./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash faf917cd0a1eaa2ad9dee590b3f946754d69847d6ec93638a854081a172b37da --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:30:35,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:30:35,697 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:30:35,702 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:30:35,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:30:35,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:30:35,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:30:35,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:30:35,727 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:30:35,727 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:30:35,728 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:30:35,728 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:30:35,728 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:30:35,728 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:30:35,728 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:30:35,728 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:30:35,728 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:30:35,729 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:30:35,729 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:30:35,729 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:30:35,729 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:30:35,729 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:30:35,730 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:30:35,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:30:35,730 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:30:35,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:30:35,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:30:35,731 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:30:35,732 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:30:35,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:30:35,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:30:35,732 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:30:35,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:30:35,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:30:35,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:30:35,733 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:30:35,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:30:35,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:30:35,733 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:30:35,733 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:30:35,733 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faf917cd0a1eaa2ad9dee590b3f946754d69847d6ec93638a854081a172b37da [2024-11-14 03:30:36,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:30:36,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:30:36,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:30:36,049 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:30:36,050 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:30:36,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/eca-rers2012/Problem01_label55.c Unable to find full path for "g++" [2024-11-14 03:30:37,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:30:38,414 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:30:38,416 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/sv-benchmarks/c/eca-rers2012/Problem01_label55.c [2024-11-14 03:30:38,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/data/d411ebab7/40048226efcb425c94522c10c3015f17/FLAGc88bd37d7 [2024-11-14 03:30:38,449 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/data/d411ebab7/40048226efcb425c94522c10c3015f17 [2024-11-14 03:30:38,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:30:38,453 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:30:38,454 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:30:38,454 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:30:38,461 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:30:38,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:38,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e927a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38, skipping insertion in model container [2024-11-14 03:30:38,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:38,513 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:30:38,830 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/sv-benchmarks/c/eca-rers2012/Problem01_label55.c[19349,19362] [2024-11-14 03:30:38,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:30:38,873 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:30:38,960 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/sv-benchmarks/c/eca-rers2012/Problem01_label55.c[19349,19362] [2024-11-14 03:30:38,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:30:38,995 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:30:38,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38 WrapperNode [2024-11-14 03:30:38,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:30:38,997 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:30:38,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:30:38,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:30:39,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,084 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2024-11-14 03:30:39,084 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:30:39,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:30:39,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:30:39,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:30:39,093 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:30:39,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:30:39,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:30:39,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:30:39,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (1/1) ... [2024-11-14 03:30:39,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:30:39,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:30:39,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:30:39,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:30:39,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:30:39,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:30:39,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:30:39,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:30:39,338 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:30:39,341 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:30:40,662 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-14 03:30:40,662 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:30:41,034 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:30:41,036 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:30:41,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:30:41 BoogieIcfgContainer [2024-11-14 03:30:41,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:30:41,040 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:30:41,040 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:30:41,045 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:30:41,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:30:38" (1/3) ... [2024-11-14 03:30:41,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4039a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:30:41, skipping insertion in model container [2024-11-14 03:30:41,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:30:38" (2/3) ... [2024-11-14 03:30:41,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4039a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:30:41, skipping insertion in model container [2024-11-14 03:30:41,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:30:41" (3/3) ... [2024-11-14 03:30:41,048 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2024-11-14 03:30:41,066 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:30:41,069 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem01_label55.c that has 1 procedures, 76 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:30:41,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:30:41,162 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@2fd95f2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:30:41,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:30:41,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 03:30:41,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:41,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:30:41,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:30:41,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash -131200522, now seen corresponding path program 1 times [2024-11-14 03:30:41,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:30:41,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720285104] [2024-11-14 03:30:41,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:30:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:30:41,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:30:41,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720285104] [2024-11-14 03:30:41,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720285104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:41,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:41,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:30:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372330788] [2024-11-14 03:30:41,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:41,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:30:41,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:30:41,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:30:41,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:41,899 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:42,514 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2024-11-14 03:30:42,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:30:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-14 03:30:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:42,526 INFO L225 Difference]: With dead ends: 224 [2024-11-14 03:30:42,526 INFO L226 Difference]: Without dead ends: 145 [2024-11-14 03:30:42,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:42,533 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:42,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-14 03:30:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-14 03:30:42,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-14 03:30:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.8819444444444444) internal successors, (271), 144 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:42,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 271 transitions. [2024-11-14 03:30:42,584 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 271 transitions. Word has length 71 [2024-11-14 03:30:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:42,585 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 271 transitions. [2024-11-14 03:30:42,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:42,588 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 271 transitions. [2024-11-14 03:30:42,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 03:30:42,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:42,591 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:30:42,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:30:42,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:30:42,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1553026799, now seen corresponding path program 1 times [2024-11-14 03:30:42,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:30:42,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329200038] [2024-11-14 03:30:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:42,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:30:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:30:42,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:30:42,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329200038] [2024-11-14 03:30:42,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329200038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:42,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:30:42,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317805897] [2024-11-14 03:30:42,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:42,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:30:42,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:30:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:30:42,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:42,806 INFO L87 Difference]: Start difference. First operand 145 states and 271 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:43,291 INFO L93 Difference]: Finished difference Result 431 states and 810 transitions. [2024-11-14 03:30:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:30:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-14 03:30:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:43,294 INFO L225 Difference]: With dead ends: 431 [2024-11-14 03:30:43,294 INFO L226 Difference]: Without dead ends: 287 [2024-11-14 03:30:43,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:43,296 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 112 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:43,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 25 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 03:30:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-14 03:30:43,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-14 03:30:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.7622377622377623) internal successors, (504), 286 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:43,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 504 transitions. [2024-11-14 03:30:43,321 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 504 transitions. Word has length 76 [2024-11-14 03:30:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:43,321 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 504 transitions. [2024-11-14 03:30:43,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:43,322 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 504 transitions. [2024-11-14 03:30:43,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 03:30:43,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:43,325 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 03:30:43,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:30:43,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:30:43,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1590840566, now seen corresponding path program 1 times [2024-11-14 03:30:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:30:43,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919196030] [2024-11-14 03:30:43,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:43,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:30:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:30:43,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:30:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919196030] [2024-11-14 03:30:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919196030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:43,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:30:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165009524] [2024-11-14 03:30:43,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:43,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:30:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:30:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:30:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:43,702 INFO L87 Difference]: Start difference. First operand 287 states and 504 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:44,125 INFO L93 Difference]: Finished difference Result 786 states and 1371 transitions. [2024-11-14 03:30:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:30:44,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-14 03:30:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:44,129 INFO L225 Difference]: With dead ends: 786 [2024-11-14 03:30:44,131 INFO L226 Difference]: Without dead ends: 500 [2024-11-14 03:30:44,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:44,133 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 62 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:44,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 52 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:30:44,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-14 03:30:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 429. [2024-11-14 03:30:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 1.5934579439252337) internal successors, (682), 428 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 682 transitions. [2024-11-14 03:30:44,156 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 682 transitions. Word has length 86 [2024-11-14 03:30:44,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:44,157 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 682 transitions. [2024-11-14 03:30:44,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:44,157 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 682 transitions. [2024-11-14 03:30:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 03:30:44,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:44,161 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-14 03:30:44,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:30:44,161 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:30:44,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2120209051, now seen corresponding path program 1 times [2024-11-14 03:30:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:30:44,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276344789] [2024-11-14 03:30:44,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:44,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:30:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 03:30:44,374 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:30:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276344789] [2024-11-14 03:30:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276344789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:30:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:30:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283301706] [2024-11-14 03:30:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:44,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:30:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:30:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:30:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:44,377 INFO L87 Difference]: Start difference. First operand 429 states and 682 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:44,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:44,781 INFO L93 Difference]: Finished difference Result 999 states and 1596 transitions. [2024-11-14 03:30:44,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:30:44,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-14 03:30:44,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:44,786 INFO L225 Difference]: With dead ends: 999 [2024-11-14 03:30:44,786 INFO L226 Difference]: Without dead ends: 571 [2024-11-14 03:30:44,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:30:44,787 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 67 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:44,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 70 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:30:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-11-14 03:30:44,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 500. [2024-11-14 03:30:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5330661322645291) internal successors, (765), 499 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 765 transitions. [2024-11-14 03:30:44,817 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 765 transitions. Word has length 87 [2024-11-14 03:30:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:44,817 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 765 transitions. [2024-11-14 03:30:44,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 765 transitions. [2024-11-14 03:30:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-14 03:30:44,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:44,821 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2024-11-14 03:30:44,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:30:44,822 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:30:44,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:44,822 INFO L85 PathProgramCache]: Analyzing trace with hash 39349213, now seen corresponding path program 1 times [2024-11-14 03:30:44,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:30:44,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826836138] [2024-11-14 03:30:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:30:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 03:30:45,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:30:45,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826836138] [2024-11-14 03:30:45,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826836138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:30:45,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944766381] [2024-11-14 03:30:45,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:45,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:30:45,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:30:45,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:30:45,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:30:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:45,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:30:45,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-14 03:30:45,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:45,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944766381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:45,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:30:45,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 03:30:45,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324141947] [2024-11-14 03:30:45,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:45,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:30:45,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:30:45,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:30:45,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:30:45,513 INFO L87 Difference]: Start difference. First operand 500 states and 765 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:45,940 INFO L93 Difference]: Finished difference Result 1283 states and 1982 transitions. [2024-11-14 03:30:45,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:30:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-14 03:30:45,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:45,944 INFO L225 Difference]: With dead ends: 1283 [2024-11-14 03:30:45,944 INFO L226 Difference]: Without dead ends: 784 [2024-11-14 03:30:45,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:30:45,946 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:45,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 138 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:30:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-14 03:30:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 642. [2024-11-14 03:30:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4414976599063962) internal successors, (924), 641 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:45,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 924 transitions. [2024-11-14 03:30:45,967 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 924 transitions. Word has length 91 [2024-11-14 03:30:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:45,968 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 924 transitions. [2024-11-14 03:30:45,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:45,968 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 924 transitions. [2024-11-14 03:30:45,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-14 03:30:45,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:30:45,973 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-14 03:30:45,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:30:46,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:30:46,177 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:30:46,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:30:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2117264777, now seen corresponding path program 1 times [2024-11-14 03:30:46,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:30:46,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195168046] [2024-11-14 03:30:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:46,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:30:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-14 03:30:46,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:30:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195168046] [2024-11-14 03:30:46,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195168046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:30:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40448863] [2024-11-14 03:30:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:30:46,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:30:46,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:30:46,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:30:46,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:30:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:30:46,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 03:30:46,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:30:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-14 03:30:46,822 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:30:46,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40448863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:30:46,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:30:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-14 03:30:46,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322711646] [2024-11-14 03:30:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:30:46,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:30:46,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:30:46,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:30:46,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:30:46,826 INFO L87 Difference]: Start difference. First operand 642 states and 924 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:30:47,191 INFO L93 Difference]: Finished difference Result 926 states and 1298 transitions. [2024-11-14 03:30:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:30:47,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2024-11-14 03:30:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:30:47,193 INFO L225 Difference]: With dead ends: 926 [2024-11-14 03:30:47,193 INFO L226 Difference]: Without dead ends: 0 [2024-11-14 03:30:47,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:30:47,195 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:30:47,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 24 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 03:30:47,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-14 03:30:47,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-14 03:30:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:47,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-14 03:30:47,199 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2024-11-14 03:30:47,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:30:47,200 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-14 03:30:47,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:30:47,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-14 03:30:47,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-14 03:30:47,204 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:30:47,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 03:30:47,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 03:30:47,412 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-14 03:30:47,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-14 03:30:47,478 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:30:47,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:30:47 BoogieIcfgContainer [2024-11-14 03:30:47,493 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:30:47,494 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:30:47,495 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:30:47,495 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:30:47,495 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:30:41" (3/4) ... [2024-11-14 03:30:47,498 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-14 03:30:47,519 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2024-11-14 03:30:47,523 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-14 03:30:47,524 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-14 03:30:47,525 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-14 03:30:47,689 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:30:47,689 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/witness.yml [2024-11-14 03:30:47,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:30:47,691 INFO L158 Benchmark]: Toolchain (without parser) took 9237.73ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 92.3MB in the beginning and 270.3MB in the end (delta: -178.1MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2024-11-14 03:30:47,693 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:30:47,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.10ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 65.4MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 03:30:47,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.50ms. Allocated memory is still 117.4MB. Free memory was 65.4MB in the beginning and 60.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:30:47,694 INFO L158 Benchmark]: Boogie Preprocessor took 75.38ms. Allocated memory is still 117.4MB. Free memory was 60.1MB in the beginning and 55.9MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:30:47,695 INFO L158 Benchmark]: RCFGBuilder took 1875.80ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 55.9MB in the beginning and 258.2MB in the end (delta: -202.3MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2024-11-14 03:30:47,696 INFO L158 Benchmark]: TraceAbstraction took 6453.71ms. Allocated memory is still 352.3MB. Free memory was 257.5MB in the beginning and 282.3MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:30:47,696 INFO L158 Benchmark]: Witness Printer took 195.75ms. Allocated memory is still 352.3MB. Free memory was 282.3MB in the beginning and 270.3MB in the end (delta: 12.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 03:30:47,699 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.10ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 65.4MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.50ms. Allocated memory is still 117.4MB. Free memory was 65.4MB in the beginning and 60.1MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 75.38ms. Allocated memory is still 117.4MB. Free memory was 60.1MB in the beginning and 55.9MB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1875.80ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 55.9MB in the beginning and 258.2MB in the end (delta: -202.3MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6453.71ms. Allocated memory is still 352.3MB. Free memory was 257.5MB in the beginning and 282.3MB in the end (delta: -24.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 195.75ms. Allocated memory is still 352.3MB. Free memory was 282.3MB in the beginning and 270.3MB in the end (delta: 12.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 519]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 381 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1275 IncrementalHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 381 mSolverCounterUnsat, 303 mSDtfsCounter, 1275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=642occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 284 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 726 NumberOfCodeBlocks, 726 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 718 ConstructedInterpolants, 0 QuantifiedInterpolants, 1478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 601 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 205/211 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a21 == 1) && (a17 == 1)) && (a20 == 1)) || (a16 < 6)) || (a17 < 1)) || ((a21 == 1) && (15 <= a8))) RESULT: Ultimate proved your program to be correct! [2024-11-14 03:30:47,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cc27bf9-7070-4465-99cf-a79ba142a65c/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE