./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bor5.i --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/bor5.i -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 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:13:11,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:13:11,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:13:11,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:13:11,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:13:11,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:13:11,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:13:11,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:13:11,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:13:11,372 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:13:11,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:13:11,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:13:11,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:13:11,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:13:11,374 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:13:11,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:13:11,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:13:11,374 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:13:11,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:13:11,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:13:11,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:13:11,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:13:11,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:13:11,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:13:11,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:13:11,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:13:11,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:13:11,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:13:11,376 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:13:11,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:13:11,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:13:11,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:13:11,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:13:11,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:13:11,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:13:11,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:13:11,377 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 -> 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 [2025-02-05 10:13:11,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:13:11,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:13:11,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:13:11,612 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:13:11,612 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:13:11,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bor5.i [2025-02-05 10:13:12,752 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/89f1173d7/a882fca6f3e8487288206a99682c3174/FLAG783c33a46 [2025-02-05 10:13:12,984 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:13:12,985 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/bor5.i [2025-02-05 10:13:12,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/89f1173d7/a882fca6f3e8487288206a99682c3174/FLAG783c33a46 [2025-02-05 10:13:13,322 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/89f1173d7/a882fca6f3e8487288206a99682c3174 [2025-02-05 10:13:13,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:13:13,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:13:13,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:13:13,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:13:13,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:13:13,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f3466a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13, skipping insertion in model container [2025-02-05 10:13:13,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,340 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:13:13,446 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/bor5.i[1364,1377] [2025-02-05 10:13:13,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:13:13,458 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:13:13,473 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/bor5.i[1364,1377] [2025-02-05 10:13:13,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:13:13,483 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:13:13,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13 WrapperNode [2025-02-05 10:13:13,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:13:13,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:13:13,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:13:13,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:13:13,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,510 INFO L138 Inliner]: procedures = 16, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 75 [2025-02-05 10:13:13,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:13:13,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:13:13,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:13:13,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:13:13,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,517 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,528 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2025-02-05 10:13:13,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,529 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,535 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,535 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,536 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,537 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:13:13,538 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:13:13,538 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:13:13,538 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:13:13,538 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (1/1) ... [2025-02-05 10:13:13,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:13:13,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:13,577 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 10:13:13,582 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 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2025-02-05 10:13:13,596 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2025-02-05 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:13:13,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:13:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 10:13:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:13:13,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:13:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:13:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:13:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 10:13:13,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:13:13,646 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:13:13,648 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:13:13,797 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-02-05 10:13:13,797 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:13:13,811 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:13:13,811 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:13:13,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:13:13 BoogieIcfgContainer [2025-02-05 10:13:13,812 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:13:13,815 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:13:13,815 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:13:13,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:13:13,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:13:13" (1/3) ... [2025-02-05 10:13:13,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5107a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:13:13, skipping insertion in model container [2025-02-05 10:13:13,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:13:13" (2/3) ... [2025-02-05 10:13:13,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5107a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:13:13, skipping insertion in model container [2025-02-05 10:13:13,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:13:13" (3/3) ... [2025-02-05 10:13:13,821 INFO L128 eAbstractionObserver]: Analyzing ICFG bor5.i [2025-02-05 10:13:13,832 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:13:13,833 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bor5.i that has 2 procedures, 27 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 10:13:13,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:13:13,879 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;@364787e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:13:13,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:13:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:13,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 10:13:13,886 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:13,887 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:13,887 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:13,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:13,891 INFO L85 PathProgramCache]: Analyzing trace with hash -797157225, now seen corresponding path program 1 times [2025-02-05 10:13:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:13,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038402308] [2025-02-05 10:13:13,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:13,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:13,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:13:13,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:13:13,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:13,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:13:14,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:14,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038402308] [2025-02-05 10:13:14,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038402308] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:13:14,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:13:14,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:13:14,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539844181] [2025-02-05 10:13:14,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:13:14,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:13:14,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:14,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:13:14,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:13:14,175 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:14,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:14,222 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2025-02-05 10:13:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:13:14,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2025-02-05 10:13:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:14,228 INFO L225 Difference]: With dead ends: 51 [2025-02-05 10:13:14,229 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 10:13:14,232 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 10:13:14,234 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:14,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 10:13:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-05 10:13:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2025-02-05 10:13:14,269 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 25 [2025-02-05 10:13:14,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:14,269 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2025-02-05 10:13:14,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-05 10:13:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2025-02-05 10:13:14,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-05 10:13:14,272 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:14,272 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:14,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:13:14,273 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:14,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:14,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2092529177, now seen corresponding path program 1 times [2025-02-05 10:13:14,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:14,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182942986] [2025-02-05 10:13:14,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:14,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:14,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-05 10:13:14,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 10:13:14,303 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:14,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-05 10:13:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182942986] [2025-02-05 10:13:14,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182942986] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:14,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619596523] [2025-02-05 10:13:14,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:14,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:14,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:14,416 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 10:13:14,419 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 10:13:14,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-05 10:13:14,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-05 10:13:14,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:14,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:14,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:13:14,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:14,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:13:14,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 10:13:14,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619596523] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:13:14,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:13:14,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2025-02-05 10:13:14,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773609678] [2025-02-05 10:13:14,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:14,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 10:13:14,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:14,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 10:13:14,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-05 10:13:14,583 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:13:14,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:14,647 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2025-02-05 10:13:14,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 10:13:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 26 [2025-02-05 10:13:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:14,649 INFO L225 Difference]: With dead ends: 47 [2025-02-05 10:13:14,649 INFO L226 Difference]: Without dead ends: 29 [2025-02-05 10:13:14,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:13:14,650 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:14,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 61 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-05 10:13:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2025-02-05 10:13:14,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-02-05 10:13:14,654 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 26 [2025-02-05 10:13:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:14,654 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-02-05 10:13:14,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:13:14,654 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2025-02-05 10:13:14,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-05 10:13:14,655 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:14,655 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:14,663 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 10:13:14,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:14,859 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:14,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash 396322400, now seen corresponding path program 1 times [2025-02-05 10:13:14,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:14,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302703817] [2025-02-05 10:13:14,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:14,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:14,869 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-05 10:13:14,897 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-05 10:13:14,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:14,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 10:13:14,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:14,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302703817] [2025-02-05 10:13:14,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302703817] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:13:14,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:13:14,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:13:14,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132970718] [2025-02-05 10:13:14,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:13:14,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:13:14,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:14,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:13:14,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:13:14,999 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:13:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:15,038 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2025-02-05 10:13:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:13:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2025-02-05 10:13:15,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:15,039 INFO L225 Difference]: With dead ends: 40 [2025-02-05 10:13:15,039 INFO L226 Difference]: Without dead ends: 26 [2025-02-05 10:13:15,040 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 10:13:15,040 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:15,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 32 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:13:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-02-05 10:13:15,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-02-05 10:13:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 10:13:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2025-02-05 10:13:15,047 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 36 [2025-02-05 10:13:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:15,048 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2025-02-05 10:13:15,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:13:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2025-02-05 10:13:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-05 10:13:15,049 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:15,049 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:15,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 10:13:15,049 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:15,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash -379422146, now seen corresponding path program 1 times [2025-02-05 10:13:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:15,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582642805] [2025-02-05 10:13:15,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:15,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:15,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-05 10:13:15,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 10:13:15,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:15,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:13:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582642805] [2025-02-05 10:13:18,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582642805] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:18,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201461295] [2025-02-05 10:13:18,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:18,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:18,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:18,654 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 10:13:18,655 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 10:13:18,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-05 10:13:18,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-05 10:13:18,718 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:18,718 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:18,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 98 conjuncts are in the unsatisfiable core [2025-02-05 10:13:18,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:18,805 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 15 treesize of output 1 [2025-02-05 10:13:19,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 33 [2025-02-05 10:13:19,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:13:19,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 75 [2025-02-05 10:13:20,086 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2025-02-05 10:13:20,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 74 [2025-02-05 10:13:21,982 INFO L349 Elim1Store]: treesize reduction 530, result has 26.9 percent of original size [2025-02-05 10:13:21,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 1 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 459 treesize of output 433 [2025-02-05 10:13:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:13:24,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:24,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201461295] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:24,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 10:13:24,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31] total 55 [2025-02-05 10:13:24,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946196684] [2025-02-05 10:13:24,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:24,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-05 10:13:24,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:24,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-05 10:13:24,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2985, Unknown=0, NotChecked=0, Total=3192 [2025-02-05 10:13:24,887 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 55 states, 49 states have (on average 1.163265306122449) internal successors, (57), 47 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-05 10:13:29,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:13:33,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:13:35,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:13:40,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:13:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:13:42,627 INFO L93 Difference]: Finished difference Result 107 states and 142 transitions. [2025-02-05 10:13:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-05 10:13:42,627 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 49 states have (on average 1.163265306122449) internal successors, (57), 47 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2025-02-05 10:13:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:13:42,630 INFO L225 Difference]: With dead ends: 107 [2025-02-05 10:13:42,630 INFO L226 Difference]: Without dead ends: 101 [2025-02-05 10:13:42,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=403, Invalid=5449, Unknown=0, NotChecked=0, Total=5852 [2025-02-05 10:13:42,632 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 122 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 25 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:13:42,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 263 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1787 Invalid, 5 Unknown, 0 Unchecked, 16.2s Time] [2025-02-05 10:13:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-02-05 10:13:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 70. [2025-02-05 10:13:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 57 states have (on average 1.368421052631579) internal successors, (78), 59 states have internal predecessors, (78), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2025-02-05 10:13:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2025-02-05 10:13:42,647 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 37 [2025-02-05 10:13:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:13:42,647 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2025-02-05 10:13:42,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 49 states have (on average 1.163265306122449) internal successors, (57), 47 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-05 10:13:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2025-02-05 10:13:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 10:13:42,648 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:13:42,648 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:13:42,656 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 10:13:42,852 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 10:13:42,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:13:42,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:13:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash 444733784, now seen corresponding path program 1 times [2025-02-05 10:13:42,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:13:42,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422783597] [2025-02-05 10:13:42,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:42,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:13:42,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-05 10:13:42,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:13:42,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:42,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:13:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:13:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422783597] [2025-02-05 10:13:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422783597] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680971622] [2025-02-05 10:13:43,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:13:43,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:13:43,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:13:43,668 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 10:13:43,670 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 10:13:43,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-05 10:13:43,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:13:43,727 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:13:43,727 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:13:43,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-02-05 10:13:43,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:13:43,757 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 15 treesize of output 1 [2025-02-05 10:13:43,787 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 15 treesize of output 1 [2025-02-05 10:13:43,975 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:13:43,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2025-02-05 10:13:44,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:13:44,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 25 [2025-02-05 10:13:44,200 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2025-02-05 10:13:44,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 41 [2025-02-05 10:13:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:13:44,793 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:13:44,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680971622] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:13:44,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 10:13:44,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 40 [2025-02-05 10:13:44,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574365005] [2025-02-05 10:13:44,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 10:13:44,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 10:13:44,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:13:44,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 10:13:44,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1462, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 10:13:44,866 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand has 40 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-05 10:13:49,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:13:53,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:13:57,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:14:01,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:14:06,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:14:11,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:14:15,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:14:20,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:14:24,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-02-05 10:14:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:14:24,404 INFO L93 Difference]: Finished difference Result 220 states and 310 transitions. [2025-02-05 10:14:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-05 10:14:24,404 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 38 [2025-02-05 10:14:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:14:24,406 INFO L225 Difference]: With dead ends: 220 [2025-02-05 10:14:24,406 INFO L226 Difference]: Without dead ends: 181 [2025-02-05 10:14:24,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=730, Invalid=5912, Unknown=0, NotChecked=0, Total=6642 [2025-02-05 10:14:24,408 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 192 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 114 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:14:24,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 676 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1378 Invalid, 11 Unknown, 0 Unchecked, 38.5s Time] [2025-02-05 10:14:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-02-05 10:14:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 127. [2025-02-05 10:14:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.380952380952381) internal successors, (145), 109 states have internal predecessors, (145), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) [2025-02-05 10:14:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 182 transitions. [2025-02-05 10:14:24,435 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 182 transitions. Word has length 38 [2025-02-05 10:14:24,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:14:24,435 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 182 transitions. [2025-02-05 10:14:24,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 37 states have internal predecessors, (59), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-05 10:14:24,435 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 182 transitions. [2025-02-05 10:14:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 10:14:24,436 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:14:24,437 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:14:24,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 10:14:24,637 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 10:14:24,637 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:14:24,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:14:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash 283786810, now seen corresponding path program 2 times [2025-02-05 10:14:24,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:14:24,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398113536] [2025-02-05 10:14:24,638 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:14:24,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:14:24,644 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-05 10:14:24,676 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:14:24,676 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:14:24,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:25,810 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:14:25,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:14:25,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398113536] [2025-02-05 10:14:25,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398113536] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:25,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371812980] [2025-02-05 10:14:25,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:14:25,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:25,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:14:25,813 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 10:14:25,814 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 10:14:25,857 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-05 10:14:25,877 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:14:25,877 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:14:25,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:25,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 99 conjuncts are in the unsatisfiable core [2025-02-05 10:14:25,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:14:25,894 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 15 treesize of output 1 [2025-02-05 10:14:26,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 33 [2025-02-05 10:14:26,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:14:26,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 71 [2025-02-05 10:14:26,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-02-05 10:14:27,204 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-02-05 10:14:27,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 138 treesize of output 82 [2025-02-05 10:14:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:14:27,324 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:14:29,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 56 [2025-02-05 10:14:29,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2025-02-05 10:14:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:14:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371812980] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:14:29,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:14:29,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31, 29] total 79 [2025-02-05 10:14:29,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722466656] [2025-02-05 10:14:29,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:14:29,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-05 10:14:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:14:29,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-05 10:14:29,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=5766, Unknown=0, NotChecked=0, Total=6162 [2025-02-05 10:14:29,584 INFO L87 Difference]: Start difference. First operand 127 states and 182 transitions. Second operand has 79 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 68 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-05 10:14:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:14:33,163 INFO L93 Difference]: Finished difference Result 244 states and 337 transitions. [2025-02-05 10:14:33,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-05 10:14:33,164 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 68 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 38 [2025-02-05 10:14:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:14:33,166 INFO L225 Difference]: With dead ends: 244 [2025-02-05 10:14:33,166 INFO L226 Difference]: Without dead ends: 238 [2025-02-05 10:14:33,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3300 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=908, Invalid=12202, Unknown=0, NotChecked=0, Total=13110 [2025-02-05 10:14:33,172 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 235 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 3050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-05 10:14:33,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 581 Invalid, 3050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3002 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-05 10:14:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-02-05 10:14:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 127. [2025-02-05 10:14:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.380952380952381) internal successors, (145), 109 states have internal predecessors, (145), 12 states have call successors, (12), 6 states have call predecessors, (12), 9 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) [2025-02-05 10:14:33,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 182 transitions. [2025-02-05 10:14:33,190 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 182 transitions. Word has length 38 [2025-02-05 10:14:33,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:14:33,190 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 182 transitions. [2025-02-05 10:14:33,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 68 states have internal predecessors, (87), 9 states have call successors, (9), 3 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-05 10:14:33,190 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 182 transitions. [2025-02-05 10:14:33,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 10:14:33,191 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:14:33,192 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:14:33,208 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 10:14:33,407 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 10:14:33,408 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:14:33,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:14:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -585748682, now seen corresponding path program 3 times [2025-02-05 10:14:33,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:14:33,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727269897] [2025-02-05 10:14:33,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:14:33,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:14:33,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-02-05 10:14:33,431 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:14:33,433 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:14:33,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 10:14:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:14:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727269897] [2025-02-05 10:14:34,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727269897] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811412347] [2025-02-05 10:14:34,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:14:34,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:34,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:14:34,032 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 10:14:34,037 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 10:14:34,072 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-02-05 10:14:34,098 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:14:34,099 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-05 10:14:34,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:34,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-05 10:14:34,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:14:34,112 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 15 treesize of output 1 [2025-02-05 10:14:34,115 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 15 treesize of output 1 [2025-02-05 10:14:34,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:14:34,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 22 [2025-02-05 10:14:34,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:14:34,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2025-02-05 10:14:34,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-05 10:14:34,468 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2025-02-05 10:14:34,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 37 [2025-02-05 10:14:34,877 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:14:34,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:14:35,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 184 [2025-02-05 10:14:35,715 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:14:35,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 484 treesize of output 464 [2025-02-05 10:14:35,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 115 [2025-02-05 10:14:35,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:14:35,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 194 treesize of output 186 [2025-02-05 10:14:35,810 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 10:14:35,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811412347] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:14:35,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:14:35,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 19] total 54 [2025-02-05 10:14:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107982346] [2025-02-05 10:14:35,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:14:35,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-05 10:14:35,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:14:35,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-05 10:14:35,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2573, Unknown=0, NotChecked=0, Total=2862 [2025-02-05 10:14:35,813 INFO L87 Difference]: Start difference. First operand 127 states and 182 transitions. Second operand has 54 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 51 states have internal predecessors, (80), 9 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-05 10:14:42,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:14:42,120 INFO L93 Difference]: Finished difference Result 445 states and 617 transitions. [2025-02-05 10:14:42,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2025-02-05 10:14:42,121 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 51 states have internal predecessors, (80), 9 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) Word has length 38 [2025-02-05 10:14:42,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:14:42,123 INFO L225 Difference]: With dead ends: 445 [2025-02-05 10:14:42,123 INFO L226 Difference]: Without dead ends: 354 [2025-02-05 10:14:42,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6493 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2332, Invalid=18548, Unknown=0, NotChecked=0, Total=20880 [2025-02-05 10:14:42,127 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 654 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:14:42,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 564 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-05 10:14:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2025-02-05 10:14:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 243. [2025-02-05 10:14:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 205 states have (on average 1.3756097560975609) internal successors, (282), 212 states have internal predecessors, (282), 18 states have call successors, (18), 13 states have call predecessors, (18), 19 states have return successors, (41), 17 states have call predecessors, (41), 18 states have call successors, (41) [2025-02-05 10:14:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 341 transitions. [2025-02-05 10:14:42,162 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 341 transitions. Word has length 38 [2025-02-05 10:14:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:14:42,162 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 341 transitions. [2025-02-05 10:14:42,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 51 states have internal predecessors, (80), 9 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-05 10:14:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 341 transitions. [2025-02-05 10:14:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 10:14:42,164 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:14:42,164 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:14:42,170 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 10:14:42,368 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 10:14:42,368 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:14:42,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:14:42,368 INFO L85 PathProgramCache]: Analyzing trace with hash 409298112, now seen corresponding path program 2 times [2025-02-05 10:14:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:14:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488637160] [2025-02-05 10:14:42,368 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:14:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:14:42,373 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-05 10:14:42,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:14:42,377 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:14:42,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 10:14:42,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:14:42,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488637160] [2025-02-05 10:14:42,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488637160] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:42,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408609820] [2025-02-05 10:14:42,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:14:42,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:42,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:14:42,461 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 10:14:42,463 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 10:14:42,500 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-05 10:14:42,520 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:14:42,521 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:14:42,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:42,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 10:14:42,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:14:42,640 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-05 10:14:42,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:14:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 10:14:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408609820] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:14:42,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:14:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2025-02-05 10:14:42,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408619316] [2025-02-05 10:14:42,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:14:42,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:14:42,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:14:42,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:14:42,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:14:42,719 INFO L87 Difference]: Start difference. First operand 243 states and 341 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-05 10:14:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:14:42,901 INFO L93 Difference]: Finished difference Result 588 states and 850 transitions. [2025-02-05 10:14:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:14:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2025-02-05 10:14:42,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:14:42,904 INFO L225 Difference]: With dead ends: 588 [2025-02-05 10:14:42,905 INFO L226 Difference]: Without dead ends: 473 [2025-02-05 10:14:42,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:14:42,907 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 93 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:14:42,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 272 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:14:42,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2025-02-05 10:14:42,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 271. [2025-02-05 10:14:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 231 states have (on average 1.3722943722943723) internal successors, (317), 238 states have internal predecessors, (317), 20 states have call successors, (20), 14 states have call predecessors, (20), 19 states have return successors, (45), 18 states have call predecessors, (45), 20 states have call successors, (45) [2025-02-05 10:14:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 382 transitions. [2025-02-05 10:14:42,957 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 382 transitions. Word has length 38 [2025-02-05 10:14:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:14:42,957 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 382 transitions. [2025-02-05 10:14:42,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-05 10:14:42,958 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 382 transitions. [2025-02-05 10:14:42,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 10:14:42,959 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:14:42,959 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:14:42,965 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 10:14:43,163 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 10:14:43,163 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:14:43,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:14:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -994611739, now seen corresponding path program 1 times [2025-02-05 10:14:43,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:14:43,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182426126] [2025-02-05 10:14:43,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:14:43,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:14:43,169 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 10:14:43,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:14:43,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:14:43,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 10:14:43,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:14:43,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182426126] [2025-02-05 10:14:43,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182426126] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:43,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120451130] [2025-02-05 10:14:43,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:14:43,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:43,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:14:43,679 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 10:14:43,680 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 10:14:43,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 10:14:43,734 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:14:43,734 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:14:43,734 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:43,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-02-05 10:14:43,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:14:43,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2025-02-05 10:14:43,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:14:43,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 26 [2025-02-05 10:14:44,016 INFO L349 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2025-02-05 10:14:44,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 42 [2025-02-05 10:14:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 10:14:44,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:14:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120451130] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:44,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 10:14:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2025-02-05 10:14:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962821292] [2025-02-05 10:14:44,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 10:14:44,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-05 10:14:44,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:14:44,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-05 10:14:44,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1259, Unknown=0, NotChecked=0, Total=1406 [2025-02-05 10:14:44,475 INFO L87 Difference]: Start difference. First operand 271 states and 382 transitions. Second operand has 37 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-05 10:14:45,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:14:45,916 INFO L93 Difference]: Finished difference Result 428 states and 598 transitions. [2025-02-05 10:14:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-05 10:14:45,917 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 39 [2025-02-05 10:14:45,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:14:45,918 INFO L225 Difference]: With dead ends: 428 [2025-02-05 10:14:45,918 INFO L226 Difference]: Without dead ends: 353 [2025-02-05 10:14:45,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=413, Invalid=3493, Unknown=0, NotChecked=0, Total=3906 [2025-02-05 10:14:45,919 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 120 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-05 10:14:45,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 436 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-05 10:14:45,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2025-02-05 10:14:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 232. [2025-02-05 10:14:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 198 states have (on average 1.3585858585858586) internal successors, (269), 204 states have internal predecessors, (269), 16 states have call successors, (16), 11 states have call predecessors, (16), 17 states have return successors, (31), 16 states have call predecessors, (31), 16 states have call successors, (31) [2025-02-05 10:14:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 316 transitions. [2025-02-05 10:14:45,955 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 316 transitions. Word has length 39 [2025-02-05 10:14:45,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:14:45,955 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 316 transitions. [2025-02-05 10:14:45,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.7428571428571429) internal successors, (61), 34 states have internal predecessors, (61), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-05 10:14:45,956 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 316 transitions. [2025-02-05 10:14:45,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 10:14:45,957 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:14:45,957 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:14:45,964 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 10:14:46,157 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 10:14:46,157 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:14:46,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:14:46,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1656421536, now seen corresponding path program 4 times [2025-02-05 10:14:46,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:14:46,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781487548] [2025-02-05 10:14:46,159 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:14:46,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:14:46,167 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-05 10:14:46,184 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:14:46,184 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:14:46,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 10:14:47,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:14:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781487548] [2025-02-05 10:14:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781487548] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:14:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746850499] [2025-02-05 10:14:47,286 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:14:47,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:14:47,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:14:47,288 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 10:14:47,290 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 10:14:47,328 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-02-05 10:14:47,350 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 10:14:47,350 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:14:47,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:14:47,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 86 conjuncts are in the unsatisfiable core [2025-02-05 10:14:47,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:14:47,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 52 [2025-02-05 10:14:48,234 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2025-02-05 10:14:48,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 117