 INFO L225 Difference]: With dead ends: 2039 [2019-11-07 04:07:45,536 INFO L226 Difference]: Without dead ends: 1074 [2019-11-07 04:07:45,541 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:07:45,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2019-11-07 04:07:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2019-11-07 04:07:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2019-11-07 04:07:45,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1636 transitions. [2019-11-07 04:07:45,592 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1636 transitions. Word has length 160 [2019-11-07 04:07:45,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:45,593 INFO L462 AbstractCegarLoop]: Abstraction has 1074 states and 1636 transitions. [2019-11-07 04:07:45,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:45,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1636 transitions. [2019-11-07 04:07:45,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 04:07:45,598 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:45,598 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:45,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:45,807 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:45,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:45,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1390275776, now seen corresponding path program 1 times [2019-11-07 04:07:45,808 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:45,808 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812157378] [2019-11-07 04:07:45,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-11-07 04:07:45,978 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812157378] [2019-11-07 04:07:45,978 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926195817] [2019-11-07 04:07:45,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:46,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 2886 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:07:46,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:46,615 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 04:07:46,616 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2019-11-07 04:07:46,777 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:46,777 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-11-07 04:07:46,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121572726] [2019-11-07 04:07:46,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:46,779 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:46,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:46,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:46,780 INFO L87 Difference]: Start difference. First operand 1074 states and 1636 transitions. Second operand 4 states. [2019-11-07 04:07:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:47,002 INFO L93 Difference]: Finished difference Result 2195 states and 3401 transitions. [2019-11-07 04:07:47,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:47,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2019-11-07 04:07:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:47,011 INFO L225 Difference]: With dead ends: 2195 [2019-11-07 04:07:47,011 INFO L226 Difference]: Without dead ends: 1152 [2019-11-07 04:07:47,016 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:07:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2019-11-07 04:07:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1152. [2019-11-07 04:07:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2019-11-07 04:07:47,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1782 transitions. [2019-11-07 04:07:47,068 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1782 transitions. Word has length 164 [2019-11-07 04:07:47,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:47,070 INFO L462 AbstractCegarLoop]: Abstraction has 1152 states and 1782 transitions. [2019-11-07 04:07:47,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:47,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1782 transitions. [2019-11-07 04:07:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 04:07:47,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:47,076 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:47,283 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:47,283 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:47,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:47,284 INFO L82 PathProgramCache]: Analyzing trace with hash -589313700, now seen corresponding path program 1 times [2019-11-07 04:07:47,285 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:47,285 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734257476] [2019-11-07 04:07:47,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 04:07:47,490 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734257476] [2019-11-07 04:07:47,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33238575] [2019-11-07 04:07:47,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:48,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 2889 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:07:48,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 04:07:48,192 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-11-07 04:07:48,364 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 04:07:48,365 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2019-11-07 04:07:48,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473911942] [2019-11-07 04:07:48,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:07:48,367 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:07:48,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:07:48,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:07:48,368 INFO L87 Difference]: Start difference. First operand 1152 states and 1782 transitions. Second operand 4 states. [2019-11-07 04:07:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:07:48,577 INFO L93 Difference]: Finished difference Result 2351 states and 3691 transitions. [2019-11-07 04:07:48,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 04:07:48,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2019-11-07 04:07:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:07:48,589 INFO L225 Difference]: With dead ends: 2351 [2019-11-07 04:07:48,589 INFO L226 Difference]: Without dead ends: 1230 [2019-11-07 04:07:48,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 331 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:07:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2019-11-07 04:07:48,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2019-11-07 04:07:48,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2019-11-07 04:07:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1928 transitions. [2019-11-07 04:07:48,671 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1928 transitions. Word has length 167 [2019-11-07 04:07:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:07:48,672 INFO L462 AbstractCegarLoop]: Abstraction has 1230 states and 1928 transitions. [2019-11-07 04:07:48,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:07:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1928 transitions. [2019-11-07 04:07:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-11-07 04:07:48,677 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:07:48,678 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:07:48,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:48,889 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:07:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:07:48,890 INFO L82 PathProgramCache]: Analyzing trace with hash 688319882, now seen corresponding path program 1 times [2019-11-07 04:07:48,890 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:07:48,891 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250367355] [2019-11-07 04:07:48,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:07:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:07:49,072 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250367355] [2019-11-07 04:07:49,072 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070451] [2019-11-07 04:07:49,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:07:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:07:49,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-07 04:07:49,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:07:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-07 04:07:49,817 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:07:50,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:07:50,036 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:07:50,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:07:50,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:07:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2019-11-07 04:07:50,177 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [470349114] [2019-11-07 04:07:50,225 INFO L159 IcfgInterpreter]: Started Sifa with 131 locations of interest [2019-11-07 04:07:50,225 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:07:50,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:07:50,240 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:07:50,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs