./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/Dubois-090.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/xcsp/Dubois-090.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20304bce4ef03ad5f89af075dd784b96ba9cf71cfbfba5148bc3262c1794dc0c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:23:14,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:23:14,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:23:14,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:23:14,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:23:14,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:23:14,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:23:14,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:23:14,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:23:14,964 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:23:14,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:23:14,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:23:14,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:23:14,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:23:14,968 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:23:14,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:23:14,969 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:23:14,969 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:23:14,969 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:23:14,970 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:23:14,970 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:23:14,971 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:23:14,974 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:23:14,975 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:23:14,975 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:23:14,975 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:23:14,975 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:23:14,975 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:23:14,976 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:23:14,976 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:23:14,976 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:23:14,976 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:23:14,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:23:14,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:23:14,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:23:14,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:23:14,978 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:23:14,978 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:23:14,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:23:14,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:23:14,979 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:23:14,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:23:14,979 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20304bce4ef03ad5f89af075dd784b96ba9cf71cfbfba5148bc3262c1794dc0c [2024-11-18 15:23:15,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:23:15,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:23:15,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:23:15,316 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:23:15,316 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:23:15,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/Dubois-090.c [2024-11-18 15:23:16,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:23:17,057 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:23:17,058 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-090.c [2024-11-18 15:23:17,082 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed35dc191/a92701e023bf406fa5180231bd041098/FLAG1c97795cd [2024-11-18 15:23:17,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed35dc191/a92701e023bf406fa5180231bd041098 [2024-11-18 15:23:17,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:23:17,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:23:17,114 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:23:17,114 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:23:17,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:23:17,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:23:17" (1/1) ... [2024-11-18 15:23:17,123 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1537f41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:17, skipping insertion in model container [2024-11-18 15:23:17,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:23:17" (1/1) ... [2024-11-18 15:23:17,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:23:17,829 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-090.c[64320,64333] [2024-11-18 15:23:17,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:23:17,904 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:23:18,138 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/Dubois-090.c[64320,64333] [2024-11-18 15:23:18,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:23:18,187 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:23:18,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18 WrapperNode [2024-11-18 15:23:18,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:23:18,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:23:18,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:23:18,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:23:18,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:18,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:19,355 INFO L138 Inliner]: procedures = 13, calls = 727, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17926 [2024-11-18 15:23:19,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:23:19,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:23:19,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:23:19,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:23:19,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:19,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:19,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:20,198 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:23:20,199 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:20,199 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:20,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:20,932 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:20,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:21,034 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:21,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:23:21,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:23:21,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:23:21,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:23:21,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (1/1) ... [2024-11-18 15:23:21,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:23:21,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:21,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:23:21,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:23:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:23:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:23:21,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:23:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:23:21,333 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-18 15:23:21,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-18 15:23:21,798 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:23:21,801 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:23:46,843 INFO L? ?]: Removed 6215 outVars from TransFormulas that were not future-live. [2024-11-18 15:23:46,843 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:23:46,939 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:23:46,940 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-18 15:23:46,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:46 BoogieIcfgContainer [2024-11-18 15:23:46,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:23:46,943 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:23:46,943 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:23:46,946 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:23:46,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:23:17" (1/3) ... [2024-11-18 15:23:46,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2953ad8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:46, skipping insertion in model container [2024-11-18 15:23:46,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:23:18" (2/3) ... [2024-11-18 15:23:46,949 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2953ad8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:23:46, skipping insertion in model container [2024-11-18 15:23:46,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:23:46" (3/3) ... [2024-11-18 15:23:46,951 INFO L112 eAbstractionObserver]: Analyzing ICFG Dubois-090.c [2024-11-18 15:23:46,970 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:23:46,970 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 15:23:47,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:23:47,163 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=PETRI_NET, 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;@38ae4be2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:23:47,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 15:23:47,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 7121 states, 6398 states have (on average 1.6192560175054704) internal successors, (10360), 6399 states have internal predecessors, (10360), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-18 15:23:47,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6034 [2024-11-18 15:23:47,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:47,483 INFO L215 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:47,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:47,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:47,490 INFO L85 PathProgramCache]: Analyzing trace with hash -94916771, now seen corresponding path program 1 times [2024-11-18 15:23:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653739515] [2024-11-18 15:23:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 0 proven. 1438 refuted. 0 times theorem prover too weak. 1033922 trivial. 0 not checked. [2024-11-18 15:23:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:23:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653739515] [2024-11-18 15:23:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653739515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:23:53,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735521288] [2024-11-18 15:23:53,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:53,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:23:53,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:23:53,450 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) [2024-11-18 15:23:53,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:23:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:23:55,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 13166 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 15:23:55,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:23:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1438 proven. 0 refuted. 0 times theorem prover too weak. 1033922 trivial. 0 not checked. [2024-11-18 15:23:56,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:23:56,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735521288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:23:56,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:23:56,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 15:23:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40664386] [2024-11-18 15:23:56,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:23:56,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 15:23:56,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:23:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 15:23:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:23:56,405 INFO L87 Difference]: Start difference. First operand has 7121 states, 6398 states have (on average 1.6192560175054704) internal successors, (10360), 6399 states have internal predecessors, (10360), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) Second operand has 2 states, 2 states have (on average 1219.0) internal successors, (2438), 2 states have internal predecessors, (2438), 2 states have call successors, (720), 2 states have call predecessors, (720), 1 states have return successors, (720), 1 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-18 15:23:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:23:56,676 INFO L93 Difference]: Finished difference Result 14236 states and 24314 transitions. [2024-11-18 15:23:56,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 15:23:56,680 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1219.0) internal successors, (2438), 2 states have internal predecessors, (2438), 2 states have call successors, (720), 2 states have call predecessors, (720), 1 states have return successors, (720), 1 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6033 [2024-11-18 15:23:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:23:56,733 INFO L225 Difference]: With dead ends: 14236 [2024-11-18 15:23:56,733 INFO L226 Difference]: Without dead ends: 7118 [2024-11-18 15:23:56,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6034 GetRequests, 6034 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 15:23:56,758 INFO L432 NwaCegarLoop]: 11796 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 11796 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:23:56,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11796 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:23:56,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2024-11-18 15:23:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 7118. [2024-11-18 15:23:57,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7118 states, 6396 states have (on average 1.6191369606003752) internal successors, (10356), 6396 states have internal predecessors, (10356), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-18 15:23:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 11796 transitions. [2024-11-18 15:23:57,328 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 11796 transitions. Word has length 6033 [2024-11-18 15:23:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:23:57,332 INFO L471 AbstractCegarLoop]: Abstraction has 7118 states and 11796 transitions. [2024-11-18 15:23:57,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1219.0) internal successors, (2438), 2 states have internal predecessors, (2438), 2 states have call successors, (720), 2 states have call predecessors, (720), 1 states have return successors, (720), 1 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-18 15:23:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 11796 transitions. [2024-11-18 15:23:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6034 [2024-11-18 15:23:57,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:23:57,590 INFO L215 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:23:57,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:23:57,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 15:23:57,792 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:23:57,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:23:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash -896064035, now seen corresponding path program 1 times [2024-11-18 15:23:57,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:23:57,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424686462] [2024-11-18 15:23:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:23:57,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:23:58,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-18 15:24:11,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:24:11,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424686462] [2024-11-18 15:24:11,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424686462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:24:11,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009831764] [2024-11-18 15:24:11,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:11,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:24:11,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:24:11,107 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) [2024-11-18 15:24:11,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:24:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:13,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 13166 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 15:24:13,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:24:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2157 proven. 0 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-18 15:24:14,040 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:24:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009831764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:24:14,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:24:14,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-18 15:24:14,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761498008] [2024-11-18 15:24:14,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:24:14,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:24:14,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:24:14,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:24:14,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:14,056 INFO L87 Difference]: Start difference. First operand 7118 states and 11796 transitions. Second operand has 6 states, 5 states have (on average 487.8) internal successors, (2439), 6 states have internal predecessors, (2439), 2 states have call successors, (720), 1 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-18 15:24:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:24:17,571 INFO L93 Difference]: Finished difference Result 7130 states and 11810 transitions. [2024-11-18 15:24:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:24:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 487.8) internal successors, (2439), 6 states have internal predecessors, (2439), 2 states have call successors, (720), 1 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6033 [2024-11-18 15:24:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:24:17,627 INFO L225 Difference]: With dead ends: 7130 [2024-11-18 15:24:17,628 INFO L226 Difference]: Without dead ends: 7120 [2024-11-18 15:24:17,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6038 GetRequests, 6032 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:17,638 INFO L432 NwaCegarLoop]: 11072 mSDtfsCounter, 1 mSDsluCounter, 42835 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53907 SdHoareTripleChecker+Invalid, 5070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-18 15:24:17,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53907 Invalid, 5070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 5069 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-18 15:24:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2024-11-18 15:24:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 7120. [2024-11-18 15:24:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 6398 states have (on average 1.6189434198186934) internal successors, (10358), 6398 states have internal predecessors, (10358), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-18 15:24:18,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 11798 transitions. [2024-11-18 15:24:18,060 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 11798 transitions. Word has length 6033 [2024-11-18 15:24:18,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:24:18,076 INFO L471 AbstractCegarLoop]: Abstraction has 7120 states and 11798 transitions. [2024-11-18 15:24:18,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 487.8) internal successors, (2439), 6 states have internal predecessors, (2439), 2 states have call successors, (720), 1 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-18 15:24:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 11798 transitions. [2024-11-18 15:24:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6035 [2024-11-18 15:24:18,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:24:18,339 INFO L215 NwaCegarLoop]: trace histogram [720, 720, 720, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:24:18,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 15:24:18,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-18 15:24:18,541 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:24:18,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:24:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -776321517, now seen corresponding path program 1 times [2024-11-18 15:24:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:24:18,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109815542] [2024-11-18 15:24:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:18,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:24:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 1620 proven. 537 refuted. 0 times theorem prover too weak. 1033203 trivial. 0 not checked. [2024-11-18 15:24:27,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:24:27,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109815542] [2024-11-18 15:24:27,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109815542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:24:27,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909863208] [2024-11-18 15:24:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:24:27,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:24:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:24:27,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-18 15:24:27,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:24:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:24:29,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 13169 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 15:24:29,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:24:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1035360 backedges. 2876 proven. 0 refuted. 0 times theorem prover too weak. 1032484 trivial. 0 not checked. [2024-11-18 15:24:30,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:24:30,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909863208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:24:30,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:24:30,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-18 15:24:30,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422292753] [2024-11-18 15:24:30,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:24:30,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:24:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:24:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:24:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:30,031 INFO L87 Difference]: Start difference. First operand 7120 states and 11798 transitions. Second operand has 4 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-18 15:24:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:24:30,296 INFO L93 Difference]: Finished difference Result 7150 states and 11840 transitions. [2024-11-18 15:24:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:24:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) Word has length 6034 [2024-11-18 15:24:30,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:24:30,340 INFO L225 Difference]: With dead ends: 7150 [2024-11-18 15:24:30,340 INFO L226 Difference]: Without dead ends: 7129 [2024-11-18 15:24:30,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6039 GetRequests, 6033 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-18 15:24:30,346 INFO L432 NwaCegarLoop]: 11792 mSDtfsCounter, 9 mSDsluCounter, 23571 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 35363 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:24:30,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 35363 Invalid, 25 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:24:30,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7129 states. [2024-11-18 15:24:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7129 to 7129. [2024-11-18 15:24:30,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7129 states, 6407 states have (on average 1.6186982987357577) internal successors, (10371), 6407 states have internal predecessors, (10371), 720 states have call successors, (720), 1 states have call predecessors, (720), 1 states have return successors, (720), 720 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-18 15:24:30,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7129 states to 7129 states and 11811 transitions. [2024-11-18 15:24:30,833 INFO L78 Accepts]: Start accepts. Automaton has 7129 states and 11811 transitions. Word has length 6034 [2024-11-18 15:24:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:24:30,842 INFO L471 AbstractCegarLoop]: Abstraction has 7129 states and 11811 transitions. [2024-11-18 15:24:30,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 610.0) internal successors, (2440), 4 states have internal predecessors, (2440), 2 states have call successors, (720), 2 states have call predecessors, (720), 2 states have return successors, (720), 2 states have call predecessors, (720), 2 states have call successors, (720) [2024-11-18 15:24:30,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7129 states and 11811 transitions.