./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/max40-1.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/reducercommutativity/max40-1.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 a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:04:26,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:04:26,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:04:26,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:04:26,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:04:26,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:04:26,358 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:04:26,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:04:26,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:04:26,358 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:04:26,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:04:26,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:04:26,359 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:04:26,359 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:04:26,360 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:04:26,360 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:04:26,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:04:26,360 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 -> a8d5806586012290ae42296af495175d1f0a3275a3232981eda33ec55888f6d2 [2025-02-05 10:04:26,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:04:26,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:04:26,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:04:26,585 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:04:26,585 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:04:26,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/max40-1.i [2025-02-05 10:04:27,771 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9e51d814f/b0da5a84f50d45e39fc86c9682e4c064/FLAG0e960eb69 [2025-02-05 10:04:28,002 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:04:28,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/reducercommutativity/max40-1.i [2025-02-05 10:04:28,013 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9e51d814f/b0da5a84f50d45e39fc86c9682e4c064/FLAG0e960eb69 [2025-02-05 10:04:28,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9e51d814f/b0da5a84f50d45e39fc86c9682e4c064 [2025-02-05 10:04:28,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:04:28,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:04:28,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:04:28,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:04:28,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:04:28,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47254d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28, skipping insertion in model container [2025-02-05 10:04:28,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:04:28,461 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/reducercommutativity/max40-1.i[1290,1303] [2025-02-05 10:04:28,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:04:28,469 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:04:28,480 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/reducercommutativity/max40-1.i[1290,1303] [2025-02-05 10:04:28,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:04:28,492 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:04:28,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28 WrapperNode [2025-02-05 10:04:28,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:04:28,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:04:28,494 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:04:28,494 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:04:28,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,518 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2025-02-05 10:04:28,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:04:28,520 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:04:28,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:04:28,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:04:28,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,546 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-02-05 10:04:28,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,551 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:04:28,558 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:04:28,558 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:04:28,558 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:04:28,558 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (1/1) ... [2025-02-05 10:04:28,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:04:28,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:28,591 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 10:04:28,595 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 10:04:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:04:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure max [2025-02-05 10:04:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2025-02-05 10:04:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:04:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:04:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:04:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:04:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:04:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:04:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:04:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:04:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:04:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:04:28,673 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:04:28,674 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:04:28,782 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L28: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2025-02-05 10:04:28,790 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2025-02-05 10:04:28,791 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:04:28,797 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:04:28,799 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:04:28,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:04:28 BoogieIcfgContainer [2025-02-05 10:04:28,800 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:04:28,802 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:04:28,803 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:04:28,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:04:28,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:04:28" (1/3) ... [2025-02-05 10:04:28,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485fe8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:04:28, skipping insertion in model container [2025-02-05 10:04:28,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:04:28" (2/3) ... [2025-02-05 10:04:28,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485fe8d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:04:28, skipping insertion in model container [2025-02-05 10:04:28,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:04:28" (3/3) ... [2025-02-05 10:04:28,809 INFO L128 eAbstractionObserver]: Analyzing ICFG max40-1.i [2025-02-05 10:04:28,820 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:04:28,824 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG max40-1.i that has 2 procedures, 23 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-05 10:04:28,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:04:28,872 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;@736dbca7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:04:28,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:04:28,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.3529411764705883) 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 10:04:28,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 10:04:28,881 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:28,882 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:28,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:28,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1825817222, now seen corresponding path program 1 times [2025-02-05 10:04:28,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:28,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388188068] [2025-02-05 10:04:28,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:04:28,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:28,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 10:04:28,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 10:04:28,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:28,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:29,126 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 10:04:29,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:29,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388188068] [2025-02-05 10:04:29,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388188068] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:04:29,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:04:29,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:04:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25063503] [2025-02-05 10:04:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:04:29,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:04:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:29,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:04:29,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:04:29,145 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.3529411764705883) 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) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 10:04:29,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:29,162 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2025-02-05 10:04:29,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:04:29,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 24 [2025-02-05 10:04:29,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:29,167 INFO L225 Difference]: With dead ends: 44 [2025-02-05 10:04:29,168 INFO L226 Difference]: Without dead ends: 20 [2025-02-05 10:04:29,169 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 10:04:29,171 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:29,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:29,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-05 10:04:29,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-05 10:04:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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 10:04:29,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2025-02-05 10:04:29,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 24 [2025-02-05 10:04:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:29,194 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2025-02-05 10:04:29,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 10:04:29,194 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2025-02-05 10:04:29,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-05 10:04:29,195 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:29,195 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 10:04:29,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:04:29,196 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:29,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:29,196 INFO L85 PathProgramCache]: Analyzing trace with hash 931786130, now seen corresponding path program 1 times [2025-02-05 10:04:29,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:29,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012729323] [2025-02-05 10:04:29,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:04:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:29,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:04:29,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:04:29,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:29,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:29,287 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 10:04:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012729323] [2025-02-05 10:04:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012729323] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302352652] [2025-02-05 10:04:29,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:04:29,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:29,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:29,296 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 10:04:29,310 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 10:04:29,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-05 10:04:29,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-05 10:04:29,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:29,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:29,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:04:29,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:29,418 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 10:04:29,419 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:04:29,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302352652] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:04:29,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:04:29,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 10:04:29,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645463768] [2025-02-05 10:04:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:04:29,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:04:29,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:29,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:04:29,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:04:29,421 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:04:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:29,437 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2025-02-05 10:04:29,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:04:29,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-02-05 10:04:29,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:29,440 INFO L225 Difference]: With dead ends: 38 [2025-02-05 10:04:29,440 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 10:04:29,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:04:29,440 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:29,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 10:04:29,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2025-02-05 10:04:29,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 10:04:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2025-02-05 10:04:29,448 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 25 [2025-02-05 10:04:29,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:29,448 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2025-02-05 10:04:29,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:04:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2025-02-05 10:04:29,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 10:04:29,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:29,449 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:29,457 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 10:04:29,649 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 10:04:29,650 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:29,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1233153597, now seen corresponding path program 1 times [2025-02-05 10:04:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298160356] [2025-02-05 10:04:29,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:04:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:29,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 10:04:29,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:04:29,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:29,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 10:04:29,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:29,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298160356] [2025-02-05 10:04:29,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298160356] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:29,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349067913] [2025-02-05 10:04:29,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:04:29,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:29,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:29,773 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 10:04:29,774 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 10:04:29,808 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-05 10:04:29,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:04:29,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:29,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:29,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 10:04:29,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-05 10:04:29,845 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 10:04:29,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349067913] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:04:29,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 10:04:29,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 10:04:29,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663743613] [2025-02-05 10:04:29,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:04:29,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:04:29,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:29,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:04:29,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:04:29,847 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:04:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:29,857 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2025-02-05 10:04:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:04:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2025-02-05 10:04:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:29,859 INFO L225 Difference]: With dead ends: 34 [2025-02-05 10:04:29,859 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 10:04:29,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 10:04:29,859 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:29,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 10:04:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-05 10:04:29,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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 10:04:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2025-02-05 10:04:29,885 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 34 [2025-02-05 10:04:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:29,886 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2025-02-05 10:04:29,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-05 10:04:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2025-02-05 10:04:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-05 10:04:29,886 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:29,886 INFO L218 NwaCegarLoop]: trace histogram [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 10:04:29,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 10:04:30,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:30,092 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:30,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1894170635, now seen corresponding path program 1 times [2025-02-05 10:04:30,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:30,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171292672] [2025-02-05 10:04:30,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:04:30,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:30,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-05 10:04:30,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:04:30,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:30,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 10:04:30,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:30,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171292672] [2025-02-05 10:04:30,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171292672] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:30,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841244957] [2025-02-05 10:04:30,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:04:30,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:30,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:30,207 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 10:04:30,215 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 10:04:30,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-05 10:04:30,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-05 10:04:30,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:30,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:30,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 10:04:30,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:30,319 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 10:04:30,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 10:04:30,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841244957] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:30,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:30,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 10:04:30,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176510298] [2025-02-05 10:04:30,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:30,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 10:04:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:30,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 10:04:30,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:04:30,359 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:04:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:30,371 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2025-02-05 10:04:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 10:04:30,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 35 [2025-02-05 10:04:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:30,373 INFO L225 Difference]: With dead ends: 43 [2025-02-05 10:04:30,373 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 10:04:30,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:04:30,373 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:30,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 10:04:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2025-02-05 10:04:30,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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 10:04:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2025-02-05 10:04:30,379 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 35 [2025-02-05 10:04:30,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:30,379 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2025-02-05 10:04:30,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:04:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2025-02-05 10:04:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-05 10:04:30,381 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:30,381 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:30,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 10:04:30,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:30,583 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:30,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1933667363, now seen corresponding path program 2 times [2025-02-05 10:04:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:30,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523389282] [2025-02-05 10:04:30,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:04:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:30,601 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-05 10:04:30,618 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:04:30,618 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:04:30,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-05 10:04:30,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:30,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523389282] [2025-02-05 10:04:30,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523389282] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:30,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724811054] [2025-02-05 10:04:30,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:04:30,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:30,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:30,693 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 10:04:30,695 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 10:04:30,737 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-02-05 10:04:30,759 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-02-05 10:04:30,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:04:30,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:30,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:04:30,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 10:04:30,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-05 10:04:30,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724811054] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:30,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:30,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-02-05 10:04:30,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884263129] [2025-02-05 10:04:30,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:30,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 10:04:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:30,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 10:04:30,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:04:30,876 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:04:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:30,917 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2025-02-05 10:04:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 10:04:30,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2025-02-05 10:04:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:30,918 INFO L225 Difference]: With dead ends: 54 [2025-02-05 10:04:30,918 INFO L226 Difference]: Without dead ends: 36 [2025-02-05 10:04:30,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 10:04:30,919 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:30,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 93 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:30,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-05 10:04:30,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2025-02-05 10:04:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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 10:04:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2025-02-05 10:04:30,923 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 38 [2025-02-05 10:04:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:30,923 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2025-02-05 10:04:30,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:04:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2025-02-05 10:04:30,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-05 10:04:30,924 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:30,924 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:30,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 10:04:31,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:31,129 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:31,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash -931593962, now seen corresponding path program 3 times [2025-02-05 10:04:31,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:31,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949021233] [2025-02-05 10:04:31,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:04:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:31,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 6 equivalence classes. [2025-02-05 10:04:31,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 53 statements. [2025-02-05 10:04:31,159 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:04:31,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-02-05 10:04:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949021233] [2025-02-05 10:04:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949021233] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267826023] [2025-02-05 10:04:31,238 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:04:31,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:31,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:31,240 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 10:04:31,243 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 10:04:31,295 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 6 equivalence classes. [2025-02-05 10:04:31,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 53 statements. [2025-02-05 10:04:31,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 10:04:31,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:31,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 10:04:31,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:31,338 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-05 10:04:31,338 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-02-05 10:04:31,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267826023] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:31,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:31,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 10:04:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617199641] [2025-02-05 10:04:31,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:31,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 10:04:31,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:31,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 10:04:31,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:04:31,377 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:04:31,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:31,390 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2025-02-05 10:04:31,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 10:04:31,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2025-02-05 10:04:31,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:31,391 INFO L225 Difference]: With dead ends: 52 [2025-02-05 10:04:31,391 INFO L226 Difference]: Without dead ends: 37 [2025-02-05 10:04:31,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:04:31,392 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:31,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:31,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-05 10:04:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-05 10:04:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 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 10:04:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2025-02-05 10:04:31,395 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 53 [2025-02-05 10:04:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:31,395 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2025-02-05 10:04:31,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:04:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2025-02-05 10:04:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-05 10:04:31,396 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:31,396 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:31,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 10:04:31,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:31,600 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:31,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1423900378, now seen corresponding path program 4 times [2025-02-05 10:04:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918381485] [2025-02-05 10:04:31,601 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:04:31,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:31,614 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-05 10:04:31,624 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-05 10:04:31,624 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:04:31,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-05 10:04:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918381485] [2025-02-05 10:04:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918381485] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780981980] [2025-02-05 10:04:31,697 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:04:31,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:31,701 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 10:04:31,703 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 10:04:31,752 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-05 10:04:31,789 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-05 10:04:31,789 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:04:31,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:31,791 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 10:04:31,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-02-05 10:04:31,808 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-05 10:04:31,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780981980] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:31,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:31,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-05 10:04:31,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362263620] [2025-02-05 10:04:31,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:31,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 10:04:31,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:31,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 10:04:31,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-05 10:04:31,855 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 10:04:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:31,879 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2025-02-05 10:04:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 10:04:31,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2025-02-05 10:04:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:31,880 INFO L225 Difference]: With dead ends: 72 [2025-02-05 10:04:31,880 INFO L226 Difference]: Without dead ends: 49 [2025-02-05 10:04:31,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-05 10:04:31,881 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:31,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-05 10:04:31,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-02-05 10:04:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 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 10:04:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2025-02-05 10:04:31,885 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 56 [2025-02-05 10:04:31,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:31,885 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2025-02-05 10:04:31,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 10:04:31,885 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2025-02-05 10:04:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-05 10:04:31,886 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:31,886 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:31,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 10:04:32,086 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,SelfDestructingSolverStorable6 [2025-02-05 10:04:32,087 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:32,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:32,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1208008090, now seen corresponding path program 5 times [2025-02-05 10:04:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860082087] [2025-02-05 10:04:32,088 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:04:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:32,102 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 92 statements into 14 equivalence classes. [2025-02-05 10:04:32,183 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 92 statements. [2025-02-05 10:04:32,183 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-05 10:04:32,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 123 proven. 174 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-05 10:04:32,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:32,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860082087] [2025-02-05 10:04:32,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860082087] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:32,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138163457] [2025-02-05 10:04:32,380 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:04:32,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:32,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:32,388 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 10:04:32,389 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 10:04:32,455 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 92 statements into 14 equivalence classes. [2025-02-05 10:04:32,565 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 92 statements. [2025-02-05 10:04:32,565 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-05 10:04:32,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:32,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 10:04:32,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2025-02-05 10:04:32,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-05 10:04:32,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138163457] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:32,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:32,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-02-05 10:04:32,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092816844] [2025-02-05 10:04:32,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:32,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-05 10:04:32,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:32,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-05 10:04:32,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-02-05 10:04:32,702 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:04:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:32,757 INFO L93 Difference]: Finished difference Result 108 states and 145 transitions. [2025-02-05 10:04:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 10:04:32,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2025-02-05 10:04:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:32,758 INFO L225 Difference]: With dead ends: 108 [2025-02-05 10:04:32,758 INFO L226 Difference]: Without dead ends: 73 [2025-02-05 10:04:32,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-02-05 10:04:32,759 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 31 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:32,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-05 10:04:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2025-02-05 10:04:32,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 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 10:04:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 91 transitions. [2025-02-05 10:04:32,764 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 91 transitions. Word has length 92 [2025-02-05 10:04:32,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:32,764 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 91 transitions. [2025-02-05 10:04:32,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-05 10:04:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 91 transitions. [2025-02-05 10:04:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-05 10:04:32,766 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:32,766 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:32,773 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 10:04:32,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:32,967 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:32,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash 815864602, now seen corresponding path program 6 times [2025-02-05 10:04:32,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801375149] [2025-02-05 10:04:32,967 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:04:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:33,007 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 164 statements into 30 equivalence classes. [2025-02-05 10:04:33,056 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 164 statements. [2025-02-05 10:04:33,057 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 10:04:33,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801375149] [2025-02-05 10:04:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801375149] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:33,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10805318] [2025-02-05 10:04:33,138 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:04:33,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:33,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:33,140 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 10:04:33,145 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 10:04:33,232 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 164 statements into 30 equivalence classes. [2025-02-05 10:04:33,340 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 164 statements. [2025-02-05 10:04:33,340 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 10:04:33,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:33,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:04:33,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 1240 proven. 10 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2025-02-05 10:04:33,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:33,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10805318] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:33,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:33,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 10:04:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656108922] [2025-02-05 10:04:33,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:33,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 10:04:33,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:33,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 10:04:33,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 10:04:33,419 INFO L87 Difference]: Start difference. First operand 73 states and 91 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:04:33,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:33,434 INFO L93 Difference]: Finished difference Result 130 states and 168 transitions. [2025-02-05 10:04:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 10:04:33,435 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2025-02-05 10:04:33,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:33,436 INFO L225 Difference]: With dead ends: 130 [2025-02-05 10:04:33,436 INFO L226 Difference]: Without dead ends: 79 [2025-02-05 10:04:33,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 10:04:33,437 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:33,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:33,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-02-05 10:04:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-02-05 10:04:33,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 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 10:04:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2025-02-05 10:04:33,442 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 164 [2025-02-05 10:04:33,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:33,442 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2025-02-05 10:04:33,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:04:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2025-02-05 10:04:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-05 10:04:33,444 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:33,444 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:33,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 10:04:33,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:33,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:33,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1974783590, now seen corresponding path program 7 times [2025-02-05 10:04:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:33,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608112681] [2025-02-05 10:04:33,645 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:04:33,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:33,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 10:04:33,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 10:04:33,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:33,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:34,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:34,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:34,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608112681] [2025-02-05 10:04:34,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608112681] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:34,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527042328] [2025-02-05 10:04:34,032 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:04:34,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:34,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:34,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:04:34,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 10:04:34,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-05 10:04:34,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-05 10:04:34,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:04:34,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:34,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:04:34,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:34,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:34,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:34,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527042328] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:34,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:34,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 10:04:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575657096] [2025-02-05 10:04:34,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:34,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 10:04:34,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:34,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 10:04:34,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:04:34,422 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:04:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:34,445 INFO L93 Difference]: Finished difference Result 157 states and 204 transitions. [2025-02-05 10:04:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 10:04:34,445 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 170 [2025-02-05 10:04:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:34,446 INFO L225 Difference]: With dead ends: 157 [2025-02-05 10:04:34,446 INFO L226 Difference]: Without dead ends: 91 [2025-02-05 10:04:34,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:04:34,447 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:34,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-05 10:04:34,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-02-05 10:04:34,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.197674418604651) internal successors, (103), 86 states have internal predecessors, (103), 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 10:04:34,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2025-02-05 10:04:34,452 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 170 [2025-02-05 10:04:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:34,453 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2025-02-05 10:04:34,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:04:34,453 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2025-02-05 10:04:34,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-02-05 10:04:34,454 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:34,454 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 22, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:34,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 10:04:34,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:34,655 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:34,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1619493786, now seen corresponding path program 8 times [2025-02-05 10:04:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:34,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056985032] [2025-02-05 10:04:34,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:04:34,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:34,680 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 182 statements into 2 equivalence classes. [2025-02-05 10:04:34,731 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 182 of 182 statements. [2025-02-05 10:04:34,731 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:04:34,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056985032] [2025-02-05 10:04:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056985032] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76499450] [2025-02-05 10:04:35,638 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:04:35,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:35,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:35,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:04:35,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 10:04:35,746 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 182 statements into 2 equivalence classes. [2025-02-05 10:04:35,825 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 182 of 182 statements. [2025-02-05 10:04:35,825 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:04:35,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:35,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 10:04:35,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:35,890 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-02-05 10:04:36,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76499450] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:36,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:36,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 43 [2025-02-05 10:04:36,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958371816] [2025-02-05 10:04:36,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:36,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-05 10:04:36,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:36,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-05 10:04:36,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 10:04:36,655 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 43 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:04:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:36,706 INFO L93 Difference]: Finished difference Result 175 states and 228 transitions. [2025-02-05 10:04:36,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-05 10:04:36,707 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 182 [2025-02-05 10:04:36,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:36,708 INFO L225 Difference]: With dead ends: 175 [2025-02-05 10:04:36,708 INFO L226 Difference]: Without dead ends: 109 [2025-02-05 10:04:36,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 340 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2025-02-05 10:04:36,712 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:36,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-05 10:04:36,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2025-02-05 10:04:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 104 states have internal predecessors, (121), 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 10:04:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2025-02-05 10:04:36,724 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 182 [2025-02-05 10:04:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:36,724 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2025-02-05 10:04:36,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-02-05 10:04:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2025-02-05 10:04:36,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2025-02-05 10:04:36,727 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:36,727 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:36,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 10:04:36,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:36,928 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:36,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:36,928 INFO L85 PathProgramCache]: Analyzing trace with hash -797876582, now seen corresponding path program 9 times [2025-02-05 10:04:36,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:36,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005776478] [2025-02-05 10:04:36,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:04:36,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:36,970 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 200 statements into 30 equivalence classes. [2025-02-05 10:04:37,036 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 73 of 200 statements. [2025-02-05 10:04:37,036 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 10:04:37,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:37,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3541 trivial. 0 not checked. [2025-02-05 10:04:37,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:37,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005776478] [2025-02-05 10:04:37,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005776478] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:37,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949037589] [2025-02-05 10:04:37,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:04:37,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:37,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:37,315 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:04:37,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 10:04:37,459 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 200 statements into 30 equivalence classes. [2025-02-05 10:04:37,809 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 73 of 200 statements. [2025-02-05 10:04:37,809 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-05 10:04:37,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:37,815 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:04:37,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 1240 proven. 55 refuted. 0 times theorem prover too weak. 2301 trivial. 0 not checked. [2025-02-05 10:04:37,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3596 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3541 trivial. 0 not checked. [2025-02-05 10:04:38,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949037589] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:38,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:38,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 10:04:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512693480] [2025-02-05 10:04:38,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:38,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 10:04:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:38,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 10:04:38,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:04:38,049 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:04:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:38,092 INFO L93 Difference]: Finished difference Result 172 states and 216 transitions. [2025-02-05 10:04:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 10:04:38,093 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 200 [2025-02-05 10:04:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:38,094 INFO L225 Difference]: With dead ends: 172 [2025-02-05 10:04:38,095 INFO L226 Difference]: Without dead ends: 121 [2025-02-05 10:04:38,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:04:38,096 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:38,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:04:38,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-05 10:04:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2025-02-05 10:04:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 116 states have (on average 1.146551724137931) internal successors, (133), 116 states have internal predecessors, (133), 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 10:04:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2025-02-05 10:04:38,108 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 200 [2025-02-05 10:04:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:38,108 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2025-02-05 10:04:38,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 10:04:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2025-02-05 10:04:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-02-05 10:04:38,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:38,109 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:38,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 10:04:38,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 10:04:38,311 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:38,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:38,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1397658726, now seen corresponding path program 10 times [2025-02-05 10:04:38,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:38,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700268087] [2025-02-05 10:04:38,311 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:04:38,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:38,365 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 212 statements into 2 equivalence classes. [2025-02-05 10:04:38,441 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 212 of 212 statements. [2025-02-05 10:04:38,441 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:04:38,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3794 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 2269 trivial. 0 not checked. [2025-02-05 10:04:38,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700268087] [2025-02-05 10:04:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700268087] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754807157] [2025-02-05 10:04:38,982 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:04:38,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:38,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:38,988 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:04:38,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 10:04:39,122 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 212 statements into 2 equivalence classes. [2025-02-05 10:04:39,222 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 212 of 212 statements. [2025-02-05 10:04:39,222 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:04:39,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:39,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 10:04:39,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:04:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3794 backedges. 1236 proven. 287 refuted. 0 times theorem prover too weak. 2271 trivial. 0 not checked. [2025-02-05 10:04:39,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:04:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3794 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 2269 trivial. 0 not checked. [2025-02-05 10:04:39,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754807157] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:04:39,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:04:39,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-02-05 10:04:39,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236740476] [2025-02-05 10:04:39,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:04:39,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 10:04:39,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:04:39,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 10:04:39,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-02-05 10:04:39,626 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 10:04:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:04:39,719 INFO L93 Difference]: Finished difference Result 246 states and 315 transitions. [2025-02-05 10:04:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-05 10:04:39,721 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 212 [2025-02-05 10:04:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:04:39,722 INFO L225 Difference]: With dead ends: 246 [2025-02-05 10:04:39,722 INFO L226 Difference]: Without dead ends: 169 [2025-02-05 10:04:39,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-02-05 10:04:39,725 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 87 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:04:39,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 140 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:04:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-02-05 10:04:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-02-05 10:04:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 164 states have (on average 1.201219512195122) internal successors, (197), 164 states have internal predecessors, (197), 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 10:04:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 203 transitions. [2025-02-05 10:04:39,737 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 203 transitions. Word has length 212 [2025-02-05 10:04:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:04:39,737 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 203 transitions. [2025-02-05 10:04:39,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-05 10:04:39,738 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 203 transitions. [2025-02-05 10:04:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-02-05 10:04:39,740 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:04:39,740 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 40, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:04:39,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 10:04:39,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:39,941 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:04:39,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:04:39,942 INFO L85 PathProgramCache]: Analyzing trace with hash 19244698, now seen corresponding path program 11 times [2025-02-05 10:04:39,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:04:39,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24575815] [2025-02-05 10:04:39,942 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:04:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:04:39,979 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 356 statements into 62 equivalence classes. [2025-02-05 10:04:41,107 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) and asserted 345 of 356 statements. [2025-02-05 10:04:41,108 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2025-02-05 10:04:41,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:04:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 13370 backedges. 2763 proven. 4098 refuted. 0 times theorem prover too weak. 6509 trivial. 0 not checked. [2025-02-05 10:04:42,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:04:42,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24575815] [2025-02-05 10:04:42,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24575815] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:04:42,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281633694] [2025-02-05 10:04:42,180 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:04:42,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:04:42,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:04:42,186 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:04:42,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 10:04:42,376 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 356 statements into 62 equivalence classes.