./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum_const4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/zero_sum_const4.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 e61c61c9ffe0a2031cf5a0964b1882adcc5bdae1b7345aeaf1c374f155ad9e78 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:16:17,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:16:17,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:16:17,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:16:17,474 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:16:17,497 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:16:17,498 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:16:17,499 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:16:17,499 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:16:17,499 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:16:17,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:16:17,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:16:17,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:16:17,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:16:17,500 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:16:17,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:16:17,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:16:17,502 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:16:17,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:16:17,502 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:16:17,502 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:16:17,502 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:16:17,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:16:17,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:16:17,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:16:17,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:16:17,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:16:17,504 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> e61c61c9ffe0a2031cf5a0964b1882adcc5bdae1b7345aeaf1c374f155ad9e78 [2025-02-05 10:16:17,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:16:17,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:16:17,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:16:17,738 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:16:17,738 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:16:17,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_const4.c [2025-02-05 10:16:18,874 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c44bee60/35d75c3aa10542099e68f51b4a201287/FLAG4bd9ae488 [2025-02-05 10:16:19,113 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:16:19,114 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const4.c [2025-02-05 10:16:19,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c44bee60/35d75c3aa10542099e68f51b4a201287/FLAG4bd9ae488 [2025-02-05 10:16:19,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9c44bee60/35d75c3aa10542099e68f51b4a201287 [2025-02-05 10:16:19,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:16:19,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:16:19,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:16:19,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:16:19,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:16:19,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61202a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19, skipping insertion in model container [2025-02-05 10:16:19,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,152 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:16:19,274 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const4.c[406,419] [2025-02-05 10:16:19,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:16:19,307 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:16:19,314 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_const4.c[406,419] [2025-02-05 10:16:19,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:16:19,337 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:16:19,338 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19 WrapperNode [2025-02-05 10:16:19,339 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:16:19,340 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:16:19,340 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:16:19,340 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:16:19,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,369 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 100 [2025-02-05 10:16:19,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:16:19,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:16:19,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:16:19,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:16:19,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,378 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,391 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-05 10:16:19,393 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,393 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,397 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,402 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:16:19,406 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:16:19,407 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:16:19,407 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:16:19,408 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (1/1) ... [2025-02-05 10:16:19,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:16:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:19,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 10:16:19,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 10:16:19,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:16:19,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:16:19,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:16:19,514 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:16:19,515 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:16:19,613 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-05 10:16:19,614 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:16:19,619 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:16:19,619 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:16:19,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:16:19 BoogieIcfgContainer [2025-02-05 10:16:19,619 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:16:19,621 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:16:19,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:16:19,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:16:19,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:16:19" (1/3) ... [2025-02-05 10:16:19,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b73dac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:16:19, skipping insertion in model container [2025-02-05 10:16:19,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:16:19" (2/3) ... [2025-02-05 10:16:19,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b73dac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:16:19, skipping insertion in model container [2025-02-05 10:16:19,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:16:19" (3/3) ... [2025-02-05 10:16:19,625 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum_const4.c [2025-02-05 10:16:19,633 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:16:19,634 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum_const4.c that has 1 procedures, 20 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2025-02-05 10:16:19,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:16:19,668 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;@16192c6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:16:19,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:16:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2025-02-05 10:16:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 10:16:19,673 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:19,674 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:19,674 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:19,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:19,677 INFO L85 PathProgramCache]: Analyzing trace with hash 205415125, now seen corresponding path program 1 times [2025-02-05 10:16:19,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069464863] [2025-02-05 10:16:19,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:16:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:19,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 10:16:19,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 10:16:19,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:16:19,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:19,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:16:19,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:19,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069464863] [2025-02-05 10:16:19,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069464863] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:16:19,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:16:19,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:16:19,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888342192] [2025-02-05 10:16:19,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:16:19,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:16:19,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:19,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:16:19,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:16:19,914 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-05 10:16:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:19,984 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2025-02-05 10:16:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:16:19,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2025-02-05 10:16:19,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:19,990 INFO L225 Difference]: With dead ends: 37 [2025-02-05 10:16:19,990 INFO L226 Difference]: Without dead ends: 16 [2025-02-05 10:16:19,992 INFO L434 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 [2025-02-05 10:16:19,997 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:19,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:16:20,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-05 10:16:20,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-05 10:16:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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) [2025-02-05 10:16:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2025-02-05 10:16:20,026 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 24 transitions. Word has length 14 [2025-02-05 10:16:20,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:20,027 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 24 transitions. [2025-02-05 10:16:20,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-05 10:16:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 24 transitions. [2025-02-05 10:16:20,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-05 10:16:20,028 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:20,028 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:20,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:16:20,029 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:20,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:20,030 INFO L85 PathProgramCache]: Analyzing trace with hash -80059440, now seen corresponding path program 1 times [2025-02-05 10:16:20,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:20,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450905901] [2025-02-05 10:16:20,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:16:20,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:20,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-05 10:16:20,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-05 10:16:20,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:16:20,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:16:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450905901] [2025-02-05 10:16:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450905901] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:16:20,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:16:20,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:16:20,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793044529] [2025-02-05 10:16:20,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:16:20,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:16:20,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:20,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:16:20,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:16:20,137 INFO L87 Difference]: Start difference. First operand 16 states and 24 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) [2025-02-05 10:16:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:20,197 INFO L93 Difference]: Finished difference Result 34 states and 56 transitions. [2025-02-05 10:16:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:16:20,198 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 [2025-02-05 10:16:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:20,198 INFO L225 Difference]: With dead ends: 34 [2025-02-05 10:16:20,198 INFO L226 Difference]: Without dead ends: 24 [2025-02-05 10:16:20,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:16:20,199 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:20,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 7 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:16:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-05 10:16:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-02-05 10:16:20,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 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) [2025-02-05 10:16:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2025-02-05 10:16:20,204 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 15 [2025-02-05 10:16:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:20,204 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2025-02-05 10:16:20,204 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) [2025-02-05 10:16:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2025-02-05 10:16:20,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-05 10:16:20,205 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:20,205 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:20,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:16:20,205 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:20,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 12584656, now seen corresponding path program 1 times [2025-02-05 10:16:20,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:20,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341168795] [2025-02-05 10:16:20,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:16:20,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:20,214 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 10:16:20,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 10:16:20,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:16:20,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 10:16:20,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:20,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341168795] [2025-02-05 10:16:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341168795] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:20,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420494958] [2025-02-05 10:16:20,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:16:20,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:20,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:20,346 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:20,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 10:16:20,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-05 10:16:20,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-05 10:16:20,417 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:16:20,417 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:20,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:16:20,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 10:16:20,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 10:16:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420494958] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:20,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 10:16:20,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861750272] [2025-02-05 10:16:20,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:20,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 10:16:20,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:20,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 10:16:20,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:16:20,508 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2025-02-05 10:16:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:20,555 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2025-02-05 10:16:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:16:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 [2025-02-05 10:16:20,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:20,559 INFO L225 Difference]: With dead ends: 44 [2025-02-05 10:16:20,559 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 10:16:20,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:16:20,560 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:20,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:16:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 10:16:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-05 10:16:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 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) [2025-02-05 10:16:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2025-02-05 10:16:20,567 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 23 [2025-02-05 10:16:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:20,567 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2025-02-05 10:16:20,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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) [2025-02-05 10:16:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2025-02-05 10:16:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:16:20,568 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:20,568 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:20,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 10:16:20,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:20,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:20,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:20,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1320816587, now seen corresponding path program 2 times [2025-02-05 10:16:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:20,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669000075] [2025-02-05 10:16:20,770 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:16:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:20,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-05 10:16:20,798 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:16:20,801 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:16:20,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:20,900 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:16:20,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669000075] [2025-02-05 10:16:20,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669000075] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:20,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442154045] [2025-02-05 10:16:20,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:16:20,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:20,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:20,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:20,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 10:16:20,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-02-05 10:16:20,975 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:16:20,975 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:16:20,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:20,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:16:20,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:16:21,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-05 10:16:21,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442154045] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:21,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:21,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-05 10:16:21,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794306622] [2025-02-05 10:16:21,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:21,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 10:16:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:21,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 10:16:21,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-02-05 10:16:21,067 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2025-02-05 10:16:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:21,140 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2025-02-05 10:16:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 10:16:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 24 [2025-02-05 10:16:21,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:21,141 INFO L225 Difference]: With dead ends: 50 [2025-02-05 10:16:21,141 INFO L226 Difference]: Without dead ends: 33 [2025-02-05 10:16:21,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-02-05 10:16:21,142 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:21,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:16:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-02-05 10:16:21,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2025-02-05 10:16:21,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 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) [2025-02-05 10:16:21,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2025-02-05 10:16:21,150 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 24 [2025-02-05 10:16:21,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:21,150 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2025-02-05 10:16:21,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2025-02-05 10:16:21,150 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2025-02-05 10:16:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-05 10:16:21,151 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:21,151 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:21,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 10:16:21,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:21,352 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:21,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1781985995, now seen corresponding path program 3 times [2025-02-05 10:16:21,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:21,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942608912] [2025-02-05 10:16:21,353 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:16:21,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:21,361 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:16:21,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:16:21,377 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 10:16:21,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:16:23,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:23,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942608912] [2025-02-05 10:16:23,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942608912] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:23,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155533346] [2025-02-05 10:16:23,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:16:23,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:23,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:23,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:23,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 10:16:23,068 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 32 statements into 2 equivalence classes. [2025-02-05 10:16:23,089 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-05 10:16:23,089 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 10:16:23,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:23,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 77 conjuncts are in the unsatisfiable core [2025-02-05 10:16:23,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:23,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:16:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:16:23,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:16:23,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155533346] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:23,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:23,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 9] total 21 [2025-02-05 10:16:23,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388342677] [2025-02-05 10:16:23,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:23,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-05 10:16:23,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:23,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-05 10:16:23,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2025-02-05 10:16:23,565 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:16:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:23,745 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2025-02-05 10:16:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:16:23,746 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-05 10:16:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:23,747 INFO L225 Difference]: With dead ends: 58 [2025-02-05 10:16:23,747 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 10:16:23,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2025-02-05 10:16:23,747 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:23,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:16:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 10:16:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2025-02-05 10:16:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 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) [2025-02-05 10:16:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2025-02-05 10:16:23,754 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 32 [2025-02-05 10:16:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:23,754 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2025-02-05 10:16:23,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.619047619047619) internal successors, (76), 21 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:16:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2025-02-05 10:16:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-05 10:16:23,755 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:23,755 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:23,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 10:16:23,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:23,959 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:23,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash 593040752, now seen corresponding path program 4 times [2025-02-05 10:16:23,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:23,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129239708] [2025-02-05 10:16:23,961 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:16:23,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:23,977 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-05 10:16:23,988 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 33 statements. [2025-02-05 10:16:23,988 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:16:23,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 10:16:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129239708] [2025-02-05 10:16:24,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129239708] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:24,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103056605] [2025-02-05 10:16:24,061 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:16:24,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:24,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:24,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:24,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 10:16:24,095 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-05 10:16:24,109 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 30 of 33 statements. [2025-02-05 10:16:24,109 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:16:24,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:24,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:16:24,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 10:16:24,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 10:16:24,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103056605] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:24,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:24,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-02-05 10:16:24,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085528276] [2025-02-05 10:16:24,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:24,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 10:16:24,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:24,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 10:16:24,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:16:24,209 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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) [2025-02-05 10:16:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:24,370 INFO L93 Difference]: Finished difference Result 112 states and 148 transitions. [2025-02-05 10:16:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 10:16:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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 [2025-02-05 10:16:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:24,371 INFO L225 Difference]: With dead ends: 112 [2025-02-05 10:16:24,371 INFO L226 Difference]: Without dead ends: 63 [2025-02-05 10:16:24,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-05 10:16:24,372 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:24,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:16:24,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-05 10:16:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2025-02-05 10:16:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 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) [2025-02-05 10:16:24,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2025-02-05 10:16:24,378 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 33 [2025-02-05 10:16:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:24,378 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2025-02-05 10:16:24,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 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) [2025-02-05 10:16:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2025-02-05 10:16:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 10:16:24,379 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:24,379 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:24,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 10:16:24,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-05 10:16:24,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:24,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash 753007733, now seen corresponding path program 5 times [2025-02-05 10:16:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:24,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630197566] [2025-02-05 10:16:24,580 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:16:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:24,587 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 3 equivalence classes. [2025-02-05 10:16:24,596 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:16:24,596 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 10:16:24,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 10:16:24,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630197566] [2025-02-05 10:16:24,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630197566] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:24,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32728680] [2025-02-05 10:16:24,666 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:16:24,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:24,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:24,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:24,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 10:16:24,697 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 34 statements into 3 equivalence classes. [2025-02-05 10:16:24,739 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:16:24,739 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-02-05 10:16:24,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:24,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:16:24,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 10:16:24,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 10:16:24,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32728680] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:24,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:24,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-02-05 10:16:24,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727533807] [2025-02-05 10:16:24,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:24,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 10:16:24,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:24,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 10:16:24,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:16:24,809 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2025-02-05 10:16:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:24,946 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2025-02-05 10:16:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 10:16:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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 34 [2025-02-05 10:16:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:24,947 INFO L225 Difference]: With dead ends: 63 [2025-02-05 10:16:24,947 INFO L226 Difference]: Without dead ends: 42 [2025-02-05 10:16:24,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2025-02-05 10:16:24,948 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:24,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:16:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-05 10:16:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-05 10:16:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 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) [2025-02-05 10:16:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2025-02-05 10:16:24,952 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 34 [2025-02-05 10:16:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:24,952 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2025-02-05 10:16:24,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2025-02-05 10:16:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2025-02-05 10:16:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-05 10:16:24,953 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:24,953 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:24,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 10:16:25,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:25,154 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:25,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash 2092591216, now seen corresponding path program 6 times [2025-02-05 10:16:25,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:25,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967622459] [2025-02-05 10:16:25,155 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:16:25,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:25,161 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 3 equivalence classes. [2025-02-05 10:16:25,240 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 10:16:25,240 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-05 10:16:25,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:16:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967622459] [2025-02-05 10:16:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967622459] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113026908] [2025-02-05 10:16:27,374 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:16:27,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:27,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:27,376 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:27,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 10:16:27,410 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 3 equivalence classes. [2025-02-05 10:16:27,432 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 10:16:27,433 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-05 10:16:27,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:27,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 106 conjuncts are in the unsatisfiable core [2025-02-05 10:16:27,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:16:27,750 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:28,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:16:28,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2025-02-05 10:16:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:16:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113026908] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:28,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:28,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12, 12] total 41 [2025-02-05 10:16:28,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087780053] [2025-02-05 10:16:28,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:28,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 10:16:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:28,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 10:16:28,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 10:16:28,297 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 41 states have internal predecessors, (111), 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) [2025-02-05 10:16:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:29,148 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2025-02-05 10:16:29,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 10:16:29,148 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 41 states have internal predecessors, (111), 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 [2025-02-05 10:16:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:29,150 INFO L225 Difference]: With dead ends: 115 [2025-02-05 10:16:29,150 INFO L226 Difference]: Without dead ends: 112 [2025-02-05 10:16:29,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=263, Invalid=2187, Unknown=0, NotChecked=0, Total=2450 [2025-02-05 10:16:29,151 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:29,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:16:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-02-05 10:16:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2025-02-05 10:16:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 99 states have internal predecessors, (126), 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) [2025-02-05 10:16:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2025-02-05 10:16:29,162 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 41 [2025-02-05 10:16:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:29,163 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2025-02-05 10:16:29,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.707317073170732) internal successors, (111), 41 states have internal predecessors, (111), 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) [2025-02-05 10:16:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2025-02-05 10:16:29,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 10:16:29,163 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:29,164 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:29,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 10:16:29,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-05 10:16:29,368 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:29,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash 445850005, now seen corresponding path program 7 times [2025-02-05 10:16:29,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:29,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315188639] [2025-02-05 10:16:29,369 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:16:29,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:29,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-05 10:16:29,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 10:16:29,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:16:29,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 10:16:29,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315188639] [2025-02-05 10:16:29,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315188639] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:29,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568978440] [2025-02-05 10:16:29,463 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:16:29,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:29,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:29,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:29,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 10:16:29,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-05 10:16:29,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 10:16:29,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:16:29,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:29,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 10:16:29,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 10:16:29,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 10:16:29,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568978440] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:29,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:29,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-05 10:16:29,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592941827] [2025-02-05 10:16:29,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:29,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:16:29,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:29,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:16:29,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:16:29,658 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 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) [2025-02-05 10:16:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:29,851 INFO L93 Difference]: Finished difference Result 195 states and 247 transitions. [2025-02-05 10:16:29,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:16:29,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 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 [2025-02-05 10:16:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:29,853 INFO L225 Difference]: With dead ends: 195 [2025-02-05 10:16:29,853 INFO L226 Difference]: Without dead ends: 78 [2025-02-05 10:16:29,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:16:29,853 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:29,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:16:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-05 10:16:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2025-02-05 10:16:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 73 states have internal predecessors, (88), 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) [2025-02-05 10:16:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2025-02-05 10:16:29,860 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 42 [2025-02-05 10:16:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:29,860 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2025-02-05 10:16:29,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 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) [2025-02-05 10:16:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2025-02-05 10:16:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-05 10:16:29,861 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:29,861 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:29,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 10:16:30,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:30,065 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:30,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:30,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1335249680, now seen corresponding path program 8 times [2025-02-05 10:16:30,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:30,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878697005] [2025-02-05 10:16:30,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:16:30,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:30,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 10:16:30,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 10:16:30,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:16:30,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-05 10:16:30,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878697005] [2025-02-05 10:16:30,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878697005] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292931263] [2025-02-05 10:16:30,164 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:16:30,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:30,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:30,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:30,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 10:16:30,203 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 10:16:30,223 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 10:16:30,223 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:16:30,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:30,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-05 10:16:30,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-05 10:16:30,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-02-05 10:16:30,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292931263] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:30,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:30,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-02-05 10:16:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002159895] [2025-02-05 10:16:30,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:30,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:16:30,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:30,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:16:30,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:16:30,347 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 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) [2025-02-05 10:16:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:30,558 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2025-02-05 10:16:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 10:16:30,558 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 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 43 [2025-02-05 10:16:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:30,559 INFO L225 Difference]: With dead ends: 78 [2025-02-05 10:16:30,559 INFO L226 Difference]: Without dead ends: 51 [2025-02-05 10:16:30,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2025-02-05 10:16:30,559 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:30,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:16:30,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-05 10:16:30,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-05 10:16:30,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 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) [2025-02-05 10:16:30,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2025-02-05 10:16:30,565 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 43 [2025-02-05 10:16:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:30,565 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2025-02-05 10:16:30,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 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) [2025-02-05 10:16:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2025-02-05 10:16:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-05 10:16:30,566 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:30,566 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:30,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 10:16:30,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:30,767 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:30,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:30,767 INFO L85 PathProgramCache]: Analyzing trace with hash -987635819, now seen corresponding path program 9 times [2025-02-05 10:16:30,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:30,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460588765] [2025-02-05 10:16:30,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:16:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:30,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 3 equivalence classes. [2025-02-05 10:16:30,806 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 10:16:30,806 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:16:30,806 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:16:33,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:33,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460588765] [2025-02-05 10:16:33,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460588765] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:33,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351684884] [2025-02-05 10:16:33,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:16:33,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:33,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:33,513 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:33,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 10:16:33,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 3 equivalence classes. [2025-02-05 10:16:33,576 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 10:16:33,577 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:16:33,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:33,579 WARN L254 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 156 conjuncts are in the unsatisfiable core [2025-02-05 10:16:33,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:35,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:16:35,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2025-02-05 10:16:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:16:35,756 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:40,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:16:40,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 52 treesize of output 89 [2025-02-05 10:16:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:16:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351684884] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:41,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:41,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 36] total 104 [2025-02-05 10:16:41,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050525569] [2025-02-05 10:16:41,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:41,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2025-02-05 10:16:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:41,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2025-02-05 10:16:41,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=926, Invalid=9780, Unknown=6, NotChecked=0, Total=10712 [2025-02-05 10:16:41,371 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 104 states, 104 states have (on average 1.3461538461538463) internal successors, (140), 104 states have internal predecessors, (140), 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) [2025-02-05 10:16:52,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:52,829 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2025-02-05 10:16:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-05 10:16:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.3461538461538463) internal successors, (140), 104 states have internal predecessors, (140), 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 50 [2025-02-05 10:16:52,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:52,830 INFO L225 Difference]: With dead ends: 128 [2025-02-05 10:16:52,830 INFO L226 Difference]: Without dead ends: 87 [2025-02-05 10:16:52,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 5745 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=1780, Invalid=15242, Unknown=8, NotChecked=0, Total=17030 [2025-02-05 10:16:52,833 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:52,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-05 10:16:52,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-02-05 10:16:52,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2025-02-05 10:16:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.175) internal successors, (94), 80 states have internal predecessors, (94), 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) [2025-02-05 10:16:52,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2025-02-05 10:16:52,847 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 50 [2025-02-05 10:16:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:52,847 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2025-02-05 10:16:52,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.3461538461538463) internal successors, (140), 104 states have internal predecessors, (140), 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) [2025-02-05 10:16:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2025-02-05 10:16:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-05 10:16:52,848 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:52,848 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:52,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 10:16:53,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:53,053 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:53,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2088999184, now seen corresponding path program 10 times [2025-02-05 10:16:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252254002] [2025-02-05 10:16:53,054 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:16:53,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:53,059 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-02-05 10:16:53,064 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 48 of 51 statements. [2025-02-05 10:16:53,064 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:16:53,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-05 10:16:53,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:53,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252254002] [2025-02-05 10:16:53,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252254002] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:53,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961455480] [2025-02-05 10:16:53,162 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:16:53,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:53,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:53,168 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:53,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 10:16:53,211 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-02-05 10:16:53,231 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 48 of 51 statements. [2025-02-05 10:16:53,231 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:16:53,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:53,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:16:53,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-05 10:16:53,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-05 10:16:53,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961455480] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:53,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:53,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2025-02-05 10:16:53,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785741245] [2025-02-05 10:16:53,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:53,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 10:16:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:53,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 10:16:53,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-02-05 10:16:53,395 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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) [2025-02-05 10:16:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:53,845 INFO L93 Difference]: Finished difference Result 170 states and 201 transitions. [2025-02-05 10:16:53,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:16:53,845 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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 51 [2025-02-05 10:16:53,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:53,846 INFO L225 Difference]: With dead ends: 170 [2025-02-05 10:16:53,847 INFO L226 Difference]: Without dead ends: 98 [2025-02-05 10:16:53,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 87 SyntacticMatches, 11 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2025-02-05 10:16:53,848 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:53,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:16:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-05 10:16:53,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2025-02-05 10:16:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 90 states have internal predecessors, (103), 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) [2025-02-05 10:16:53,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2025-02-05 10:16:53,868 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 51 [2025-02-05 10:16:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:53,869 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2025-02-05 10:16:53,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 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) [2025-02-05 10:16:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2025-02-05 10:16:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-05 10:16:53,870 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:53,870 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:53,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 10:16:54,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 10:16:54,071 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:54,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1803645008, now seen corresponding path program 11 times [2025-02-05 10:16:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105846073] [2025-02-05 10:16:54,072 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:16:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:54,077 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 4 equivalence classes. [2025-02-05 10:16:54,088 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 53 of 53 statements. [2025-02-05 10:16:54,088 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-05 10:16:54,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-05 10:16:54,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:16:54,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105846073] [2025-02-05 10:16:54,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105846073] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:16:54,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661902205] [2025-02-05 10:16:54,211 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:16:54,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:16:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:16:54,213 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:16:54,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 10:16:54,249 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 53 statements into 4 equivalence classes. [2025-02-05 10:16:54,289 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 53 of 53 statements. [2025-02-05 10:16:54,289 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-02-05 10:16:54,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:16:54,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-05 10:16:54,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:16:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 10:16:54,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:16:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-05 10:16:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661902205] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:16:54,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:16:54,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 22 [2025-02-05 10:16:54,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874860040] [2025-02-05 10:16:54,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:16:54,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 10:16:54,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:16:54,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 10:16:54,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2025-02-05 10:16:54,518 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 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) [2025-02-05 10:16:54,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:16:54,963 INFO L93 Difference]: Finished difference Result 201 states and 236 transitions. [2025-02-05 10:16:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 10:16:54,964 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 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 53 [2025-02-05 10:16:54,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:16:54,965 INFO L225 Difference]: With dead ends: 201 [2025-02-05 10:16:54,965 INFO L226 Difference]: Without dead ends: 120 [2025-02-05 10:16:54,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 10:16:54,966 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 48 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:16:54,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 26 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:16:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-05 10:16:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2025-02-05 10:16:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 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) [2025-02-05 10:16:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2025-02-05 10:16:54,985 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 53 [2025-02-05 10:16:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:16:54,985 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2025-02-05 10:16:54,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 22 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) [2025-02-05 10:16:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2025-02-05 10:16:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-05 10:16:54,985 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:16:54,985 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:16:54,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 10:16:55,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 10:16:55,186 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:16:55,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:16:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1010589168, now seen corresponding path program 12 times [2025-02-05 10:16:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:16:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215468394] [2025-02-05 10:16:55,187 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:16:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:16:55,192 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 4 equivalence classes. [2025-02-05 10:16:55,235 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 59 of 59 statements. [2025-02-05 10:16:55,235 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 10:16:55,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 1 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:17:00,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:17:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215468394] [2025-02-05 10:17:00,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215468394] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:17:00,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528095010] [2025-02-05 10:17:00,557 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:17:00,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:17:00,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:17:00,559 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:17:00,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 10:17:00,598 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 4 equivalence classes. [2025-02-05 10:17:00,633 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 59 of 59 statements. [2025-02-05 10:17:00,633 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-02-05 10:17:00,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:00,636 WARN L254 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 180 conjuncts are in the unsatisfiable core [2025-02-05 10:17:00,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:17:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:17:03,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:17:16,680 INFO L349 Elim1Store]: treesize reduction 110, result has 62.5 percent of original size [2025-02-05 10:17:16,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 88 treesize of output 197 [2025-02-05 10:17:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 133 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:17:18,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528095010] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:17:18,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:17:18,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 41, 55] total 146 [2025-02-05 10:17:18,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109276512] [2025-02-05 10:17:18,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:17:18,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2025-02-05 10:17:18,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:17:18,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2025-02-05 10:17:18,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=19837, Unknown=4, NotChecked=0, Total=21170 [2025-02-05 10:17:18,501 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 146 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 146 states have internal predecessors, (170), 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) [2025-02-05 10:17:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:17:28,694 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2025-02-05 10:17:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-05 10:17:28,695 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 146 states have internal predecessors, (170), 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 59 [2025-02-05 10:17:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:17:28,696 INFO L225 Difference]: With dead ends: 173 [2025-02-05 10:17:28,696 INFO L226 Difference]: Without dead ends: 116 [2025-02-05 10:17:28,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13076 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=2862, Invalid=34190, Unknown=4, NotChecked=0, Total=37056 [2025-02-05 10:17:28,699 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 4240 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 5121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 4240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:17:28,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 173 Invalid, 5121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 4240 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2025-02-05 10:17:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-02-05 10:17:28,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 112. [2025-02-05 10:17:28,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1531531531531531) internal successors, (128), 111 states have internal predecessors, (128), 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) [2025-02-05 10:17:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2025-02-05 10:17:28,723 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 59 [2025-02-05 10:17:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:17:28,724 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2025-02-05 10:17:28,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 1.1643835616438356) internal successors, (170), 146 states have internal predecessors, (170), 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) [2025-02-05 10:17:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2025-02-05 10:17:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-05 10:17:28,724 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:17:28,724 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:17:28,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 10:17:28,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:17:28,929 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:17:28,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:17:28,930 INFO L85 PathProgramCache]: Analyzing trace with hash -304062411, now seen corresponding path program 13 times [2025-02-05 10:17:28,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:17:28,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847508280] [2025-02-05 10:17:28,930 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:17:28,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:17:28,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-05 10:17:28,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-05 10:17:28,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:17:28,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-05 10:17:29,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:17:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847508280] [2025-02-05 10:17:29,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847508280] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:17:29,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921772034] [2025-02-05 10:17:29,115 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:17:29,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:17:29,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:17:29,117 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:17:29,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 10:17:29,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-05 10:17:29,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-05 10:17:29,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:17:29,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:29,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 10:17:29,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:17:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-05 10:17:29,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:17:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-05 10:17:29,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921772034] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:17:29,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:17:29,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-02-05 10:17:29,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719497195] [2025-02-05 10:17:29,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:17:29,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-05 10:17:29,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:17:29,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-05 10:17:29,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-02-05 10:17:29,402 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 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) [2025-02-05 10:17:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:17:29,735 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2025-02-05 10:17:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:17:29,735 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 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 62 [2025-02-05 10:17:29,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:17:29,736 INFO L225 Difference]: With dead ends: 116 [2025-02-05 10:17:29,736 INFO L226 Difference]: Without dead ends: 77 [2025-02-05 10:17:29,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2025-02-05 10:17:29,737 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:17:29,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 21 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:17:29,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-05 10:17:29,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2025-02-05 10:17:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 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) [2025-02-05 10:17:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2025-02-05 10:17:29,753 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 62 [2025-02-05 10:17:29,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:17:29,753 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2025-02-05 10:17:29,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 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) [2025-02-05 10:17:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2025-02-05 10:17:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-05 10:17:29,753 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:17:29,754 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:17:29,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-05 10:17:29,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:17:29,954 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:17:29,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:17:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2029069835, now seen corresponding path program 14 times [2025-02-05 10:17:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:17:29,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001691817] [2025-02-05 10:17:29,956 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:17:29,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:17:29,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-02-05 10:17:29,985 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 10:17:29,986 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:17:29,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:17:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:17:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001691817] [2025-02-05 10:17:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001691817] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:17:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095449613] [2025-02-05 10:17:34,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:17:34,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:17:34,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:17:34,997 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:17:34,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 10:17:35,045 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 68 statements into 2 equivalence classes. [2025-02-05 10:17:35,082 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-05 10:17:35,082 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:17:35,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:35,085 WARN L254 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 213 conjuncts are in the unsatisfiable core [2025-02-05 10:17:35,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:17:35,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-05 10:17:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:17:35,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:17:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-05 10:17:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095449613] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:17:36,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:17:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 24, 17] total 74 [2025-02-05 10:17:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013962898] [2025-02-05 10:17:36,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:17:36,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2025-02-05 10:17:36,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:17:36,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2025-02-05 10:17:36,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=5061, Unknown=0, NotChecked=0, Total=5402 [2025-02-05 10:17:36,554 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand has 74 states, 74 states have (on average 2.2972972972972974) internal successors, (170), 74 states have internal predecessors, (170), 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) [2025-02-05 10:17:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:17:39,441 INFO L93 Difference]: Finished difference Result 230 states and 288 transitions. [2025-02-05 10:17:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-05 10:17:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.2972972972972974) internal successors, (170), 74 states have internal predecessors, (170), 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 68 [2025-02-05 10:17:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:17:39,447 INFO L225 Difference]: With dead ends: 230 [2025-02-05 10:17:39,447 INFO L226 Difference]: Without dead ends: 184 [2025-02-05 10:17:39,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2450 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=773, Invalid=8733, Unknown=0, NotChecked=0, Total=9506 [2025-02-05 10:17:39,448 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 829 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 829 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:17:39,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [829 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-05 10:17:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-02-05 10:17:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 170. [2025-02-05 10:17:39,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.2485207100591715) internal successors, (211), 169 states have internal predecessors, (211), 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) [2025-02-05 10:17:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 211 transitions. [2025-02-05 10:17:39,492 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 211 transitions. Word has length 68 [2025-02-05 10:17:39,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:17:39,493 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 211 transitions. [2025-02-05 10:17:39,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.2972972972972974) internal successors, (170), 74 states have internal predecessors, (170), 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) [2025-02-05 10:17:39,493 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 211 transitions. [2025-02-05 10:17:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-05 10:17:39,493 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:17:39,493 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:17:39,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-05 10:17:39,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-05 10:17:39,694 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:17:39,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:17:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1707612469, now seen corresponding path program 15 times [2025-02-05 10:17:39,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:17:39,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141930952] [2025-02-05 10:17:39,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:17:39,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:17:39,701 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 70 statements into 5 equivalence classes. [2025-02-05 10:17:39,727 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 10:17:39,727 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:17:39,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 15 proven. 34 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-02-05 10:17:39,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:17:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141930952] [2025-02-05 10:17:39,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141930952] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:17:39,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290176698] [2025-02-05 10:17:39,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:17:39,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:17:39,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:17:39,926 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:17:39,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 10:17:39,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 70 statements into 5 equivalence classes. [2025-02-05 10:17:40,027 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 10:17:40,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:17:40,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:40,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 10:17:40,031 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:17:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-02-05 10:17:40,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:17:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 21 proven. 28 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-02-05 10:17:40,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290176698] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:17:40,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:17:40,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2025-02-05 10:17:40,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659497149] [2025-02-05 10:17:40,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:17:40,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-05 10:17:40,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:17:40,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-05 10:17:40,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2025-02-05 10:17:40,297 INFO L87 Difference]: Start difference. First operand 170 states and 211 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 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) [2025-02-05 10:17:40,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:17:40,943 INFO L93 Difference]: Finished difference Result 350 states and 438 transitions. [2025-02-05 10:17:40,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 10:17:40,944 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 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 70 [2025-02-05 10:17:40,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:17:40,945 INFO L225 Difference]: With dead ends: 350 [2025-02-05 10:17:40,945 INFO L226 Difference]: Without dead ends: 215 [2025-02-05 10:17:40,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 117 SyntacticMatches, 14 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=909, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 10:17:40,946 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:17:40,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 25 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:17:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2025-02-05 10:17:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 150. [2025-02-05 10:17:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.221476510067114) internal successors, (182), 149 states have internal predecessors, (182), 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) [2025-02-05 10:17:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 182 transitions. [2025-02-05 10:17:40,986 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 182 transitions. Word has length 70 [2025-02-05 10:17:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:17:40,986 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 182 transitions. [2025-02-05 10:17:40,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 26 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) [2025-02-05 10:17:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 182 transitions. [2025-02-05 10:17:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-05 10:17:40,987 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:17:40,987 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:17:40,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-05 10:17:41,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 10:17:41,191 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:17:41,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:17:41,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1771370283, now seen corresponding path program 16 times [2025-02-05 10:17:41,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:17:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308553165] [2025-02-05 10:17:41,192 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:17:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:17:41,197 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-02-05 10:17:41,203 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 69 of 72 statements. [2025-02-05 10:17:41,203 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:17:41,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:41,404 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2025-02-05 10:17:41,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:17:41,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308553165] [2025-02-05 10:17:41,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308553165] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:17:41,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439975712] [2025-02-05 10:17:41,405 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:17:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:17:41,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:17:41,406 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:17:41,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 10:17:41,457 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-02-05 10:17:41,502 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 69 of 72 statements. [2025-02-05 10:17:41,502 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:17:41,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:17:41,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 10:17:41,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:17:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-02-05 10:17:41,710 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:17:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 35 proven. 21 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-02-05 10:17:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439975712] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:17:41,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:17:41,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2025-02-05 10:17:41,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700363631] [2025-02-05 10:17:41,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:17:41,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 10:17:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:17:41,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 10:17:41,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:17:41,825 INFO L87 Difference]: Start difference. First operand 150 states and 182 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 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) [2025-02-05 10:17:42,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:17:42,186 INFO L93 Difference]: Finished difference Result 217 states and 256 transitions. [2025-02-05 10:17:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 10:17:42,186 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 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 72 [2025-02-05 10:17:42,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:17:42,187 INFO L225 Difference]: With dead ends: 217 [2025-02-05 10:17:42,187 INFO L226 Difference]: Without dead ends: 78 [2025-02-05 10:17:42,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 123 SyntacticMatches, 14 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2025-02-05 10:17:42,188 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:17:42,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:17:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-05 10:17:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2025-02-05 10:17:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:17:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2025-02-05 10:17:42,210 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 72 [2025-02-05 10:17:42,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:17:42,210 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2025-02-05 10:17:42,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 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) [2025-02-05 10:17:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2025-02-05 10:17:42,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-02-05 10:17:42,211 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:17:42,211 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:17:42,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 10:17:42,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 10:17:42,412 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:17:42,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:17:42,412 INFO L85 PathProgramCache]: Analyzing trace with hash -136989776, now seen corresponding path program 17 times [2025-02-05 10:17:42,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:17:42,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249396179] [2025-02-05 10:17:42,412 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:17:42,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:17:42,418 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 5 equivalence classes. [2025-02-05 10:17:42,507 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 77 of 77 statements. [2025-02-05 10:17:42,507 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:17:42,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat