/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:39:16,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:39:16,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:39:16,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:39:16,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:39:16,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:39:16,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:39:16,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:39:16,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:39:16,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:39:16,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:39:16,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:39:16,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:39:16,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:39:16,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:39:16,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:39:16,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:39:16,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:39:16,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:39:16,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:39:16,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:39:16,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:39:16,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:39:16,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:39:16,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 11:39:16,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 11:39:16,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 11:39:16,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 11:39:16,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 11:39:16,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 11:39:16,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:39:16,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:39:16,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:39:16,077 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:39:16,078 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:39:16,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:39:16,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:39:16,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:39:16,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:39:16,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:39:16,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:39:16,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 11:39:16,105 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:39:16,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:39:16,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:39:16,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:39:16,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:39:16,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:39:16,106 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:39:16,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:39:16,106 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:39:16,106 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:39:16,107 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:39:16,107 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:39:16,107 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:39:16,107 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:39:16,107 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:39:16,107 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:39:16,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:39:16,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:39:16,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:39:16,109 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:39:16,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:39:16,109 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:39:16,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:39:16,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:39:16,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:39:16,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:39:16,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:39:16,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:39:16,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:39:16,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:39:16,279 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:39:16,280 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:39:16,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2023-04-01 11:39:17,171 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:39:17,426 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:39:17,427 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c [2023-04-01 11:39:17,442 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccbfce8f/b21493bbcda44f09aa7b136216e0bf34/FLAGc52f65150 [2023-04-01 11:39:17,453 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ccbfce8f/b21493bbcda44f09aa7b136216e0bf34 [2023-04-01 11:39:17,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:39:17,455 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:39:17,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:39:17,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:39:17,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:39:17,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:17,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6905cbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17, skipping insertion in model container [2023-04-01 11:39:17,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:17,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:39:17,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:39:17,785 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2023-04-01 11:39:17,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:39:17,834 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:39:17,924 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product20.cil.c[45414,45427] [2023-04-01 11:39:17,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:39:17,995 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:39:17,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17 WrapperNode [2023-04-01 11:39:17,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:39:18,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:39:18,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:39:18,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:39:18,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:39:18,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:39:18,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:39:18,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:39:18,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (1/1) ... [2023-04-01 11:39:18,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:39:18,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:39:18,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 11:39:18,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 11:39:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:39:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:39:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-01 11:39:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:39:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-01 11:39:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-01 11:39:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-04-01 11:39:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-01 11:39:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-01 11:39:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-01 11:39:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-01 11:39:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-01 11:39:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-01 11:39:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-01 11:39:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-01 11:39:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-01 11:39:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-01 11:39:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-01 11:39:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-01 11:39:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-01 11:39:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-01 11:39:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-01 11:39:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-01 11:39:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-01 11:39:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-01 11:39:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-01 11:39:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-01 11:39:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-01 11:39:18,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 11:39:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:39:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:39:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:39:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 11:39:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-01 11:39:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-01 11:39:18,222 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-01 11:39:18,223 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2023-04-01 11:39:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-01 11:39:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-04-01 11:39:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-01 11:39:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-01 11:39:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-01 11:39:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-01 11:39:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-01 11:39:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-01 11:39:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:39:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:39:18,396 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:39:18,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:39:19,393 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:39:20,003 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:39:20,003 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-01 11:39:20,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:20 BoogieIcfgContainer [2023-04-01 11:39:20,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:39:20,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:39:20,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:39:20,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:39:20,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:39:17" (1/3) ... [2023-04-01 11:39:20,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3644974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:20, skipping insertion in model container [2023-04-01 11:39:20,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:39:17" (2/3) ... [2023-04-01 11:39:20,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3644974d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:39:20, skipping insertion in model container [2023-04-01 11:39:20,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:39:20" (3/3) ... [2023-04-01 11:39:20,017 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product20.cil.c [2023-04-01 11:39:20,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:39:20,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:39:20,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:39:20,097 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5fda2336, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:39:20,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:39:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 585 states, 341 states have (on average 1.4838709677419355) internal successors, (506), 370 states have internal predecessors, (506), 179 states have call successors, (179), 52 states have call predecessors, (179), 52 states have return successors, (179), 169 states have call predecessors, (179), 179 states have call successors, (179) [2023-04-01 11:39:20,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-01 11:39:20,115 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:39:20,116 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-01 11:39:20,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:39:20,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:39:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 358869491, now seen corresponding path program 1 times [2023-04-01 11:39:20,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:39:20,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217955729] [2023-04-01 11:39:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:20,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:39:20,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-04-01 11:39:21,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:39:21,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217955729] [2023-04-01 11:39:21,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217955729] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:39:21,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:39:21,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 11:39:21,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388041913] [2023-04-01 11:39:21,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:39:21,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 11:39:21,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:39:21,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 11:39:21,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 11:39:21,250 INFO L87 Difference]: Start difference. First operand has 585 states, 341 states have (on average 1.4838709677419355) internal successors, (506), 370 states have internal predecessors, (506), 179 states have call successors, (179), 52 states have call predecessors, (179), 52 states have return successors, (179), 169 states have call predecessors, (179), 179 states have call successors, (179) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-01 11:39:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:39:23,029 INFO L93 Difference]: Finished difference Result 1390 states and 2150 transitions. [2023-04-01 11:39:23,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-01 11:39:23,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) Word has length 97 [2023-04-01 11:39:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:39:23,050 INFO L225 Difference]: With dead ends: 1390 [2023-04-01 11:39:23,050 INFO L226 Difference]: Without dead ends: 964 [2023-04-01 11:39:23,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-04-01 11:39:23,058 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 2171 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-04-01 11:39:23,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2252 Valid, 466 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-04-01 11:39:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2023-04-01 11:39:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 875. [2023-04-01 11:39:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 578 states have (on average 1.5570934256055364) internal successors, (900), 608 states have internal predecessors, (900), 222 states have call successors, (222), 75 states have call predecessors, (222), 74 states have return successors, (224), 201 states have call predecessors, (224), 214 states have call successors, (224) [2023-04-01 11:39:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1346 transitions. [2023-04-01 11:39:23,166 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1346 transitions. Word has length 97 [2023-04-01 11:39:23,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:39:23,167 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1346 transitions. [2023-04-01 11:39:23,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 6 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (20), 6 states have call predecessors, (20), 5 states have call successors, (20) [2023-04-01 11:39:23,167 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1346 transitions. [2023-04-01 11:39:23,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-04-01 11:39:23,175 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:39:23,175 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2023-04-01 11:39:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 11:39:23,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:39:23,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:39:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1691027211, now seen corresponding path program 1 times [2023-04-01 11:39:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:39:23,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036836490] [2023-04-01 11:39:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:23,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:39:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 11:39:23,693 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:39:23,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036836490] [2023-04-01 11:39:23,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036836490] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:39:23,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:39:23,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-01 11:39:23,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424540171] [2023-04-01 11:39:23,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:39:23,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 11:39:23,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:39:23,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 11:39:23,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-01 11:39:23,696 INFO L87 Difference]: Start difference. First operand 875 states and 1346 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-01 11:39:25,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:39:25,344 INFO L93 Difference]: Finished difference Result 2547 states and 3986 transitions. [2023-04-01 11:39:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 11:39:25,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 146 [2023-04-01 11:39:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:39:25,363 INFO L225 Difference]: With dead ends: 2547 [2023-04-01 11:39:25,364 INFO L226 Difference]: Without dead ends: 1726 [2023-04-01 11:39:25,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-01 11:39:25,368 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 1236 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 3371 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 3840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 3371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 11:39:25,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 561 Invalid, 3840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 3371 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 11:39:25,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-04-01 11:39:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1689. [2023-04-01 11:39:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1131 states have (on average 1.565870910698497) internal successors, (1771), 1187 states have internal predecessors, (1771), 417 states have call successors, (417), 134 states have call predecessors, (417), 140 states have return successors, (447), 387 states have call predecessors, (447), 409 states have call successors, (447) [2023-04-01 11:39:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2635 transitions. [2023-04-01 11:39:25,508 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2635 transitions. Word has length 146 [2023-04-01 11:39:25,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:39:25,509 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 2635 transitions. [2023-04-01 11:39:25,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 5 states have call successors, (33), 4 states have call predecessors, (33), 4 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-04-01 11:39:25,509 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2635 transitions. [2023-04-01 11:39:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-04-01 11:39:25,519 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:39:25,519 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2023-04-01 11:39:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 11:39:25,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:39:25,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:39:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1158725766, now seen corresponding path program 1 times [2023-04-01 11:39:25,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:39:25,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109918449] [2023-04-01 11:39:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:25,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:39:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 11:39:25,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:39:25,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109918449] [2023-04-01 11:39:25,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109918449] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:39:25,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:39:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 11:39:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187637169] [2023-04-01 11:39:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:39:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 11:39:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:39:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 11:39:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 11:39:25,839 INFO L87 Difference]: Start difference. First operand 1689 states and 2635 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-01 11:39:26,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:39:26,178 INFO L93 Difference]: Finished difference Result 1739 states and 2712 transitions. [2023-04-01 11:39:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 11:39:26,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) Word has length 150 [2023-04-01 11:39:26,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:39:26,190 INFO L225 Difference]: With dead ends: 1739 [2023-04-01 11:39:26,190 INFO L226 Difference]: Without dead ends: 1722 [2023-04-01 11:39:26,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-04-01 11:39:26,196 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 690 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-01 11:39:26,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1664 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-01 11:39:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2023-04-01 11:39:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1695. [2023-04-01 11:39:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1137 states have (on average 1.5628847845206684) internal successors, (1777), 1193 states have internal predecessors, (1777), 417 states have call successors, (417), 134 states have call predecessors, (417), 140 states have return successors, (447), 387 states have call predecessors, (447), 409 states have call successors, (447) [2023-04-01 11:39:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2641 transitions. [2023-04-01 11:39:26,322 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2641 transitions. Word has length 150 [2023-04-01 11:39:26,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:39:26,323 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 2641 transitions. [2023-04-01 11:39:26,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 4 states have call predecessors, (30), 2 states have call successors, (30) [2023-04-01 11:39:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2641 transitions. [2023-04-01 11:39:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-01 11:39:26,326 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:39:26,326 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2023-04-01 11:39:26,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 11:39:26,326 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:39:26,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:39:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -51545532, now seen corresponding path program 1 times [2023-04-01 11:39:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:39:26,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659105480] [2023-04-01 11:39:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:26,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:39:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 11:39:26,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:39:26,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659105480] [2023-04-01 11:39:26,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659105480] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:39:26,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:39:26,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-01 11:39:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168224240] [2023-04-01 11:39:26,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:39:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 11:39:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:39:26,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 11:39:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-04-01 11:39:26,878 INFO L87 Difference]: Start difference. First operand 1695 states and 2641 transitions. Second operand has 12 states, 9 states have (on average 7.888888888888889) internal successors, (71), 10 states have internal predecessors, (71), 6 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2023-04-01 11:39:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:39:30,466 INFO L93 Difference]: Finished difference Result 4302 states and 6680 transitions. [2023-04-01 11:39:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-01 11:39:30,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.888888888888889) internal successors, (71), 10 states have internal predecessors, (71), 6 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 154 [2023-04-01 11:39:30,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:39:30,479 INFO L225 Difference]: With dead ends: 4302 [2023-04-01 11:39:30,479 INFO L226 Difference]: Without dead ends: 2660 [2023-04-01 11:39:30,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2023-04-01 11:39:30,490 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1254 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 9131 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 9736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 9131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-04-01 11:39:30,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 1302 Invalid, 9736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 9131 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-04-01 11:39:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2023-04-01 11:39:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2611. [2023-04-01 11:39:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 1752 states have (on average 1.5422374429223744) internal successors, (2702), 1826 states have internal predecessors, (2702), 625 states have call successors, (625), 212 states have call predecessors, (625), 233 states have return successors, (689), 602 states have call predecessors, (689), 617 states have call successors, (689) [2023-04-01 11:39:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 4016 transitions. [2023-04-01 11:39:30,639 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 4016 transitions. Word has length 154 [2023-04-01 11:39:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:39:30,641 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 4016 transitions. [2023-04-01 11:39:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.888888888888889) internal successors, (71), 10 states have internal predecessors, (71), 6 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2023-04-01 11:39:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 4016 transitions. [2023-04-01 11:39:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-01 11:39:30,643 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:39:30,644 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2023-04-01 11:39:30,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-01 11:39:30,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:39:30,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:39:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash -45205101, now seen corresponding path program 1 times [2023-04-01 11:39:30,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:39:30,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276593403] [2023-04-01 11:39:30,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:30,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:39:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-01 11:39:31,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:39:31,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276593403] [2023-04-01 11:39:31,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276593403] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:39:31,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:39:31,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-01 11:39:31,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422251211] [2023-04-01 11:39:31,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:39:31,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-01 11:39:31,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:39:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-01 11:39:31,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-01 11:39:31,011 INFO L87 Difference]: Start difference. First operand 2611 states and 4016 transitions. Second operand has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-01 11:39:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:39:31,573 INFO L93 Difference]: Finished difference Result 2782 states and 4248 transitions. [2023-04-01 11:39:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-01 11:39:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) Word has length 155 [2023-04-01 11:39:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:39:31,587 INFO L225 Difference]: With dead ends: 2782 [2023-04-01 11:39:31,587 INFO L226 Difference]: Without dead ends: 2765 [2023-04-01 11:39:31,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-04-01 11:39:31,590 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 674 mSDsluCounter, 3686 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 4320 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-01 11:39:31,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 4320 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-01 11:39:31,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2023-04-01 11:39:31,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2703. [2023-04-01 11:39:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2703 states, 1811 states have (on average 1.5334069574820541) internal successors, (2777), 1885 states have internal predecessors, (2777), 645 states have call successors, (645), 225 states have call predecessors, (645), 246 states have return successors, (718), 622 states have call predecessors, (718), 637 states have call successors, (718) [2023-04-01 11:39:31,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 4140 transitions. [2023-04-01 11:39:31,715 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 4140 transitions. Word has length 155 [2023-04-01 11:39:31,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:39:31,716 INFO L495 AbstractCegarLoop]: Abstraction has 2703 states and 4140 transitions. [2023-04-01 11:39:31,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (31), 5 states have call predecessors, (31), 2 states have call successors, (31) [2023-04-01 11:39:31,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 4140 transitions. [2023-04-01 11:39:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-04-01 11:39:31,718 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:39:31,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:39:31,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-01 11:39:31,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:39:31,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:39:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1778703513, now seen corresponding path program 1 times [2023-04-01 11:39:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:39:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803024993] [2023-04-01 11:39:31,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:31,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:39:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-01 11:39:36,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:39:36,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803024993] [2023-04-01 11:39:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803024993] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:39:36,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026267235] [2023-04-01 11:39:36,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:36,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:39:36,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:39:36,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:39:36,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 11:39:36,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:36,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 21 conjunts are in the unsatisfiable core [2023-04-01 11:39:36,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:39:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-01 11:39:36,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 11:39:36,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026267235] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:39:36,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 11:39:36,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [32] total 37 [2023-04-01 11:39:36,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299836800] [2023-04-01 11:39:36,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:39:36,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 11:39:36,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:39:36,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 11:39:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1221, Unknown=0, NotChecked=0, Total=1332 [2023-04-01 11:39:36,932 INFO L87 Difference]: Start difference. First operand 2703 states and 4140 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-01 11:39:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:39:37,335 INFO L93 Difference]: Finished difference Result 2794 states and 4252 transitions. [2023-04-01 11:39:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 11:39:37,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) Word has length 170 [2023-04-01 11:39:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:39:37,362 INFO L225 Difference]: With dead ends: 2794 [2023-04-01 11:39:37,362 INFO L226 Difference]: Without dead ends: 2777 [2023-04-01 11:39:37,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=1291, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 11:39:37,364 INFO L413 NwaCegarLoop]: 645 mSDtfsCounter, 9 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-01 11:39:37,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3844 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-01 11:39:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2023-04-01 11:39:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2757. [2023-04-01 11:39:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 1847 states have (on average 1.5230102869518138) internal successors, (2813), 1921 states have internal predecessors, (2813), 645 states have call successors, (645), 225 states have call predecessors, (645), 264 states have return successors, (736), 640 states have call predecessors, (736), 637 states have call successors, (736) [2023-04-01 11:39:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4194 transitions. [2023-04-01 11:39:37,509 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4194 transitions. Word has length 170 [2023-04-01 11:39:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:39:37,509 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 4194 transitions. [2023-04-01 11:39:37,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (34), 4 states have call predecessors, (34), 1 states have call successors, (34) [2023-04-01 11:39:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4194 transitions. [2023-04-01 11:39:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-04-01 11:39:37,513 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:39:37,513 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:39:37,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 11:39:37,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-04-01 11:39:37,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:39:37,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:39:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1294886655, now seen corresponding path program 1 times [2023-04-01 11:39:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:39:37,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196897728] [2023-04-01 11:39:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:39:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-01 11:39:39,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:39:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196897728] [2023-04-01 11:39:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196897728] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 11:39:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137194275] [2023-04-01 11:39:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:39:39,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 11:39:39,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:39:39,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 11:39:39,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 11:39:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:39:39,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 49 conjunts are in the unsatisfiable core [2023-04-01 11:39:39,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 11:39:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-01 11:39:40,547 INFO L327 TraceCheckSpWp]: Computing backward predicates...