./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de62.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/loops-crafted-1/in-de62.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 de9532d8dfc4a0a0cd7c7b5fdf45ac6c04e52382fa165e3cc41d86867bc75adf --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 14:11:37,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 14:11:37,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 14:11:37,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 14:11:37,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 14:11:37,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 14:11:37,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 14:11:37,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 14:11:37,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 14:11:37,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 14:11:37,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 14:11:37,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 14:11:37,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 14:11:37,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 14:11:37,807 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 14:11:37,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 14:11:37,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 14:11:37,808 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 14:11:37,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 14:11:37,808 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 14:11:37,809 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 14:11:37,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 14:11:37,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 14:11:37,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 14:11:37,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 14:11:37,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 14:11:37,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 14:11:37,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 14:11:37,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 14:11:37,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 14:11:37,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 14:11:37,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 14:11:37,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:11:37,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 14:11:37,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 14:11:37,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 14:11:37,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 14:11:37,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 14:11:37,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 14:11:37,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 14:11:37,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 14:11:37,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 14:11:37,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de9532d8dfc4a0a0cd7c7b5fdf45ac6c04e52382fa165e3cc41d86867bc75adf [2024-11-08 14:11:38,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 14:11:38,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 14:11:38,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 14:11:38,089 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 14:11:38,090 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 14:11:38,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de62.c [2024-11-08 14:11:39,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 14:11:39,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 14:11:39,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de62.c [2024-11-08 14:11:39,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b54c1299c/d978bcc83c38423da07db55b188f3914/FLAGf8340ed9f [2024-11-08 14:11:39,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b54c1299c/d978bcc83c38423da07db55b188f3914 [2024-11-08 14:11:39,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 14:11:39,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 14:11:39,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 14:11:39,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 14:11:39,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 14:11:39,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:11:39" (1/1) ... [2024-11-08 14:11:39,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c4f297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:39, skipping insertion in model container [2024-11-08 14:11:39,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 02:11:39" (1/1) ... [2024-11-08 14:11:39,768 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 14:11:39,956 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/loops-crafted-1/in-de62.c[368,381] [2024-11-08 14:11:39,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:11:39,979 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 14:11:39,990 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/loops-crafted-1/in-de62.c[368,381] [2024-11-08 14:11:39,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 14:11:40,011 INFO L204 MainTranslator]: Completed translation [2024-11-08 14:11:40,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40 WrapperNode [2024-11-08 14:11:40,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 14:11:40,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 14:11:40,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 14:11:40,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 14:11:40,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,042 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 85 [2024-11-08 14:11:40,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 14:11:40,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 14:11:40,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 14:11:40,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 14:11:40,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,055 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,066 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]. [2024-11-08 14:11:40,066 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 14:11:40,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 14:11:40,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 14:11:40,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 14:11:40,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (1/1) ... [2024-11-08 14:11:40,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 14:11:40,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:40,123 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) [2024-11-08 14:11:40,127 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 [2024-11-08 14:11:40,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 14:11:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 14:11:40,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 14:11:40,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 14:11:40,246 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 14:11:40,248 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 14:11:40,423 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-08 14:11:40,424 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 14:11:40,435 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 14:11:40,435 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-08 14:11:40,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:11:40 BoogieIcfgContainer [2024-11-08 14:11:40,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 14:11:40,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 14:11:40,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 14:11:40,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 14:11:40,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 02:11:39" (1/3) ... [2024-11-08 14:11:40,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1d6aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:11:40, skipping insertion in model container [2024-11-08 14:11:40,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 02:11:40" (2/3) ... [2024-11-08 14:11:40,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1d6aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 02:11:40, skipping insertion in model container [2024-11-08 14:11:40,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 02:11:40" (3/3) ... [2024-11-08 14:11:40,446 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de62.c [2024-11-08 14:11:40,463 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 14:11:40,464 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 14:11:40,528 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 14:11:40,535 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;@49f7de83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 14:11:40,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 14:11:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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) [2024-11-08 14:11:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 14:11:40,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:40,550 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:40,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:40,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:40,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1928996963, now seen corresponding path program 1 times [2024-11-08 14:11:40,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:40,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870119557] [2024-11-08 14:11:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:40,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870119557] [2024-11-08 14:11:40,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870119557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:11:40,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:11:40,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 14:11:40,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580773459] [2024-11-08 14:11:40,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:11:40,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 14:11:40,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 14:11:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:11:40,747 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-08 14:11:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:40,764 INFO L93 Difference]: Finished difference Result 31 states and 53 transitions. [2024-11-08 14:11:40,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 14:11:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-08 14:11:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:40,776 INFO L225 Difference]: With dead ends: 31 [2024-11-08 14:11:40,776 INFO L226 Difference]: Without dead ends: 13 [2024-11-08 14:11:40,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 14:11:40,786 INFO L432 NwaCegarLoop]: 22 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, 22 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 [2024-11-08 14:11:40,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:11:40,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-08 14:11:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-08 14:11:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2024-11-08 14:11:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2024-11-08 14:11:40,823 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 12 [2024-11-08 14:11:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:40,823 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 18 transitions. [2024-11-08 14:11:40,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-08 14:11:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2024-11-08 14:11:40,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 14:11:40,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:40,825 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:40,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 14:11:40,826 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:40,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:40,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1814480359, now seen corresponding path program 1 times [2024-11-08 14:11:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:40,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701428300] [2024-11-08 14:11:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:41,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:41,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701428300] [2024-11-08 14:11:41,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701428300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:11:41,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:11:41,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 14:11:41,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435337417] [2024-11-08 14:11:41,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:11:41,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:11:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:11:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 14:11:41,170 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-08 14:11:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:41,213 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2024-11-08 14:11:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:11:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2024-11-08 14:11:41,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:41,214 INFO L225 Difference]: With dead ends: 27 [2024-11-08 14:11:41,214 INFO L226 Difference]: Without dead ends: 18 [2024-11-08 14:11:41,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 14:11:41,216 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:41,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 33 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:11:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-08 14:11:41,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-08 14:11:41,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 17 states have internal predecessors, (26), 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) [2024-11-08 14:11:41,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2024-11-08 14:11:41,225 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 26 transitions. Word has length 12 [2024-11-08 14:11:41,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:41,225 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 26 transitions. [2024-11-08 14:11:41,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2024-11-08 14:11:41,225 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 26 transitions. [2024-11-08 14:11:41,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 14:11:41,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:41,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:41,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 14:11:41,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:41,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash 415981709, now seen corresponding path program 1 times [2024-11-08 14:11:41,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303515378] [2024-11-08 14:11:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:41,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303515378] [2024-11-08 14:11:41,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303515378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:11:41,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:11:41,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 14:11:41,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781497202] [2024-11-08 14:11:41,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:11:41,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 14:11:41,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:41,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 14:11:41,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 14:11:41,304 INFO L87 Difference]: Start difference. First operand 18 states and 26 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-08 14:11:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:41,350 INFO L93 Difference]: Finished difference Result 41 states and 63 transitions. [2024-11-08 14:11:41,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 14:11:41,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2024-11-08 14:11:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:41,351 INFO L225 Difference]: With dead ends: 41 [2024-11-08 14:11:41,354 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 14:11:41,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 14:11:41,356 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:41,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:11:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 14:11:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-08 14:11:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 states have internal predecessors, (41), 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) [2024-11-08 14:11:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 41 transitions. [2024-11-08 14:11:41,377 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 41 transitions. Word has length 13 [2024-11-08 14:11:41,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:41,377 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 41 transitions. [2024-11-08 14:11:41,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-08 14:11:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2024-11-08 14:11:41,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 14:11:41,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:41,381 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:41,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 14:11:41,381 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:41,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash 461234238, now seen corresponding path program 1 times [2024-11-08 14:11:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919705029] [2024-11-08 14:11:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:41,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:41,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:41,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919705029] [2024-11-08 14:11:41,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919705029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:11:41,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:11:41,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 14:11:41,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704052120] [2024-11-08 14:11:41,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:11:41,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 14:11:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 14:11:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 14:11:41,442 INFO L87 Difference]: Start difference. First operand 28 states and 41 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-08 14:11:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:41,469 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2024-11-08 14:11:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 14:11:41,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2024-11-08 14:11:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:41,474 INFO L225 Difference]: With dead ends: 43 [2024-11-08 14:11:41,474 INFO L226 Difference]: Without dead ends: 32 [2024-11-08 14:11:41,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 14:11:41,475 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:41,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:11:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-08 14:11:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-08 14:11:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 31 states have internal predecessors, (46), 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) [2024-11-08 14:11:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions. [2024-11-08 14:11:41,489 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 13 [2024-11-08 14:11:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:41,489 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 46 transitions. [2024-11-08 14:11:41,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-08 14:11:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions. [2024-11-08 14:11:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 14:11:41,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:41,490 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:41,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 14:11:41,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:41,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1348188691, now seen corresponding path program 1 times [2024-11-08 14:11:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:41,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475711346] [2024-11-08 14:11:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:41,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:41,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475711346] [2024-11-08 14:11:41,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475711346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 14:11:41,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 14:11:41,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 14:11:41,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505262479] [2024-11-08 14:11:41,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:11:41,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:11:41,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:11:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 14:11:41,627 INFO L87 Difference]: Start difference. First operand 32 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-08 14:11:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:41,674 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2024-11-08 14:11:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:11:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-11-08 14:11:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:41,675 INFO L225 Difference]: With dead ends: 41 [2024-11-08 14:11:41,675 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 14:11:41,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 14:11:41,677 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:41,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:11:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 14:11:41,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-08 14:11:41,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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) [2024-11-08 14:11:41,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2024-11-08 14:11:41,684 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15 [2024-11-08 14:11:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:41,685 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2024-11-08 14:11:41,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-08 14:11:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2024-11-08 14:11:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 14:11:41,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:41,686 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:41,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 14:11:41,686 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:41,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:41,687 INFO L85 PathProgramCache]: Analyzing trace with hash 121782348, now seen corresponding path program 1 times [2024-11-08 14:11:41,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:41,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960611646] [2024-11-08 14:11:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:41,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:41,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:41,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960611646] [2024-11-08 14:11:41,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960611646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:41,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676071042] [2024-11-08 14:11:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:41,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:41,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:41,787 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) [2024-11-08 14:11:41,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 14:11:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:41,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 14:11:41,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:41,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:41,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676071042] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:41,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-08 14:11:41,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 8 [2024-11-08 14:11:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627044323] [2024-11-08 14:11:41,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 14:11:41,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 14:11:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 14:11:41,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:11:41,968 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-08 14:11:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:42,008 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2024-11-08 14:11:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 14:11:42,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-11-08 14:11:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:42,010 INFO L225 Difference]: With dead ends: 35 [2024-11-08 14:11:42,010 INFO L226 Difference]: Without dead ends: 25 [2024-11-08 14:11:42,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:11:42,011 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:42,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:11:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-08 14:11:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-08 14:11:42,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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) [2024-11-08 14:11:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2024-11-08 14:11:42,022 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 15 [2024-11-08 14:11:42,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:42,023 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2024-11-08 14:11:42,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2024-11-08 14:11:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2024-11-08 14:11:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 14:11:42,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:42,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:42,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 14:11:42,226 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,SelfDestructingSolverStorable5 [2024-11-08 14:11:42,227 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:42,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:42,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1019268824, now seen corresponding path program 1 times [2024-11-08 14:11:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:42,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974422850] [2024-11-08 14:11:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:42,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:11:42,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:42,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974422850] [2024-11-08 14:11:42,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974422850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:42,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723634529] [2024-11-08 14:11:42,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:42,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:42,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:42,322 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) [2024-11-08 14:11:42,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 14:11:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:42,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 14:11:42,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:42,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 14:11:42,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723634529] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:42,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:42,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 10 [2024-11-08 14:11:42,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773782198] [2024-11-08 14:11:42,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:42,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 14:11:42,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 14:11:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:11:42,501 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2024-11-08 14:11:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:42,692 INFO L93 Difference]: Finished difference Result 90 states and 143 transitions. [2024-11-08 14:11:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 14:11:42,693 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 16 [2024-11-08 14:11:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:42,695 INFO L225 Difference]: With dead ends: 90 [2024-11-08 14:11:42,695 INFO L226 Difference]: Without dead ends: 73 [2024-11-08 14:11:42,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:11:42,696 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:42,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 80 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:11:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-08 14:11:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 53. [2024-11-08 14:11:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 52 states have internal predecessors, (79), 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) [2024-11-08 14:11:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2024-11-08 14:11:42,729 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 16 [2024-11-08 14:11:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:42,730 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2024-11-08 14:11:42,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2024-11-08 14:11:42,730 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2024-11-08 14:11:42,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 14:11:42,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:42,731 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:42,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 14:11:42,931 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,SelfDestructingSolverStorable6 [2024-11-08 14:11:42,932 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:42,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1475655800, now seen corresponding path program 1 times [2024-11-08 14:11:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:42,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467275896] [2024-11-08 14:11:42,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:43,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:43,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467275896] [2024-11-08 14:11:43,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467275896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:43,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297926867] [2024-11-08 14:11:43,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:43,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:43,025 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) [2024-11-08 14:11:43,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 14:11:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:43,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 14:11:43,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:11:43,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:11:43,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297926867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:43,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:43,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-08 14:11:43,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359442970] [2024-11-08 14:11:43,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:43,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:11:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:43,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:11:43,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:11:43,136 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-08 14:11:43,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:43,246 INFO L93 Difference]: Finished difference Result 169 states and 259 transitions. [2024-11-08 14:11:43,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:11:43,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 16 [2024-11-08 14:11:43,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:43,248 INFO L225 Difference]: With dead ends: 169 [2024-11-08 14:11:43,248 INFO L226 Difference]: Without dead ends: 146 [2024-11-08 14:11:43,248 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 14:11:43,249 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:43,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 53 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:11:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-08 14:11:43,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 83. [2024-11-08 14:11:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.5) internal successors, (123), 82 states have internal predecessors, (123), 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) [2024-11-08 14:11:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 123 transitions. [2024-11-08 14:11:43,276 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 123 transitions. Word has length 16 [2024-11-08 14:11:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:43,277 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 123 transitions. [2024-11-08 14:11:43,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-08 14:11:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 123 transitions. [2024-11-08 14:11:43,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 14:11:43,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:43,278 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:43,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 14:11:43,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:43,479 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:43,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2038983293, now seen corresponding path program 1 times [2024-11-08 14:11:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:43,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217608227] [2024-11-08 14:11:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:43,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:43,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:43,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217608227] [2024-11-08 14:11:43,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217608227] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:43,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597607028] [2024-11-08 14:11:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:43,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:43,595 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:43,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 14:11:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:43,643 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 14:11:43,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:43,668 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:43,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597607028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:43,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:43,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-08 14:11:43,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176509311] [2024-11-08 14:11:43,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:43,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 14:11:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 14:11:43,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 14:11:43,741 INFO L87 Difference]: Start difference. First operand 83 states and 123 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-08 14:11:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:44,063 INFO L93 Difference]: Finished difference Result 157 states and 234 transitions. [2024-11-08 14:11:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 14:11:44,064 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 17 [2024-11-08 14:11:44,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:44,065 INFO L225 Difference]: With dead ends: 157 [2024-11-08 14:11:44,065 INFO L226 Difference]: Without dead ends: 123 [2024-11-08 14:11:44,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:11:44,066 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:44,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 54 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:11:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-08 14:11:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 102. [2024-11-08 14:11:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4455445544554455) internal successors, (146), 101 states have internal predecessors, (146), 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) [2024-11-08 14:11:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2024-11-08 14:11:44,109 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 17 [2024-11-08 14:11:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:44,109 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2024-11-08 14:11:44,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2024-11-08 14:11:44,109 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2024-11-08 14:11:44,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 14:11:44,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:44,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:44,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 14:11:44,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:44,315 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:44,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:44,316 INFO L85 PathProgramCache]: Analyzing trace with hash 188466470, now seen corresponding path program 1 times [2024-11-08 14:11:44,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:44,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840702235] [2024-11-08 14:11:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:44,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840702235] [2024-11-08 14:11:44,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840702235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:44,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979532459] [2024-11-08 14:11:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:44,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:44,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:44,482 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:44,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 14:11:44,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:44,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 14:11:44,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:44,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979532459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:44,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:44,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-08 14:11:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615889652] [2024-11-08 14:11:44,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:44,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 14:11:44,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:44,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 14:11:44,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:11:44,639 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-08 14:11:44,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:44,711 INFO L93 Difference]: Finished difference Result 131 states and 188 transitions. [2024-11-08 14:11:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 14:11:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 18 [2024-11-08 14:11:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:44,712 INFO L225 Difference]: With dead ends: 131 [2024-11-08 14:11:44,712 INFO L226 Difference]: Without dead ends: 116 [2024-11-08 14:11:44,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 14:11:44,713 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:44,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 14:11:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-08 14:11:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2024-11-08 14:11:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.4948453608247423) internal successors, (145), 97 states have internal predecessors, (145), 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) [2024-11-08 14:11:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 145 transitions. [2024-11-08 14:11:44,739 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 145 transitions. Word has length 18 [2024-11-08 14:11:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:44,739 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 145 transitions. [2024-11-08 14:11:44,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-08 14:11:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 145 transitions. [2024-11-08 14:11:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 14:11:44,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:44,741 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:44,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 14:11:44,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 14:11:44,942 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:44,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 91906733, now seen corresponding path program 2 times [2024-11-08 14:11:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:44,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618127399] [2024-11-08 14:11:44,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:44,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:45,025 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 14:11:45,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618127399] [2024-11-08 14:11:45,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618127399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:45,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538748884] [2024-11-08 14:11:45,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:11:45,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:45,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:45,028 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:45,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 14:11:45,073 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:11:45,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:45,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 14:11:45,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:45,105 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 14:11:45,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 14:11:45,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538748884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:45,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:45,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-08 14:11:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339782668] [2024-11-08 14:11:45,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:45,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 14:11:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:45,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 14:11:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-08 14:11:45,175 INFO L87 Difference]: Start difference. First operand 98 states and 145 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2024-11-08 14:11:45,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:45,339 INFO L93 Difference]: Finished difference Result 138 states and 205 transitions. [2024-11-08 14:11:45,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 14:11:45,339 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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 19 [2024-11-08 14:11:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:45,340 INFO L225 Difference]: With dead ends: 138 [2024-11-08 14:11:45,341 INFO L226 Difference]: Without dead ends: 93 [2024-11-08 14:11:45,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:11:45,342 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:45,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 79 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:11:45,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-08 14:11:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-08 14:11:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4761904761904763) internal successors, (124), 84 states have internal predecessors, (124), 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) [2024-11-08 14:11:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 124 transitions. [2024-11-08 14:11:45,379 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 124 transitions. Word has length 19 [2024-11-08 14:11:45,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:45,381 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 124 transitions. [2024-11-08 14:11:45,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 states have internal predecessors, (29), 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) [2024-11-08 14:11:45,381 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 124 transitions. [2024-11-08 14:11:45,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 14:11:45,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:45,384 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:45,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:45,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:45,585 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:45,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash -139194169, now seen corresponding path program 3 times [2024-11-08 14:11:45,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:45,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778577412] [2024-11-08 14:11:45,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:45,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:45,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778577412] [2024-11-08 14:11:45,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778577412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:45,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967569951] [2024-11-08 14:11:45,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:11:45,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:45,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:45,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:45,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 14:11:45,771 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 14:11:45,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:45,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 14:11:45,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:45,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:11:45,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:11:45,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967569951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:45,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:45,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 14 [2024-11-08 14:11:45,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211325516] [2024-11-08 14:11:45,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:45,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 14:11:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:45,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 14:11:45,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-08 14:11:45,970 INFO L87 Difference]: Start difference. First operand 85 states and 124 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2024-11-08 14:11:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:46,348 INFO L93 Difference]: Finished difference Result 140 states and 206 transitions. [2024-11-08 14:11:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 14:11:46,348 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 20 [2024-11-08 14:11:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:46,349 INFO L225 Difference]: With dead ends: 140 [2024-11-08 14:11:46,349 INFO L226 Difference]: Without dead ends: 85 [2024-11-08 14:11:46,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2024-11-08 14:11:46,350 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:46,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 130 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:11:46,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-08 14:11:46,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2024-11-08 14:11:46,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 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) [2024-11-08 14:11:46,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2024-11-08 14:11:46,369 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 20 [2024-11-08 14:11:46,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:46,369 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2024-11-08 14:11:46,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2024-11-08 14:11:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2024-11-08 14:11:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 14:11:46,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:46,370 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:46,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 14:11:46,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:46,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:46,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1948553864, now seen corresponding path program 4 times [2024-11-08 14:11:46,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:46,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210764394] [2024-11-08 14:11:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:46,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:46,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 14:11:46,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210764394] [2024-11-08 14:11:46,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210764394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:46,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909648510] [2024-11-08 14:11:46,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:11:46,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:46,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:46,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:46,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 14:11:46,743 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:11:46,744 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:46,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 14:11:46,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:46,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 14:11:46,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:46,933 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 14:11:46,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909648510] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:46,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:46,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 7] total 17 [2024-11-08 14:11:46,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643842077] [2024-11-08 14:11:46,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:46,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 14:11:46,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 14:11:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 14:11:46,936 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2024-11-08 14:11:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:47,452 INFO L93 Difference]: Finished difference Result 168 states and 254 transitions. [2024-11-08 14:11:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 14:11:47,453 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 22 [2024-11-08 14:11:47,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:47,454 INFO L225 Difference]: With dead ends: 168 [2024-11-08 14:11:47,454 INFO L226 Difference]: Without dead ends: 134 [2024-11-08 14:11:47,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=729, Unknown=0, NotChecked=0, Total=930 [2024-11-08 14:11:47,455 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:47,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 131 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:11:47,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-08 14:11:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 103. [2024-11-08 14:11:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 102 states have internal predecessors, (147), 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) [2024-11-08 14:11:47,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 147 transitions. [2024-11-08 14:11:47,483 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 147 transitions. Word has length 22 [2024-11-08 14:11:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:47,483 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 147 transitions. [2024-11-08 14:11:47,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2024-11-08 14:11:47,484 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 147 transitions. [2024-11-08 14:11:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 14:11:47,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:47,484 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:47,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:47,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 14:11:47,685 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:47,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1316100797, now seen corresponding path program 5 times [2024-11-08 14:11:47,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:47,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123144439] [2024-11-08 14:11:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:47,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:47,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:47,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123144439] [2024-11-08 14:11:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123144439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266957013] [2024-11-08 14:11:47,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:11:47,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:47,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:47,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:47,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 14:11:47,933 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-08 14:11:47,933 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:47,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 14:11:47,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 14:11:48,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 14:11:48,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266957013] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:48,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:48,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2024-11-08 14:11:48,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043984049] [2024-11-08 14:11:48,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:48,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 14:11:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:48,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 14:11:48,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-08 14:11:48,282 INFO L87 Difference]: Start difference. First operand 103 states and 147 transitions. Second operand has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2024-11-08 14:11:49,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:49,820 INFO L93 Difference]: Finished difference Result 205 states and 313 transitions. [2024-11-08 14:11:49,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-08 14:11:49,820 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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 23 [2024-11-08 14:11:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:49,821 INFO L225 Difference]: With dead ends: 205 [2024-11-08 14:11:49,821 INFO L226 Difference]: Without dead ends: 161 [2024-11-08 14:11:49,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=825, Invalid=3465, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 14:11:49,824 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 93 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:49,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 202 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:11:49,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-08 14:11:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 108. [2024-11-08 14:11:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 107 states have internal predecessors, (147), 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) [2024-11-08 14:11:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 147 transitions. [2024-11-08 14:11:49,853 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 147 transitions. Word has length 23 [2024-11-08 14:11:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:49,853 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 147 transitions. [2024-11-08 14:11:49,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 24 states have internal predecessors, (46), 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) [2024-11-08 14:11:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 147 transitions. [2024-11-08 14:11:49,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 14:11:49,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:49,855 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:49,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 14:11:50,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 14:11:50,060 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:50,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:50,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1491919202, now seen corresponding path program 1 times [2024-11-08 14:11:50,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:50,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67121074] [2024-11-08 14:11:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:50,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 14:11:50,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:50,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67121074] [2024-11-08 14:11:50,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67121074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:50,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229530884] [2024-11-08 14:11:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:50,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:50,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:50,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:50,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 14:11:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:50,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 14:11:50,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 14:11:50,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 14:11:50,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229530884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:50,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:50,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 8] total 20 [2024-11-08 14:11:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161004763] [2024-11-08 14:11:50,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:50,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 14:11:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 14:11:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:11:50,435 INFO L87 Difference]: Start difference. First operand 108 states and 147 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2024-11-08 14:11:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:51,136 INFO L93 Difference]: Finished difference Result 218 states and 320 transitions. [2024-11-08 14:11:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 14:11:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 23 [2024-11-08 14:11:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:51,138 INFO L225 Difference]: With dead ends: 218 [2024-11-08 14:11:51,138 INFO L226 Difference]: Without dead ends: 169 [2024-11-08 14:11:51,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=317, Invalid=1323, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 14:11:51,140 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:51,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 170 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:11:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-08 14:11:51,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 138. [2024-11-08 14:11:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.3795620437956204) internal successors, (189), 137 states have internal predecessors, (189), 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) [2024-11-08 14:11:51,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 189 transitions. [2024-11-08 14:11:51,175 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 189 transitions. Word has length 23 [2024-11-08 14:11:51,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:51,176 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 189 transitions. [2024-11-08 14:11:51,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2024-11-08 14:11:51,176 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 189 transitions. [2024-11-08 14:11:51,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 14:11:51,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:51,177 INFO L215 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:51,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:51,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 14:11:51,378 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:51,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 257480285, now seen corresponding path program 2 times [2024-11-08 14:11:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:51,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777773543] [2024-11-08 14:11:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:51,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:11:51,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:51,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777773543] [2024-11-08 14:11:51,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777773543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:51,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424276389] [2024-11-08 14:11:51,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:11:51,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:51,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:51,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:51,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 14:11:51,551 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:11:51,552 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:51,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 14:11:51,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:51,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 14:11:51,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424276389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:51,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:51,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 7] total 18 [2024-11-08 14:11:51,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208330691] [2024-11-08 14:11:51,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:51,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 14:11:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:51,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 14:11:51,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:11:51,718 INFO L87 Difference]: Start difference. First operand 138 states and 189 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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) [2024-11-08 14:11:51,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:51,997 INFO L93 Difference]: Finished difference Result 328 states and 487 transitions. [2024-11-08 14:11:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 14:11:51,997 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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 23 [2024-11-08 14:11:51,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:51,999 INFO L225 Difference]: With dead ends: 328 [2024-11-08 14:11:51,999 INFO L226 Difference]: Without dead ends: 261 [2024-11-08 14:11:52,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=295, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:11:52,000 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 95 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:52,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 184 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:11:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-08 14:11:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 189. [2024-11-08 14:11:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.372340425531915) internal successors, (258), 188 states have internal predecessors, (258), 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) [2024-11-08 14:11:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 258 transitions. [2024-11-08 14:11:52,050 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 258 transitions. Word has length 23 [2024-11-08 14:11:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:52,051 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 258 transitions. [2024-11-08 14:11:52,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 18 states have internal predecessors, (49), 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) [2024-11-08 14:11:52,051 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 258 transitions. [2024-11-08 14:11:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-08 14:11:52,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:52,052 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:52,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:52,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 14:11:52,253 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:52,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:52,253 INFO L85 PathProgramCache]: Analyzing trace with hash -235040834, now seen corresponding path program 2 times [2024-11-08 14:11:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:52,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450123874] [2024-11-08 14:11:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 14:11:52,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:52,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450123874] [2024-11-08 14:11:52,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450123874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:52,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487252379] [2024-11-08 14:11:52,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:11:52,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:52,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:52,434 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:52,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 14:11:52,486 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:11:52,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:52,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 14:11:52,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:11:52,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:11:52,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487252379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:52,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:52,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 23 [2024-11-08 14:11:52,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250580462] [2024-11-08 14:11:52,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:52,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 14:11:52,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:52,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 14:11:52,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2024-11-08 14:11:52,689 INFO L87 Difference]: Start difference. First operand 189 states and 258 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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) [2024-11-08 14:11:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:54,088 INFO L93 Difference]: Finished difference Result 676 states and 994 transitions. [2024-11-08 14:11:54,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 14:11:54,089 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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 25 [2024-11-08 14:11:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:54,092 INFO L225 Difference]: With dead ends: 676 [2024-11-08 14:11:54,092 INFO L226 Difference]: Without dead ends: 580 [2024-11-08 14:11:54,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=912, Invalid=3644, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 14:11:54,094 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 210 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:54,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 188 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 14:11:54,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-08 14:11:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 220. [2024-11-08 14:11:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.360730593607306) internal successors, (298), 219 states have internal predecessors, (298), 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) [2024-11-08 14:11:54,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 298 transitions. [2024-11-08 14:11:54,162 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 298 transitions. Word has length 25 [2024-11-08 14:11:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:54,162 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 298 transitions. [2024-11-08 14:11:54,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 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) [2024-11-08 14:11:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 298 transitions. [2024-11-08 14:11:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 14:11:54,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:54,163 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:54,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:54,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 14:11:54,364 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:54,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:54,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1802339079, now seen corresponding path program 2 times [2024-11-08 14:11:54,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983957661] [2024-11-08 14:11:54,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 14:11:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983957661] [2024-11-08 14:11:54,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983957661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:54,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503531403] [2024-11-08 14:11:54,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:11:54,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:54,522 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:54,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 14:11:54,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:11:54,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:54,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 14:11:54,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 14:11:54,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-08 14:11:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503531403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:54,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:54,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 5] total 15 [2024-11-08 14:11:54,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113065303] [2024-11-08 14:11:54,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:54,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 14:11:54,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:54,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 14:11:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-08 14:11:54,671 INFO L87 Difference]: Start difference. First operand 220 states and 298 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 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) [2024-11-08 14:11:55,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:55,048 INFO L93 Difference]: Finished difference Result 508 states and 749 transitions. [2024-11-08 14:11:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 14:11:55,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 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 26 [2024-11-08 14:11:55,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:55,051 INFO L225 Difference]: With dead ends: 508 [2024-11-08 14:11:55,051 INFO L226 Difference]: Without dead ends: 445 [2024-11-08 14:11:55,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-11-08 14:11:55,052 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 73 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:55,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 292 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:11:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-08 14:11:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 276. [2024-11-08 14:11:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.3636363636363635) internal successors, (375), 275 states have internal predecessors, (375), 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) [2024-11-08 14:11:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 375 transitions. [2024-11-08 14:11:55,138 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 375 transitions. Word has length 26 [2024-11-08 14:11:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:55,138 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 375 transitions. [2024-11-08 14:11:55,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 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) [2024-11-08 14:11:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 375 transitions. [2024-11-08 14:11:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 14:11:55,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:55,139 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:55,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 14:11:55,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 14:11:55,340 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:55,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:55,340 INFO L85 PathProgramCache]: Analyzing trace with hash -404039911, now seen corresponding path program 6 times [2024-11-08 14:11:55,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:55,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710571065] [2024-11-08 14:11:55,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:55,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:55,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:11:55,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:55,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710571065] [2024-11-08 14:11:55,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710571065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:55,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997874701] [2024-11-08 14:11:55,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:11:55,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:55,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:55,496 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:55,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 14:11:55,553 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 14:11:55,553 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:55,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 14:11:55,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:11:55,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:11:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997874701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:55,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:55,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 20 [2024-11-08 14:11:55,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915457811] [2024-11-08 14:11:55,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:55,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 14:11:55,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:55,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 14:11:55,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:11:55,698 INFO L87 Difference]: Start difference. First operand 276 states and 375 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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) [2024-11-08 14:11:56,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:56,194 INFO L93 Difference]: Finished difference Result 365 states and 491 transitions. [2024-11-08 14:11:56,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 14:11:56,194 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 28 [2024-11-08 14:11:56,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:56,196 INFO L225 Difference]: With dead ends: 365 [2024-11-08 14:11:56,196 INFO L226 Difference]: Without dead ends: 299 [2024-11-08 14:11:56,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 14:11:56,197 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 51 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:56,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 286 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 14:11:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-08 14:11:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 260. [2024-11-08 14:11:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.3667953667953667) internal successors, (354), 259 states have internal predecessors, (354), 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) [2024-11-08 14:11:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 354 transitions. [2024-11-08 14:11:56,273 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 354 transitions. Word has length 28 [2024-11-08 14:11:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:56,274 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 354 transitions. [2024-11-08 14:11:56,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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) [2024-11-08 14:11:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 354 transitions. [2024-11-08 14:11:56,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:11:56,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:56,274 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:56,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:56,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:56,479 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:56,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:56,479 INFO L85 PathProgramCache]: Analyzing trace with hash -20997379, now seen corresponding path program 7 times [2024-11-08 14:11:56,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:56,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342798460] [2024-11-08 14:11:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:56,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:11:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342798460] [2024-11-08 14:11:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342798460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753166760] [2024-11-08 14:11:56,707 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:11:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:56,709 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:56,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 14:11:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:56,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 14:11:56,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 14:11:56,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 14:11:57,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753166760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:57,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:57,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 27 [2024-11-08 14:11:57,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981070903] [2024-11-08 14:11:57,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:57,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 14:11:57,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 14:11:57,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-11-08 14:11:57,041 INFO L87 Difference]: Start difference. First operand 260 states and 354 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 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) [2024-11-08 14:11:58,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:11:58,506 INFO L93 Difference]: Finished difference Result 591 states and 909 transitions. [2024-11-08 14:11:58,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-08 14:11:58,506 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 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 29 [2024-11-08 14:11:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:11:58,508 INFO L225 Difference]: With dead ends: 591 [2024-11-08 14:11:58,508 INFO L226 Difference]: Without dead ends: 510 [2024-11-08 14:11:58,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 981 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=941, Invalid=3751, Unknown=0, NotChecked=0, Total=4692 [2024-11-08 14:11:58,510 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 211 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 14:11:58,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 285 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 14:11:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-08 14:11:58,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 354. [2024-11-08 14:11:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 1.3597733711048159) internal successors, (480), 353 states have internal predecessors, (480), 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) [2024-11-08 14:11:58,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 480 transitions. [2024-11-08 14:11:58,631 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 480 transitions. Word has length 29 [2024-11-08 14:11:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:11:58,631 INFO L471 AbstractCegarLoop]: Abstraction has 354 states and 480 transitions. [2024-11-08 14:11:58,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 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) [2024-11-08 14:11:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 480 transitions. [2024-11-08 14:11:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 14:11:58,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:11:58,632 INFO L215 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:11:58,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 14:11:58,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:58,836 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:11:58,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:11:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1268860428, now seen corresponding path program 3 times [2024-11-08 14:11:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:11:58,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872820820] [2024-11-08 14:11:58,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:11:58,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:11:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:11:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:11:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:11:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872820820] [2024-11-08 14:11:59,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872820820] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:11:59,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302347889] [2024-11-08 14:11:59,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:11:59,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:11:59,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:11:59,014 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:11:59,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 14:11:59,056 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:11:59,056 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:11:59,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 14:11:59,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:11:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 14:11:59,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:11:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-08 14:11:59,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302347889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:11:59,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:11:59,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 24 [2024-11-08 14:11:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629057171] [2024-11-08 14:11:59,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:11:59,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 14:11:59,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:11:59,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 14:11:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2024-11-08 14:11:59,269 INFO L87 Difference]: Start difference. First operand 354 states and 480 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2024-11-08 14:12:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:00,311 INFO L93 Difference]: Finished difference Result 691 states and 985 transitions. [2024-11-08 14:12:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 14:12:00,312 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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 29 [2024-11-08 14:12:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:00,314 INFO L225 Difference]: With dead ends: 691 [2024-11-08 14:12:00,314 INFO L226 Difference]: Without dead ends: 535 [2024-11-08 14:12:00,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=574, Invalid=2732, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 14:12:00,316 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 205 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:00,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 360 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:12:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-08 14:12:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 386. [2024-11-08 14:12:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.3688311688311687) internal successors, (527), 385 states have internal predecessors, (527), 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) [2024-11-08 14:12:00,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 527 transitions. [2024-11-08 14:12:00,470 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 527 transitions. Word has length 29 [2024-11-08 14:12:00,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:00,470 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 527 transitions. [2024-11-08 14:12:00,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2024-11-08 14:12:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 527 transitions. [2024-11-08 14:12:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 14:12:00,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:00,471 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:00,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:00,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:00,676 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:00,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:00,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1004492410, now seen corresponding path program 3 times [2024-11-08 14:12:00,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:00,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038195950] [2024-11-08 14:12:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:00,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:12:00,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:00,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038195950] [2024-11-08 14:12:00,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038195950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:00,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259775054] [2024-11-08 14:12:00,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:12:00,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:00,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:00,897 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:00,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 14:12:00,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:12:00,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:00,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 14:12:00,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:12:00,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-08 14:12:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259775054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:01,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:01,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-08 14:12:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470949689] [2024-11-08 14:12:01,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:01,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 14:12:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 14:12:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:12:01,042 INFO L87 Difference]: Start difference. First operand 386 states and 527 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2024-11-08 14:12:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:01,345 INFO L93 Difference]: Finished difference Result 533 states and 714 transitions. [2024-11-08 14:12:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 14:12:01,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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 30 [2024-11-08 14:12:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:01,348 INFO L225 Difference]: With dead ends: 533 [2024-11-08 14:12:01,349 INFO L226 Difference]: Without dead ends: 508 [2024-11-08 14:12:01,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 14:12:01,349 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:01,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:12:01,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-08 14:12:01,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 393. [2024-11-08 14:12:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.3954081632653061) internal successors, (547), 392 states have internal predecessors, (547), 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) [2024-11-08 14:12:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 547 transitions. [2024-11-08 14:12:01,498 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 547 transitions. Word has length 30 [2024-11-08 14:12:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:01,498 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 547 transitions. [2024-11-08 14:12:01,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 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) [2024-11-08 14:12:01,498 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 547 transitions. [2024-11-08 14:12:01,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-08 14:12:01,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:01,499 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:01,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:01,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:01,700 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:01,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:01,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1872604873, now seen corresponding path program 4 times [2024-11-08 14:12:01,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:01,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023848775] [2024-11-08 14:12:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:01,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 14:12:01,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:01,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023848775] [2024-11-08 14:12:01,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023848775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:01,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081896213] [2024-11-08 14:12:01,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:12:01,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:01,895 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:01,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 14:12:01,940 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:12:01,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:01,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 14:12:01,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:01,977 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 14:12:01,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 14:12:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081896213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:02,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:02,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 6] total 19 [2024-11-08 14:12:02,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691928047] [2024-11-08 14:12:02,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:02,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 14:12:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:02,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 14:12:02,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-08 14:12:02,047 INFO L87 Difference]: Start difference. First operand 393 states and 547 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 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) [2024-11-08 14:12:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:02,777 INFO L93 Difference]: Finished difference Result 867 states and 1264 transitions. [2024-11-08 14:12:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 14:12:02,778 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 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 32 [2024-11-08 14:12:02,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:02,782 INFO L225 Difference]: With dead ends: 867 [2024-11-08 14:12:02,782 INFO L226 Difference]: Without dead ends: 731 [2024-11-08 14:12:02,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 14:12:02,783 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 167 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:02,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 428 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 14:12:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2024-11-08 14:12:03,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 460. [2024-11-08 14:12:03,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.3725490196078431) internal successors, (630), 459 states have internal predecessors, (630), 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) [2024-11-08 14:12:03,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 630 transitions. [2024-11-08 14:12:03,042 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 630 transitions. Word has length 32 [2024-11-08 14:12:03,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:03,042 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 630 transitions. [2024-11-08 14:12:03,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 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) [2024-11-08 14:12:03,043 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 630 transitions. [2024-11-08 14:12:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 14:12:03,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:03,044 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:03,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 14:12:03,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:03,244 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:03,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2140726323, now seen corresponding path program 4 times [2024-11-08 14:12:03,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64785034] [2024-11-08 14:12:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 14:12:03,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:03,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64785034] [2024-11-08 14:12:03,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64785034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:03,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700387719] [2024-11-08 14:12:03,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:12:03,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:03,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:03,444 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:03,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 14:12:03,492 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:12:03,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:03,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 14:12:03,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:12:03,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:12:03,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700387719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:03,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:03,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 21 [2024-11-08 14:12:03,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144492293] [2024-11-08 14:12:03,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:03,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 14:12:03,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 14:12:03,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:12:03,802 INFO L87 Difference]: Start difference. First operand 460 states and 630 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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) [2024-11-08 14:12:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:07,916 INFO L93 Difference]: Finished difference Result 1069 states and 1416 transitions. [2024-11-08 14:12:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2024-11-08 14:12:07,916 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 33 [2024-11-08 14:12:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:07,920 INFO L225 Difference]: With dead ends: 1069 [2024-11-08 14:12:07,921 INFO L226 Difference]: Without dead ends: 962 [2024-11-08 14:12:07,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 58 SyntacticMatches, 10 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8816 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1591, Invalid=21971, Unknown=0, NotChecked=0, Total=23562 [2024-11-08 14:12:07,926 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 248 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 1757 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:07,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 366 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1757 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 14:12:07,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-08 14:12:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 504. [2024-11-08 14:12:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 1.3538767395626243) internal successors, (681), 503 states have internal predecessors, (681), 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) [2024-11-08 14:12:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 681 transitions. [2024-11-08 14:12:08,188 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 681 transitions. Word has length 33 [2024-11-08 14:12:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:08,188 INFO L471 AbstractCegarLoop]: Abstraction has 504 states and 681 transitions. [2024-11-08 14:12:08,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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) [2024-11-08 14:12:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 681 transitions. [2024-11-08 14:12:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 14:12:08,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:08,190 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:08,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:08,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:08,390 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:08,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1627323367, now seen corresponding path program 5 times [2024-11-08 14:12:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756292188] [2024-11-08 14:12:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:12:08,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:08,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756292188] [2024-11-08 14:12:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756292188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:08,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555849146] [2024-11-08 14:12:08,650 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:12:08,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:08,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:08,652 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:08,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 14:12:08,789 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 14:12:08,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:08,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-08 14:12:08,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:12:08,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-08 14:12:09,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555849146] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:09,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:09,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 15] total 39 [2024-11-08 14:12:09,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126986800] [2024-11-08 14:12:09,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:09,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 14:12:09,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:09,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 14:12:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 14:12:09,392 INFO L87 Difference]: Start difference. First operand 504 states and 681 transitions. Second operand has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 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) [2024-11-08 14:12:11,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:11,407 INFO L93 Difference]: Finished difference Result 823 states and 1164 transitions. [2024-11-08 14:12:11,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-08 14:12:11,407 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 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 34 [2024-11-08 14:12:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:11,410 INFO L225 Difference]: With dead ends: 823 [2024-11-08 14:12:11,410 INFO L226 Difference]: Without dead ends: 721 [2024-11-08 14:12:11,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1960, Invalid=6970, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 14:12:11,412 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 168 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:11,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 355 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 14:12:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2024-11-08 14:12:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 559. [2024-11-08 14:12:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.3476702508960574) internal successors, (752), 558 states have internal predecessors, (752), 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) [2024-11-08 14:12:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 752 transitions. [2024-11-08 14:12:11,732 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 752 transitions. Word has length 34 [2024-11-08 14:12:11,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:11,732 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 752 transitions. [2024-11-08 14:12:11,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.794871794871795) internal successors, (70), 39 states have internal predecessors, (70), 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) [2024-11-08 14:12:11,732 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 752 transitions. [2024-11-08 14:12:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 14:12:11,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:11,733 INFO L215 NwaCegarLoop]: trace histogram [9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:11,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-08 14:12:11,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 14:12:11,938 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:11,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1934378598, now seen corresponding path program 6 times [2024-11-08 14:12:11,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:11,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073767472] [2024-11-08 14:12:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-08 14:12:12,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:12,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073767472] [2024-11-08 14:12:12,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073767472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:12,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197361347] [2024-11-08 14:12:12,171 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:12:12,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:12,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:12,173 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:12,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 14:12:12,272 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-08 14:12:12,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:12,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 14:12:12,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-08 14:12:12,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-08 14:12:12,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197361347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:12,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:12,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 6, 6] total 20 [2024-11-08 14:12:12,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608798708] [2024-11-08 14:12:12,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:12,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 14:12:12,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 14:12:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-08 14:12:12,513 INFO L87 Difference]: Start difference. First operand 559 states and 752 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2024-11-08 14:12:13,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:13,791 INFO L93 Difference]: Finished difference Result 1151 states and 1633 transitions. [2024-11-08 14:12:13,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 14:12:13,791 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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 34 [2024-11-08 14:12:13,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:13,794 INFO L225 Difference]: With dead ends: 1151 [2024-11-08 14:12:13,794 INFO L226 Difference]: Without dead ends: 935 [2024-11-08 14:12:13,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=987, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 14:12:13,796 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 134 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:13,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 610 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:12:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2024-11-08 14:12:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 591. [2024-11-08 14:12:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 1.3542372881355933) internal successors, (799), 590 states have internal predecessors, (799), 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) [2024-11-08 14:12:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 799 transitions. [2024-11-08 14:12:14,099 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 799 transitions. Word has length 34 [2024-11-08 14:12:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:14,099 INFO L471 AbstractCegarLoop]: Abstraction has 591 states and 799 transitions. [2024-11-08 14:12:14,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 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) [2024-11-08 14:12:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 799 transitions. [2024-11-08 14:12:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 14:12:14,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:14,100 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:14,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:14,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 14:12:14,300 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:14,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1563221799, now seen corresponding path program 7 times [2024-11-08 14:12:14,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:14,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432754505] [2024-11-08 14:12:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:14,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 14:12:14,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432754505] [2024-11-08 14:12:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432754505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:14,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605831944] [2024-11-08 14:12:14,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:12:14,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:14,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:14,545 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:14,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 14:12:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:14,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-08 14:12:14,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 14:12:14,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 14:12:14,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605831944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:14,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:14,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-11-08 14:12:14,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883107531] [2024-11-08 14:12:14,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:14,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 14:12:14,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:14,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 14:12:14,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 14:12:14,806 INFO L87 Difference]: Start difference. First operand 591 states and 799 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2024-11-08 14:12:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:15,506 INFO L93 Difference]: Finished difference Result 813 states and 1065 transitions. [2024-11-08 14:12:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 14:12:15,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 36 [2024-11-08 14:12:15,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:15,509 INFO L225 Difference]: With dead ends: 813 [2024-11-08 14:12:15,509 INFO L226 Difference]: Without dead ends: 783 [2024-11-08 14:12:15,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 65 SyntacticMatches, 18 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 14:12:15,509 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:15,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 155 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:12:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2024-11-08 14:12:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 598. [2024-11-08 14:12:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 1.3634840871021776) internal successors, (814), 597 states have internal predecessors, (814), 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) [2024-11-08 14:12:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 814 transitions. [2024-11-08 14:12:15,818 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 814 transitions. Word has length 36 [2024-11-08 14:12:15,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:15,818 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 814 transitions. [2024-11-08 14:12:15,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2024-11-08 14:12:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 814 transitions. [2024-11-08 14:12:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 14:12:15,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:15,820 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:15,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:16,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 14:12:16,020 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:16,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash -922807928, now seen corresponding path program 8 times [2024-11-08 14:12:16,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:16,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934584977] [2024-11-08 14:12:16,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:16,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 14:12:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:16,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934584977] [2024-11-08 14:12:16,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934584977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:16,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122305436] [2024-11-08 14:12:16,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 14:12:16,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:16,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:16,286 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:16,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 14:12:16,335 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 14:12:16,335 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:16,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 14:12:16,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:16,412 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 14:12:16,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-08 14:12:16,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122305436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:16,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:16,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 18 [2024-11-08 14:12:16,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904816267] [2024-11-08 14:12:16,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:16,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 14:12:16,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 14:12:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-08 14:12:16,516 INFO L87 Difference]: Start difference. First operand 598 states and 814 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2024-11-08 14:12:21,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 14:12:25,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-08 14:12:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:25,902 INFO L93 Difference]: Finished difference Result 1257 states and 1675 transitions. [2024-11-08 14:12:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-08 14:12:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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 36 [2024-11-08 14:12:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:25,907 INFO L225 Difference]: With dead ends: 1257 [2024-11-08 14:12:25,908 INFO L226 Difference]: Without dead ends: 1139 [2024-11-08 14:12:25,908 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2024-11-08 14:12:25,909 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 87 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 88 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:25,909 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 236 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 317 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2024-11-08 14:12:25,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-11-08 14:12:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 722. [2024-11-08 14:12:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.332871012482663) internal successors, (961), 721 states have internal predecessors, (961), 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) [2024-11-08 14:12:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 961 transitions. [2024-11-08 14:12:26,287 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 961 transitions. Word has length 36 [2024-11-08 14:12:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:26,287 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 961 transitions. [2024-11-08 14:12:26,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2024-11-08 14:12:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 961 transitions. [2024-11-08 14:12:26,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-08 14:12:26,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:26,289 INFO L215 NwaCegarLoop]: trace histogram [10, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:26,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:26,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:26,490 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:26,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1987186775, now seen corresponding path program 9 times [2024-11-08 14:12:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:26,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121798629] [2024-11-08 14:12:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-08 14:12:26,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121798629] [2024-11-08 14:12:26,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121798629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379897184] [2024-11-08 14:12:26,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:12:26,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:26,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:26,746 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:26,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 14:12:26,804 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 14:12:26,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:26,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 14:12:26,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 14:12:26,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 14:12:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379897184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:26,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6, 6] total 21 [2024-11-08 14:12:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576757754] [2024-11-08 14:12:26,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:26,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 14:12:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 14:12:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:12:26,982 INFO L87 Difference]: Start difference. First operand 722 states and 961 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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) [2024-11-08 14:12:28,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:28,262 INFO L93 Difference]: Finished difference Result 1462 states and 2056 transitions. [2024-11-08 14:12:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 14:12:28,263 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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 36 [2024-11-08 14:12:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:28,267 INFO L225 Difference]: With dead ends: 1462 [2024-11-08 14:12:28,267 INFO L226 Difference]: Without dead ends: 1179 [2024-11-08 14:12:28,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=377, Invalid=1105, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 14:12:28,268 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 239 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:28,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 543 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 14:12:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2024-11-08 14:12:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 693. [2024-11-08 14:12:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 1.3511560693641618) internal successors, (935), 692 states have internal predecessors, (935), 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) [2024-11-08 14:12:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 935 transitions. [2024-11-08 14:12:28,667 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 935 transitions. Word has length 36 [2024-11-08 14:12:28,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:28,667 INFO L471 AbstractCegarLoop]: Abstraction has 693 states and 935 transitions. [2024-11-08 14:12:28,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 21 states have internal predecessors, (47), 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) [2024-11-08 14:12:28,668 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 935 transitions. [2024-11-08 14:12:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 14:12:28,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:28,669 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:28,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:28,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 14:12:28,870 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:28,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:28,870 INFO L85 PathProgramCache]: Analyzing trace with hash -513863587, now seen corresponding path program 10 times [2024-11-08 14:12:28,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:28,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130779886] [2024-11-08 14:12:28,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:28,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 14:12:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130779886] [2024-11-08 14:12:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130779886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491156021] [2024-11-08 14:12:29,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 14:12:29,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:29,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:29,199 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:29,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 14:12:29,251 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 14:12:29,251 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:29,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 14:12:29,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 14:12:29,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:29,790 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 14:12:29,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491156021] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:29,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:29,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10, 10] total 27 [2024-11-08 14:12:29,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26163438] [2024-11-08 14:12:29,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:29,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 14:12:29,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:29,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 14:12:29,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=648, Unknown=0, NotChecked=0, Total=702 [2024-11-08 14:12:29,792 INFO L87 Difference]: Start difference. First operand 693 states and 935 transitions. Second operand has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 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) [2024-11-08 14:12:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:41,915 INFO L93 Difference]: Finished difference Result 1640 states and 2182 transitions. [2024-11-08 14:12:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2024-11-08 14:12:41,916 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 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 37 [2024-11-08 14:12:41,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:41,923 INFO L225 Difference]: With dead ends: 1640 [2024-11-08 14:12:41,923 INFO L226 Difference]: Without dead ends: 1470 [2024-11-08 14:12:41,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 64 SyntacticMatches, 14 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36489 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4735, Invalid=81995, Unknown=0, NotChecked=0, Total=86730 [2024-11-08 14:12:41,929 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 422 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 3857 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 4427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 3857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:41,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 265 Invalid, 4427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 3857 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 14:12:41,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2024-11-08 14:12:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 688. [2024-11-08 14:12:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 1.3377001455604076) internal successors, (919), 687 states have internal predecessors, (919), 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) [2024-11-08 14:12:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 919 transitions. [2024-11-08 14:12:42,369 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 919 transitions. Word has length 37 [2024-11-08 14:12:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:42,369 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 919 transitions. [2024-11-08 14:12:42,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.259259259259259) internal successors, (61), 27 states have internal predecessors, (61), 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) [2024-11-08 14:12:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 919 transitions. [2024-11-08 14:12:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-08 14:12:42,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:42,370 INFO L215 NwaCegarLoop]: trace histogram [11, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:42,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 14:12:42,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:42,571 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:42,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1305632020, now seen corresponding path program 5 times [2024-11-08 14:12:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:42,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025982375] [2024-11-08 14:12:42,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-08 14:12:42,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025982375] [2024-11-08 14:12:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025982375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721198727] [2024-11-08 14:12:42,839 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:12:42,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:42,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:42,840 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:42,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 14:12:42,910 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-08 14:12:42,910 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:42,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-08 14:12:42,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 14:12:43,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-08 14:12:43,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721198727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:43,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:43,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 13] total 38 [2024-11-08 14:12:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85837324] [2024-11-08 14:12:43,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:43,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 14:12:43,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 14:12:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 14:12:43,386 INFO L87 Difference]: Start difference. First operand 688 states and 919 transitions. Second operand has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 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) [2024-11-08 14:12:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:45,945 INFO L93 Difference]: Finished difference Result 1308 states and 1811 transitions. [2024-11-08 14:12:45,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-08 14:12:45,946 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 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 37 [2024-11-08 14:12:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:45,949 INFO L225 Difference]: With dead ends: 1308 [2024-11-08 14:12:45,949 INFO L226 Difference]: Without dead ends: 993 [2024-11-08 14:12:45,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1156, Invalid=5650, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 14:12:45,951 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 297 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:45,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 803 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 14:12:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2024-11-08 14:12:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 768. [2024-11-08 14:12:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.318122555410691) internal successors, (1011), 767 states have internal predecessors, (1011), 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) [2024-11-08 14:12:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1011 transitions. [2024-11-08 14:12:46,522 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1011 transitions. Word has length 37 [2024-11-08 14:12:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:46,523 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 1011 transitions. [2024-11-08 14:12:46,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.5263157894736843) internal successors, (58), 38 states have internal predecessors, (58), 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) [2024-11-08 14:12:46,523 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1011 transitions. [2024-11-08 14:12:46,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-08 14:12:46,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:46,525 INFO L215 NwaCegarLoop]: trace histogram [10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:46,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 14:12:46,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-08 14:12:46,725 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:46,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:46,726 INFO L85 PathProgramCache]: Analyzing trace with hash -118662530, now seen corresponding path program 3 times [2024-11-08 14:12:46,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:46,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630231363] [2024-11-08 14:12:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:46,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:47,013 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 18 proven. 72 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-08 14:12:47,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:47,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630231363] [2024-11-08 14:12:47,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630231363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:47,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361087101] [2024-11-08 14:12:47,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 14:12:47,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:47,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:47,015 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:47,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 14:12:47,102 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 14:12:47,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:47,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 14:12:47,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 14:12:47,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-08 14:12:47,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361087101] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:47,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:47,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 38 [2024-11-08 14:12:47,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583685666] [2024-11-08 14:12:47,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:47,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 14:12:47,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:47,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 14:12:47,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=1166, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 14:12:47,600 INFO L87 Difference]: Start difference. First operand 768 states and 1011 transitions. Second operand has 38 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 38 states have internal predecessors, (63), 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) [2024-11-08 14:12:52,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:52,833 INFO L93 Difference]: Finished difference Result 1693 states and 2396 transitions. [2024-11-08 14:12:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-08 14:12:52,834 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 38 states have internal predecessors, (63), 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 39 [2024-11-08 14:12:52,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:52,838 INFO L225 Difference]: With dead ends: 1693 [2024-11-08 14:12:52,838 INFO L226 Difference]: Without dead ends: 1524 [2024-11-08 14:12:52,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5308 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3314, Invalid=14776, Unknown=0, NotChecked=0, Total=18090 [2024-11-08 14:12:52,840 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 458 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 4176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:52,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 765 Invalid, 4176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-08 14:12:52,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-08 14:12:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 920. [2024-11-08 14:12:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 919 states have (on average 1.3220892274211098) internal successors, (1215), 919 states have internal predecessors, (1215), 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) [2024-11-08 14:12:53,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1215 transitions. [2024-11-08 14:12:53,503 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1215 transitions. Word has length 39 [2024-11-08 14:12:53,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:53,503 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1215 transitions. [2024-11-08 14:12:53,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 38 states have internal predecessors, (63), 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) [2024-11-08 14:12:53,503 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1215 transitions. [2024-11-08 14:12:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-08 14:12:53,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:53,505 INFO L215 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:53,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-08 14:12:53,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:53,705 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:53,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1598515239, now seen corresponding path program 6 times [2024-11-08 14:12:53,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:53,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219216601] [2024-11-08 14:12:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 14:12:54,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:54,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219216601] [2024-11-08 14:12:54,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219216601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:54,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443568416] [2024-11-08 14:12:54,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:12:54,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:54,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:54,018 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:54,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 14:12:54,099 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-08 14:12:54,099 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:54,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 14:12:54,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 14:12:54,261 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-08 14:12:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443568416] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:54,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:54,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 8, 8] total 27 [2024-11-08 14:12:54,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518183093] [2024-11-08 14:12:54,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:54,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 14:12:54,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:54,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 14:12:54,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=569, Unknown=0, NotChecked=0, Total=702 [2024-11-08 14:12:54,487 INFO L87 Difference]: Start difference. First operand 920 states and 1215 transitions. Second operand has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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) [2024-11-08 14:12:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:56,622 INFO L93 Difference]: Finished difference Result 1787 states and 2478 transitions. [2024-11-08 14:12:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-08 14:12:56,623 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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 40 [2024-11-08 14:12:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:56,627 INFO L225 Difference]: With dead ends: 1787 [2024-11-08 14:12:56,627 INFO L226 Difference]: Without dead ends: 1427 [2024-11-08 14:12:56,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 69 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=708, Invalid=2484, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 14:12:56,628 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 342 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:56,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 864 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:12:56,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2024-11-08 14:12:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 969. [2024-11-08 14:12:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 968 states have (on average 1.3326446280991735) internal successors, (1290), 968 states have internal predecessors, (1290), 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) [2024-11-08 14:12:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1290 transitions. [2024-11-08 14:12:57,342 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1290 transitions. Word has length 40 [2024-11-08 14:12:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:12:57,342 INFO L471 AbstractCegarLoop]: Abstraction has 969 states and 1290 transitions. [2024-11-08 14:12:57,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 27 states have internal predecessors, (53), 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) [2024-11-08 14:12:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1290 transitions. [2024-11-08 14:12:57,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 14:12:57,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:12:57,344 INFO L215 NwaCegarLoop]: trace histogram [13, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:12:57,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-08 14:12:57,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:57,549 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:12:57,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:12:57,549 INFO L85 PathProgramCache]: Analyzing trace with hash -803486290, now seen corresponding path program 11 times [2024-11-08 14:12:57,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:12:57,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770513346] [2024-11-08 14:12:57,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:12:57,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:12:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:12:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:12:57,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:12:57,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770513346] [2024-11-08 14:12:57,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770513346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:12:57,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812081991] [2024-11-08 14:12:57,860 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 14:12:57,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:12:57,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:12:57,862 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:12:57,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 14:12:58,070 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 14:12:58,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:12:58,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 14:12:58,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:12:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-08 14:12:58,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:12:58,202 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-08 14:12:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812081991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:12:58,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:12:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 6] total 24 [2024-11-08 14:12:58,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449618452] [2024-11-08 14:12:58,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:12:58,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 14:12:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:12:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 14:12:58,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2024-11-08 14:12:58,204 INFO L87 Difference]: Start difference. First operand 969 states and 1290 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 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) [2024-11-08 14:12:59,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:12:59,808 INFO L93 Difference]: Finished difference Result 1675 states and 2306 transitions. [2024-11-08 14:12:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 14:12:59,808 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 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 41 [2024-11-08 14:12:59,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:12:59,814 INFO L225 Difference]: With dead ends: 1675 [2024-11-08 14:12:59,814 INFO L226 Difference]: Without dead ends: 1280 [2024-11-08 14:12:59,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 14:12:59,815 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 99 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 1391 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 14:12:59,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1117 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 14:12:59,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2024-11-08 14:13:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1045. [2024-11-08 14:13:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1044 states have (on average 1.3256704980842913) internal successors, (1384), 1044 states have internal predecessors, (1384), 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) [2024-11-08 14:13:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1384 transitions. [2024-11-08 14:13:00,582 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1384 transitions. Word has length 41 [2024-11-08 14:13:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:00,582 INFO L471 AbstractCegarLoop]: Abstraction has 1045 states and 1384 transitions. [2024-11-08 14:13:00,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 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) [2024-11-08 14:13:00,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1384 transitions. [2024-11-08 14:13:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 14:13:00,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:00,585 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:00,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-08 14:13:00,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:00,785 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:00,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2041166362, now seen corresponding path program 12 times [2024-11-08 14:13:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:00,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687913040] [2024-11-08 14:13:00,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:00,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 14:13:01,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:01,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687913040] [2024-11-08 14:13:01,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687913040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:01,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331776597] [2024-11-08 14:13:01,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 14:13:01,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:01,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:01,113 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:13:01,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 14:13:01,183 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 14:13:01,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 14:13:01,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-08 14:13:01,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:13:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 14:13:01,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:13:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 14:13:01,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331776597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:13:01,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:13:01,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-11-08 14:13:01,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193226710] [2024-11-08 14:13:01,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:13:01,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 14:13:01,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:01,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 14:13:01,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:13:01,453 INFO L87 Difference]: Start difference. First operand 1045 states and 1384 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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) [2024-11-08 14:13:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 14:13:03,107 INFO L93 Difference]: Finished difference Result 1667 states and 2146 transitions. [2024-11-08 14:13:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 14:13:03,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 42 [2024-11-08 14:13:03,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 14:13:03,114 INFO L225 Difference]: With dead ends: 1667 [2024-11-08 14:13:03,114 INFO L226 Difference]: Without dead ends: 1434 [2024-11-08 14:13:03,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 23 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-08 14:13:03,115 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 14:13:03,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 215 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 14:13:03,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-08 14:13:03,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1013. [2024-11-08 14:13:03,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 1.3310276679841897) internal successors, (1347), 1012 states have internal predecessors, (1347), 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) [2024-11-08 14:13:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1347 transitions. [2024-11-08 14:13:03,977 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1347 transitions. Word has length 42 [2024-11-08 14:13:03,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 14:13:03,977 INFO L471 AbstractCegarLoop]: Abstraction has 1013 states and 1347 transitions. [2024-11-08 14:13:03,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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) [2024-11-08 14:13:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1347 transitions. [2024-11-08 14:13:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 14:13:03,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 14:13:03,979 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 14:13:03,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-08 14:13:04,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 14:13:04,179 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 14:13:04,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 14:13:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1591776935, now seen corresponding path program 13 times [2024-11-08 14:13:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 14:13:04,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536461687] [2024-11-08 14:13:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 14:13:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 14:13:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-08 14:13:04,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 14:13:04,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536461687] [2024-11-08 14:13:04,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536461687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 14:13:04,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359179335] [2024-11-08 14:13:04,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 14:13:04,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 14:13:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 14:13:04,546 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 14:13:04,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 14:13:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 14:13:04,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 14:13:04,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 14:13:04,751 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-08 14:13:04,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 14:13:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-08 14:13:04,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359179335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 14:13:04,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 14:13:04,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 9] total 21 [2024-11-08 14:13:04,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226262347] [2024-11-08 14:13:04,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 14:13:04,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 14:13:04,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 14:13:04,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 14:13:04,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-08 14:13:04,904 INFO L87 Difference]: Start difference. First operand 1013 states and 1347 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 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)