/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 OctagonDomain -i ../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 23:40:27,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 23:40:27,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 23:40:27,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 23:40:27,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 23:40:27,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 23:40:27,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 23:40:27,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 23:40:27,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 23:40:27,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 23:40:27,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 23:40:27,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 23:40:27,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 23:40:27,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 23:40:27,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 23:40:27,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 23:40:27,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 23:40:27,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 23:40:27,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 23:40:27,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 23:40:27,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 23:40:27,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 23:40:27,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 23:40:27,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 23:40:27,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 23:40:27,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 23:40:27,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 23:40:27,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 23:40:27,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 23:40:27,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 23:40:27,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 23:40:27,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 23:40:27,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 23:40:27,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 23:40:27,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 23:40:27,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 23:40:27,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 23:40:27,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 23:40:27,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 23:40:27,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 23:40:27,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 23:40:27,580 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 [2023-04-02 23:40:27,609 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 23:40:27,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 23:40:27,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 23:40:27,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 23:40:27,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 23:40:27,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 23:40:27,611 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 23:40:27,611 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 23:40:27,611 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 23:40:27,611 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 23:40:27,612 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 23:40:27,612 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 23:40:27,612 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 23:40:27,612 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 23:40:27,613 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 23:40:27,613 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 23:40:27,613 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 23:40:27,613 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 23:40:27,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 23:40:27,614 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 23:40:27,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 23:40:27,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 23:40:27,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 23:40:27,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 23:40:27,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 23:40:27,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 23:40:27,615 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 23:40:27,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 23:40:27,615 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 23:40:27,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 23:40:27,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 23:40:27,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 23:40:27,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:40:27,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 23:40:27,616 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 23:40:27,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 23:40:27,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 23:40:27,617 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 23:40:27,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 23:40:27,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 23:40:27,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 23:40:27,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 23:40:27,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 23:40:27,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 23:40:27,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 23:40:27,859 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 23:40:27,859 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 23:40:27,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2023-04-02 23:40:28,999 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 23:40:29,283 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 23:40:29,283 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product03.cil.c [2023-04-02 23:40:29,314 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b67572ff/f0b930c5b94e4771b6e7541c8ac3c6f8/FLAG8628177ff [2023-04-02 23:40:29,334 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b67572ff/f0b930c5b94e4771b6e7541c8ac3c6f8 [2023-04-02 23:40:29,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 23:40:29,339 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 23:40:29,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 23:40:29,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 23:40:29,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 23:40:29,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:29,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581c6a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29, skipping insertion in model container [2023-04-02 23:40:29,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:29,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 23:40:29,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 23:40:29,775 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_product03.cil.c[49188,49201] [2023-04-02 23:40:29,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:40:29,825 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 23:40:29,887 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_product03.cil.c[49188,49201] [2023-04-02 23:40:29,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 23:40:29,965 INFO L208 MainTranslator]: Completed translation [2023-04-02 23:40:29,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29 WrapperNode [2023-04-02 23:40:29,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 23:40:29,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 23:40:29,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 23:40:29,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 23:40:29,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:29,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 23:40:30,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 23:40:30,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 23:40:30,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 23:40:30,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (1/1) ... [2023-04-02 23:40:30,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 23:40:30,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:40:30,141 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) [2023-04-02 23:40:30,150 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 [2023-04-02 23:40:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 23:40:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 23:40:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2023-04-02 23:40:30,174 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 23:40:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2023-04-02 23:40:30,175 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2023-04-02 23:40:30,176 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-04-02 23:40:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__base [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2023-04-02 23:40:30,178 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-04-02 23:40:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2023-04-02 23:40:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2023-04-02 23:40:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-04-02 23:40:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2023-04-02 23:40:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:40:30,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:40:30,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:40:30,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:40:30,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-04-02 23:40:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2023-04-02 23:40:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-04-02 23:40:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-04-02 23:40:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2023-04-02 23:40:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-04-02 23:40:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-04-02 23:40:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-04-02 23:40:30,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-04-02 23:40:30,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-04-02 23:40:30,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2023-04-02 23:40:30,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2023-04-02 23:40:30,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 23:40:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 23:40:30,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 23:40:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 23:40:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 23:40:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 23:40:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2023-04-02 23:40:30,185 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2023-04-02 23:40:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2023-04-02 23:40:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2023-04-02 23:40:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 23:40:30,186 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2023-04-02 23:40:30,187 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2023-04-02 23:40:30,188 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2023-04-02 23:40:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-04-02 23:40:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-04-02 23:40:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-04-02 23:40:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure test [2023-04-02 23:40:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2023-04-02 23:40:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-04-02 23:40:30,189 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-04-02 23:40:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-04-02 23:40:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-04-02 23:40:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-04-02 23:40:30,190 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-04-02 23:40:30,191 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-04-02 23:40:30,192 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2023-04-02 23:40:30,193 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-04-02 23:40:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2023-04-02 23:40:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2023-04-02 23:40:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-04-02 23:40:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-04-02 23:40:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2023-04-02 23:40:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-04-02 23:40:30,197 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__base [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-04-02 23:40:30,198 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3 [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2 [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4 [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-04-02 23:40:30,199 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 23:40:30,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 23:40:30,470 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 23:40:30,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 23:40:31,698 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 23:40:32,534 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 23:40:32,534 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-04-02 23:40:32,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:40:32 BoogieIcfgContainer [2023-04-02 23:40:32,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 23:40:32,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 23:40:32,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 23:40:32,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 23:40:32,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 11:40:29" (1/3) ... [2023-04-02 23:40:32,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366e8b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:40:32, skipping insertion in model container [2023-04-02 23:40:32,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 11:40:29" (2/3) ... [2023-04-02 23:40:32,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@366e8b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 11:40:32, skipping insertion in model container [2023-04-02 23:40:32,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 11:40:32" (3/3) ... [2023-04-02 23:40:32,544 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product03.cil.c [2023-04-02 23:40:32,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 23:40:32,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 23:40:32,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 23:40:32,639 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;@55c02552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 23:40:32,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 23:40:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 558 states, 328 states have (on average 1.4969512195121952) internal successors, (491), 355 states have internal predecessors, (491), 170 states have call successors, (170), 47 states have call predecessors, (170), 47 states have return successors, (170), 161 states have call predecessors, (170), 170 states have call successors, (170) [2023-04-02 23:40:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 23:40:32,674 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:40:32,676 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] [2023-04-02 23:40:32,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:40:32,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:40:32,681 INFO L85 PathProgramCache]: Analyzing trace with hash -614016519, now seen corresponding path program 1 times [2023-04-02 23:40:32,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:40:32,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477052769] [2023-04-02 23:40:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:32,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:40:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:40:33,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:40:33,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477052769] [2023-04-02 23:40:33,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477052769] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:40:33,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:40:33,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 23:40:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186942419] [2023-04-02 23:40:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:40:33,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 23:40:33,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:40:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 23:40:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:40:33,366 INFO L87 Difference]: Start difference. First operand has 558 states, 328 states have (on average 1.4969512195121952) internal successors, (491), 355 states have internal predecessors, (491), 170 states have call successors, (170), 47 states have call predecessors, (170), 47 states have return successors, (170), 161 states have call predecessors, (170), 170 states have call successors, (170) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-04-02 23:40:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:40:33,533 INFO L93 Difference]: Finished difference Result 467 states and 699 transitions. [2023-04-02 23:40:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 23:40:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 135 [2023-04-02 23:40:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:40:33,557 INFO L225 Difference]: With dead ends: 467 [2023-04-02 23:40:33,557 INFO L226 Difference]: Without dead ends: 433 [2023-04-02 23:40:33,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 23:40:33,564 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:40:33,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:40:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-04-02 23:40:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2023-04-02 23:40:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 275 states have (on average 1.5345454545454544) internal successors, (422), 294 states have internal predecessors, (422), 117 states have call successors, (117), 44 states have call predecessors, (117), 40 states have return successors, (109), 106 states have call predecessors, (109), 109 states have call successors, (109) [2023-04-02 23:40:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 648 transitions. [2023-04-02 23:40:33,654 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 648 transitions. Word has length 135 [2023-04-02 23:40:33,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:40:33,658 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 648 transitions. [2023-04-02 23:40:33,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-04-02 23:40:33,660 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 648 transitions. [2023-04-02 23:40:33,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 23:40:33,672 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:40:33,672 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] [2023-04-02 23:40:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 23:40:33,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:40:33,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:40:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1035133669, now seen corresponding path program 1 times [2023-04-02 23:40:33,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:40:33,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769396762] [2023-04-02 23:40:33,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:33,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:40:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:40:34,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:40:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769396762] [2023-04-02 23:40:34,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769396762] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:40:34,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:40:34,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 23:40:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482085338] [2023-04-02 23:40:34,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:40:34,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:40:34,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:40:34,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:40:34,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 23:40:34,559 INFO L87 Difference]: Start difference. First operand 433 states and 648 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 23:40:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:40:37,015 INFO L93 Difference]: Finished difference Result 1204 states and 1855 transitions. [2023-04-02 23:40:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 23:40:37,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 136 [2023-04-02 23:40:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:40:37,022 INFO L225 Difference]: With dead ends: 1204 [2023-04-02 23:40:37,022 INFO L226 Difference]: Without dead ends: 824 [2023-04-02 23:40:37,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-04-02 23:40:37,026 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1204 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 3704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-04-02 23:40:37,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 504 Invalid, 3704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 3265 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-04-02 23:40:37,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-04-02 23:40:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 799. [2023-04-02 23:40:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 522 states have (on average 1.5555555555555556) internal successors, (812), 555 states have internal predecessors, (812), 208 states have call successors, (208), 71 states have call predecessors, (208), 68 states have return successors, (206), 196 states have call predecessors, (206), 200 states have call successors, (206) [2023-04-02 23:40:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1226 transitions. [2023-04-02 23:40:37,088 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1226 transitions. Word has length 136 [2023-04-02 23:40:37,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:40:37,088 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1226 transitions. [2023-04-02 23:40:37,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (31), 4 states have call predecessors, (31), 4 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-04-02 23:40:37,089 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1226 transitions. [2023-04-02 23:40:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 23:40:37,091 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:40:37,092 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] [2023-04-02 23:40:37,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 23:40:37,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:40:37,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:40:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2135299440, now seen corresponding path program 1 times [2023-04-02 23:40:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:40:37,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438396451] [2023-04-02 23:40:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:37,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:40:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:40:37,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:40:37,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438396451] [2023-04-02 23:40:37,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438396451] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:40:37,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:40:37,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 23:40:37,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499552903] [2023-04-02 23:40:37,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:40:37,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 23:40:37,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:40:37,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 23:40:37,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 23:40:37,460 INFO L87 Difference]: Start difference. First operand 799 states and 1226 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:40:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:40:38,015 INFO L93 Difference]: Finished difference Result 838 states and 1282 transitions. [2023-04-02 23:40:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 23:40:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 140 [2023-04-02 23:40:38,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:40:38,021 INFO L225 Difference]: With dead ends: 838 [2023-04-02 23:40:38,021 INFO L226 Difference]: Without dead ends: 821 [2023-04-02 23:40:38,022 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 [2023-04-02 23:40:38,023 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 656 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 23:40:38,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1994 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 23:40:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-04-02 23:40:38,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 803. [2023-04-02 23:40:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 526 states have (on average 1.5513307984790874) internal successors, (816), 559 states have internal predecessors, (816), 208 states have call successors, (208), 71 states have call predecessors, (208), 68 states have return successors, (206), 196 states have call predecessors, (206), 200 states have call successors, (206) [2023-04-02 23:40:38,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1230 transitions. [2023-04-02 23:40:38,066 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1230 transitions. Word has length 140 [2023-04-02 23:40:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:40:38,067 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1230 transitions. [2023-04-02 23:40:38,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2023-04-02 23:40:38,067 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1230 transitions. [2023-04-02 23:40:38,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-04-02 23:40:38,071 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:40:38,072 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] [2023-04-02 23:40:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 23:40:38,072 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:40:38,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:40:38,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2071540733, now seen corresponding path program 1 times [2023-04-02 23:40:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:40:38,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635228392] [2023-04-02 23:40:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:38,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:40:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 23:40:38,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:40:38,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635228392] [2023-04-02 23:40:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635228392] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:40:38,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 23:40:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 23:40:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143572881] [2023-04-02 23:40:38,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:40:38,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 23:40:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:40:38,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 23:40:38,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 23:40:38,486 INFO L87 Difference]: Start difference. First operand 803 states and 1230 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-02 23:40:38,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:40:38,666 INFO L93 Difference]: Finished difference Result 824 states and 1256 transitions. [2023-04-02 23:40:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 23:40:38,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) Word has length 145 [2023-04-02 23:40:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:40:38,672 INFO L225 Difference]: With dead ends: 824 [2023-04-02 23:40:38,672 INFO L226 Difference]: Without dead ends: 807 [2023-04-02 23:40:38,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-04-02 23:40:38,679 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 10 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4272 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:40:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4272 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:40:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-04-02 23:40:38,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 803. [2023-04-02 23:40:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 526 states have (on average 1.5475285171102662) internal successors, (814), 559 states have internal predecessors, (814), 208 states have call successors, (208), 71 states have call predecessors, (208), 68 states have return successors, (206), 196 states have call predecessors, (206), 200 states have call successors, (206) [2023-04-02 23:40:38,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1228 transitions. [2023-04-02 23:40:38,727 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1228 transitions. Word has length 145 [2023-04-02 23:40:38,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:40:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1228 transitions. [2023-04-02 23:40:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 2 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (29), 4 states have call predecessors, (29), 1 states have call successors, (29) [2023-04-02 23:40:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1228 transitions. [2023-04-02 23:40:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-04-02 23:40:38,732 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:40:38,732 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] [2023-04-02 23:40:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 23:40:38,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:40:38,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:40:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash -723198069, now seen corresponding path program 1 times [2023-04-02 23:40:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:40:38,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389958130] [2023-04-02 23:40:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:40:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 23:40:44,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:40:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389958130] [2023-04-02 23:40:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389958130] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:40:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582958184] [2023-04-02 23:40:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:44,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:40:44,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:40:44,025 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) [2023-04-02 23:40:44,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 23:40:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:44,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 13 conjunts are in the unsatisfiable core [2023-04-02 23:40:44,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:40:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 23:40:44,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 23:40:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582958184] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 23:40:44,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 23:40:44,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [32] total 37 [2023-04-02 23:40:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666536735] [2023-04-02 23:40:44,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 23:40:44,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 23:40:44,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 23:40:44,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 23:40:44,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1232, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 23:40:44,839 INFO L87 Difference]: Start difference. First operand 803 states and 1228 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (32), 4 states have call predecessors, (32), 1 states have call successors, (32) [2023-04-02 23:40:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 23:40:45,068 INFO L93 Difference]: Finished difference Result 846 states and 1282 transitions. [2023-04-02 23:40:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 23:40:45,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (32), 4 states have call predecessors, (32), 1 states have call successors, (32) Word has length 160 [2023-04-02 23:40:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 23:40:45,073 INFO L225 Difference]: With dead ends: 846 [2023-04-02 23:40:45,073 INFO L226 Difference]: Without dead ends: 829 [2023-04-02 23:40:45,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 23:40:45,075 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 8 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 23:40:45,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3704 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 23:40:45,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-04-02 23:40:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2023-04-02 23:40:45,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 534 states have (on average 1.5393258426966292) internal successors, (822), 567 states have internal predecessors, (822), 208 states have call successors, (208), 71 states have call predecessors, (208), 72 states have return successors, (210), 200 states have call predecessors, (210), 200 states have call successors, (210) [2023-04-02 23:40:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1240 transitions. [2023-04-02 23:40:45,123 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1240 transitions. Word has length 160 [2023-04-02 23:40:45,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 23:40:45,123 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1240 transitions. [2023-04-02 23:40:45,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (36), 2 states have call predecessors, (36), 4 states have return successors, (32), 4 states have call predecessors, (32), 1 states have call successors, (32) [2023-04-02 23:40:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1240 transitions. [2023-04-02 23:40:45,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-04-02 23:40:45,127 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 23:40:45,127 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] [2023-04-02 23:40:45,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 23:40:45,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:40:45,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 23:40:45,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 23:40:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1849869357, now seen corresponding path program 1 times [2023-04-02 23:40:45,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 23:40:45,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124280813] [2023-04-02 23:40:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:45,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 23:40:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-04-02 23:40:47,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 23:40:47,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124280813] [2023-04-02 23:40:47,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124280813] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 23:40:47,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310526611] [2023-04-02 23:40:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 23:40:47,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 23:40:47,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 23:40:47,493 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) [2023-04-02 23:40:47,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 23:40:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 23:40:48,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 41 conjunts are in the unsatisfiable core [2023-04-02 23:40:48,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 23:40:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 23:40:48,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 23:41:30,748 WARN L223 SmtUtils]: Spent 41.20s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:42:14,924 WARN L223 SmtUtils]: Spent 41.36s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:42:56,666 WARN L223 SmtUtils]: Spent 41.12s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:43:38,262 WARN L223 SmtUtils]: Spent 40.96s on a formula simplification. DAG size of input: 1441 DAG size of output: 51 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 23:43:38,886 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-04-02 23:43:38,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310526611] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 23:43:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1722050924] [2023-04-02 23:43:38,906 INFO L159 IcfgInterpreter]: Started Sifa with 152 locations of interest [2023-04-02 23:43:38,906 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 23:43:38,909 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 23:43:38,913 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 23:43:38,914 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 23:43:40,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 181 for LOIs [2023-04-02 23:43:41,306 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 235 for LOIs [2023-04-02 23:43:43,983 INFO L197 IcfgInterpreter]: Interpreting procedure runTest with input of size 235 for LOIs [2023-04-02 23:43:47,946 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 123071 conjuctions. This might take some time...