./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sep10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/sep10-2.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 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 16:56:12,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:56:12,948 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:56:12,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:56:12,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:56:12,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:56:12,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:56:12,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:56:12,971 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:56:12,971 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:56:12,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:56:12,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:56:12,972 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:56:12,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:56:12,972 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:56:12,972 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:56:12,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:56:12,972 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:56:12,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:56:12,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:56:12,973 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:56:12,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:56:12,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:56:12,974 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:56:12,974 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 -> 246513a49efb434b9c960a67f526057a6e0f9037478ee43a300fa4a565ea6e54 [2025-02-07 16:56:13,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:56:13,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:56:13,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:56:13,208 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:56:13,208 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:56:13,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sep10-2.i [2025-02-07 16:56:14,383 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a6c07b025/08324e7a89164ce3b8ee55c6ced8862c/FLAG295822f2b [2025-02-07 16:56:14,605 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:56:14,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sep10-2.i [2025-02-07 16:56:14,613 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a6c07b025/08324e7a89164ce3b8ee55c6ced8862c/FLAG295822f2b [2025-02-07 16:56:14,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a6c07b025/08324e7a89164ce3b8ee55c6ced8862c [2025-02-07 16:56:14,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:56:14,635 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:56:14,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:56:14,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:56:14,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:56:14,641 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1c6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14, skipping insertion in model container [2025-02-07 16:56:14,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:56:14,775 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/sep10-2.i[1293,1306] [2025-02-07 16:56:14,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:56:14,786 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:56:14,803 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/sep10-2.i[1293,1306] [2025-02-07 16:56:14,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:56:14,818 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:56:14,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14 WrapperNode [2025-02-07 16:56:14,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:56:14,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:56:14,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:56:14,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:56:14,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,843 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2025-02-07 16:56:14,843 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:56:14,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:56:14,844 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:56:14,844 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:56:14,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,862 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 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]. [2025-02-07 16:56:14,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,866 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,866 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,867 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:56:14,869 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:56:14,869 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:56:14,869 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:56:14,870 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (1/1) ... [2025-02-07 16:56:14,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:56:14,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:14,892 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) [2025-02-07 16:56:14,894 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 [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:56:14,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:56:14,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:56:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:56:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:56:14,912 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2025-02-07 16:56:14,912 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2025-02-07 16:56:14,960 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:56:14,963 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:56:15,080 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L31: call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2025-02-07 16:56:15,104 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-02-07 16:56:15,105 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:56:15,111 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:56:15,111 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:56:15,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:56:15 BoogieIcfgContainer [2025-02-07 16:56:15,111 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:56:15,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:56:15,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:56:15,118 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:56:15,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:56:14" (1/3) ... [2025-02-07 16:56:15,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4bb52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:56:15, skipping insertion in model container [2025-02-07 16:56:15,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:56:14" (2/3) ... [2025-02-07 16:56:15,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4bb52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:56:15, skipping insertion in model container [2025-02-07 16:56:15,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:56:15" (3/3) ... [2025-02-07 16:56:15,120 INFO L128 eAbstractionObserver]: Analyzing ICFG sep10-2.i [2025-02-07 16:56:15,130 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:56:15,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sep10-2.i that has 2 procedures, 22 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-02-07 16:56:15,173 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:56:15,182 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;@4af204ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:56:15,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:56:15,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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) [2025-02-07 16:56:15,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 16:56:15,191 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:15,192 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:56:15,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:15,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash -820940516, now seen corresponding path program 1 times [2025-02-07 16:56:15,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:15,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602660509] [2025-02-07 16:56:15,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:15,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:15,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 16:56:15,283 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 16:56:15,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:15,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 16:56:15,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:15,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602660509] [2025-02-07 16:56:15,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602660509] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:56:15,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:56:15,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 16:56:15,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405037711] [2025-02-07 16:56:15,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:56:15,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:56:15,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:15,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:56:15,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:56:15,470 INFO L87 Difference]: Start difference. First operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-02-07 16:56:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:15,498 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2025-02-07 16:56:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:56:15,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 23 [2025-02-07 16:56:15,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:15,505 INFO L225 Difference]: With dead ends: 43 [2025-02-07 16:56:15,505 INFO L226 Difference]: Without dead ends: 19 [2025-02-07 16:56:15,507 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 [2025-02-07 16:56:15,510 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 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 [2025-02-07 16:56:15,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:15,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-07 16:56:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-07 16:56:15,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2025-02-07 16:56:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2025-02-07 16:56:15,541 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 23 [2025-02-07 16:56:15,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:15,541 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2025-02-07 16:56:15,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2025-02-07 16:56:15,542 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2025-02-07 16:56:15,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-07 16:56:15,543 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:15,544 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:56:15,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:56:15,544 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:15,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:15,545 INFO L85 PathProgramCache]: Analyzing trace with hash -987061845, now seen corresponding path program 1 times [2025-02-07 16:56:15,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:15,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297459240] [2025-02-07 16:56:15,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:15,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:15,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-07 16:56:15,565 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 16:56:15,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:15,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 16:56:15,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297459240] [2025-02-07 16:56:15,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297459240] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508421960] [2025-02-07 16:56:15,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:15,687 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) [2025-02-07 16:56:15,688 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 [2025-02-07 16:56:15,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-07 16:56:15,768 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-07 16:56:15,768 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:15,768 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:15,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-07 16:56:15,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-07 16:56:15,792 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 16:56:15,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508421960] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:56:15,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 16:56:15,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-07 16:56:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993105384] [2025-02-07 16:56:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:56:15,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:56:15,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:15,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:56:15,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:56:15,794 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-07 16:56:15,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:15,808 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2025-02-07 16:56:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:56:15,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 24 [2025-02-07 16:56:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:15,810 INFO L225 Difference]: With dead ends: 37 [2025-02-07 16:56:15,810 INFO L226 Difference]: Without dead ends: 22 [2025-02-07 16:56:15,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:56:15,811 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:15,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 40 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-07 16:56:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2025-02-07 16:56:15,816 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) [2025-02-07 16:56:15,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2025-02-07 16:56:15,817 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 24 [2025-02-07 16:56:15,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:15,817 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2025-02-07 16:56:15,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2025-02-07 16:56:15,818 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2025-02-07 16:56:15,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 16:56:15,818 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:15,819 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] [2025-02-07 16:56:15,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 16:56:16,019 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 [2025-02-07 16:56:16,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:16,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash 695856718, now seen corresponding path program 1 times [2025-02-07 16:56:16,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:16,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679557620] [2025-02-07 16:56:16,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:16,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:16,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 16:56:16,044 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 16:56:16,044 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:16,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 16:56:16,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679557620] [2025-02-07 16:56:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679557620] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557570326] [2025-02-07 16:56:16,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:16,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:16,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:16,146 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) [2025-02-07 16:56:16,148 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 [2025-02-07 16:56:16,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-07 16:56:16,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 16:56:16,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:16,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:16,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-07 16:56:16,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 16:56:16,232 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 16:56:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557570326] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:56:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 16:56:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-07 16:56:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800747942] [2025-02-07 16:56:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:56:16,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:56:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:16,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:56:16,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:56:16,233 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-02-07 16:56:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:16,265 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2025-02-07 16:56:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:56:16,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 33 [2025-02-07 16:56:16,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:16,266 INFO L225 Difference]: With dead ends: 33 [2025-02-07 16:56:16,266 INFO L226 Difference]: Without dead ends: 21 [2025-02-07 16:56:16,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:56:16,267 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 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 [2025-02-07 16:56:16,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-02-07 16:56:16,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-02-07 16:56:16,269 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) [2025-02-07 16:56:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2025-02-07 16:56:16,270 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 33 [2025-02-07 16:56:16,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:16,271 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2025-02-07 16:56:16,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2025-02-07 16:56:16,271 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2025-02-07 16:56:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-07 16:56:16,273 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:16,273 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] [2025-02-07 16:56:16,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 16:56:16,473 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 [2025-02-07 16:56:16,474 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:16,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1250811837, now seen corresponding path program 1 times [2025-02-07 16:56:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:16,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672438603] [2025-02-07 16:56:16,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:16,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 16:56:16,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 16:56:16,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:16,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:56:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672438603] [2025-02-07 16:56:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672438603] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024304565] [2025-02-07 16:56:16,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:16,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:16,571 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) [2025-02-07 16:56:16,573 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 [2025-02-07 16:56:16,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-07 16:56:16,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-07 16:56:16,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:16,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:16,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:56:16,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:56:16,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:56:16,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024304565] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:16,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:16,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2025-02-07 16:56:16,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937627445] [2025-02-07 16:56:16,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:16,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 16:56:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:16,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 16:56:16,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:56:16,705 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2025-02-07 16:56:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:16,718 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2025-02-07 16:56:16,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:56:16,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 34 [2025-02-07 16:56:16,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:16,721 INFO L225 Difference]: With dead ends: 42 [2025-02-07 16:56:16,721 INFO L226 Difference]: Without dead ends: 24 [2025-02-07 16:56:16,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:56:16,722 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:16,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-07 16:56:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-02-07 16:56:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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) [2025-02-07 16:56:16,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2025-02-07 16:56:16,725 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 34 [2025-02-07 16:56:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:16,725 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2025-02-07 16:56:16,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2025-02-07 16:56:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2025-02-07 16:56:16,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-07 16:56:16,725 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:16,725 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] [2025-02-07 16:56:16,732 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 [2025-02-07 16:56:16,930 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 [2025-02-07 16:56:16,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:16,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash -162770514, now seen corresponding path program 2 times [2025-02-07 16:56:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:16,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745754146] [2025-02-07 16:56:16,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:56:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:16,943 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-07 16:56:16,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 16:56:16,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:56:16,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-07 16:56:17,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:17,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745754146] [2025-02-07 16:56:17,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745754146] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:17,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936293482] [2025-02-07 16:56:17,038 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:56:17,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:17,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:17,041 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) [2025-02-07 16:56:17,042 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 [2025-02-07 16:56:17,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-07 16:56:17,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-07 16:56:17,113 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:56:17,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:17,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 16:56:17,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:56:17,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:17,217 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-02-07 16:56:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936293482] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:17,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:17,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2025-02-07 16:56:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207198633] [2025-02-07 16:56:17,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:17,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 16:56:17,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:17,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 16:56:17,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-07 16:56:17,219 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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) [2025-02-07 16:56:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:17,242 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2025-02-07 16:56:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 16:56:17,243 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 37 [2025-02-07 16:56:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:17,243 INFO L225 Difference]: With dead ends: 53 [2025-02-07 16:56:17,243 INFO L226 Difference]: Without dead ends: 35 [2025-02-07 16:56:17,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-07 16:56:17,244 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:17,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-07 16:56:17,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2025-02-07 16:56:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2025-02-07 16:56:17,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2025-02-07 16:56:17,249 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 37 [2025-02-07 16:56:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:17,249 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2025-02-07 16:56:17,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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) [2025-02-07 16:56:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2025-02-07 16:56:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-07 16:56:17,251 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:17,251 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] [2025-02-07 16:56:17,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 16:56:17,451 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 [2025-02-07 16:56:17,452 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:17,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1775175243, now seen corresponding path program 3 times [2025-02-07 16:56:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:17,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079968037] [2025-02-07 16:56:17,452 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:56:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:17,464 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 6 equivalence classes. [2025-02-07 16:56:17,486 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 52 statements. [2025-02-07 16:56:17,486 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 16:56:17,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-02-07 16:56:17,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:17,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079968037] [2025-02-07 16:56:17,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079968037] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:17,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072519813] [2025-02-07 16:56:17,561 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:56:17,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:17,564 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) [2025-02-07 16:56:17,566 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 [2025-02-07 16:56:17,612 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 52 statements into 6 equivalence classes. [2025-02-07 16:56:17,634 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 52 statements. [2025-02-07 16:56:17,634 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-07 16:56:17,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:17,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:56:17,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-07 16:56:17,648 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:17,670 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-02-07 16:56:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072519813] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:17,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-07 16:56:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564659695] [2025-02-07 16:56:17,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:17,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 16:56:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:17,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 16:56:17,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:56:17,671 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2025-02-07 16:56:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:17,684 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2025-02-07 16:56:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:56:17,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 52 [2025-02-07 16:56:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:17,685 INFO L225 Difference]: With dead ends: 51 [2025-02-07 16:56:17,685 INFO L226 Difference]: Without dead ends: 36 [2025-02-07 16:56:17,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:56:17,685 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:17,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-07 16:56:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-07 16:56:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 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) [2025-02-07 16:56:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2025-02-07 16:56:17,689 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 52 [2025-02-07 16:56:17,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:17,689 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2025-02-07 16:56:17,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2025-02-07 16:56:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2025-02-07 16:56:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-07 16:56:17,690 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:17,690 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] [2025-02-07 16:56:17,696 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 [2025-02-07 16:56:17,894 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 [2025-02-07 16:56:17,894 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:17,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash 82339548, now seen corresponding path program 4 times [2025-02-07 16:56:17,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:17,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258058880] [2025-02-07 16:56:17,894 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:56:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:17,907 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-07 16:56:17,930 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 16:56:17,930 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:56:17,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:18,004 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-07 16:56:18,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258058880] [2025-02-07 16:56:18,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258058880] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:18,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451999072] [2025-02-07 16:56:18,005 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:56:18,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:18,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:18,007 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) [2025-02-07 16:56:18,009 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 [2025-02-07 16:56:18,067 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 55 statements into 2 equivalence classes. [2025-02-07 16:56:18,104 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-02-07 16:56:18,104 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:56:18,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:18,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 16:56:18,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-02-07 16:56:18,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-07 16:56:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451999072] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:18,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-07 16:56:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145259747] [2025-02-07 16:56:18,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:18,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 16:56:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:18,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 16:56:18,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-07 16:56:18,156 INFO L87 Difference]: Start difference. First operand 36 states and 42 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, (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) [2025-02-07 16:56:18,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:18,188 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2025-02-07 16:56:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 16:56:18,189 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, (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 55 [2025-02-07 16:56:18,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:18,189 INFO L225 Difference]: With dead ends: 71 [2025-02-07 16:56:18,189 INFO L226 Difference]: Without dead ends: 48 [2025-02-07 16:56:18,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-02-07 16:56:18,190 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:18,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 65 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:18,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-07 16:56:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-02-07 16:56:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 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) [2025-02-07 16:56:18,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2025-02-07 16:56:18,194 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 55 [2025-02-07 16:56:18,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:18,195 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2025-02-07 16:56:18,195 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, (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) [2025-02-07 16:56:18,195 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2025-02-07 16:56:18,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-07 16:56:18,195 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:18,196 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] [2025-02-07 16:56:18,202 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 [2025-02-07 16:56:18,396 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 [2025-02-07 16:56:18,396 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:18,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1192419356, now seen corresponding path program 5 times [2025-02-07 16:56:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:18,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103905643] [2025-02-07 16:56:18,397 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:56:18,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:18,420 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 91 statements into 14 equivalence classes. [2025-02-07 16:56:18,542 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 91 statements. [2025-02-07 16:56:18,543 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-07 16:56:18,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:18,750 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 123 proven. 174 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-07 16:56:18,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:18,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103905643] [2025-02-07 16:56:18,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103905643] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054419301] [2025-02-07 16:56:18,752 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:56:18,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:18,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:18,754 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) [2025-02-07 16:56:18,756 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 [2025-02-07 16:56:18,815 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 91 statements into 14 equivalence classes. [2025-02-07 16:56:18,985 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 91 statements. [2025-02-07 16:56:18,985 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-07 16:56:18,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:18,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 16:56:18,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2025-02-07 16:56:19,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-02-07 16:56:19,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054419301] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:19,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:19,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-02-07 16:56:19,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720838785] [2025-02-07 16:56:19,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:19,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-07 16:56:19,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:19,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-07 16:56:19,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-07 16:56:19,110 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 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) [2025-02-07 16:56:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:19,152 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2025-02-07 16:56:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 16:56:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 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 91 [2025-02-07 16:56:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:19,153 INFO L225 Difference]: With dead ends: 95 [2025-02-07 16:56:19,153 INFO L226 Difference]: Without dead ends: 60 [2025-02-07 16:56:19,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2025-02-07 16:56:19,153 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:19,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 107 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-07 16:56:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-07 16:56:19,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 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) [2025-02-07 16:56:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2025-02-07 16:56:19,170 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 91 [2025-02-07 16:56:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:19,170 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2025-02-07 16:56:19,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 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) [2025-02-07 16:56:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2025-02-07 16:56:19,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-02-07 16:56:19,171 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:19,171 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:56:19,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 16:56:19,371 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 [2025-02-07 16:56:19,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:19,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1452328612, now seen corresponding path program 6 times [2025-02-07 16:56:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:19,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941085293] [2025-02-07 16:56:19,372 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:56:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:19,390 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 22 equivalence classes. [2025-02-07 16:56:19,424 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 51 of 127 statements. [2025-02-07 16:56:19,425 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 16:56:19,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2025-02-07 16:56:19,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:19,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941085293] [2025-02-07 16:56:19,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941085293] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:19,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676633762] [2025-02-07 16:56:19,526 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:56:19,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:19,530 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) [2025-02-07 16:56:19,533 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 [2025-02-07 16:56:19,598 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 22 equivalence classes. [2025-02-07 16:56:19,639 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 51 of 127 statements. [2025-02-07 16:56:19,639 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 16:56:19,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:19,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 16:56:19,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 648 proven. 10 refuted. 0 times theorem prover too weak. 814 trivial. 0 not checked. [2025-02-07 16:56:19,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:19,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1462 trivial. 0 not checked. [2025-02-07 16:56:19,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676633762] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:19,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:19,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-07 16:56:19,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110830403] [2025-02-07 16:56:19,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:19,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 16:56:19,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:19,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 16:56:19,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2025-02-07 16:56:19,720 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2025-02-07 16:56:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:19,737 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2025-02-07 16:56:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 16:56:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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 127 [2025-02-07 16:56:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:19,738 INFO L225 Difference]: With dead ends: 104 [2025-02-07 16:56:19,738 INFO L226 Difference]: Without dead ends: 65 [2025-02-07 16:56:19,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=79, Unknown=0, NotChecked=0, Total=156 [2025-02-07 16:56:19,739 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:19,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:56:19,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-07 16:56:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2025-02-07 16:56:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 60 states have internal predecessors, (73), 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) [2025-02-07 16:56:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2025-02-07 16:56:19,743 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 127 [2025-02-07 16:56:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:19,744 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2025-02-07 16:56:19,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 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) [2025-02-07 16:56:19,744 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2025-02-07 16:56:19,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-07 16:56:19,748 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:19,748 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 10, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:56:19,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 16:56:19,948 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 [2025-02-07 16:56:19,949 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:19,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:19,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1004846517, now seen corresponding path program 7 times [2025-02-07 16:56:19,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:19,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929048248] [2025-02-07 16:56:19,949 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:56:19,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:19,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-07 16:56:20,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 16:56:20,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:20,321 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:22,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 2 proven. 1307 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2025-02-07 16:56:22,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:22,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929048248] [2025-02-07 16:56:22,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929048248] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:22,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536831923] [2025-02-07 16:56:22,593 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:56:22,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:22,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:22,596 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) [2025-02-07 16:56:22,597 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 [2025-02-07 16:56:22,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-07 16:56:22,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 16:56:22,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:22,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:22,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 145 conjuncts are in the unsatisfiable core [2025-02-07 16:56:22,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-02-07 16:56:23,000 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-02-07 16:56:23,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536831923] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:23,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:23,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 34 [2025-02-07 16:56:23,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190845365] [2025-02-07 16:56:23,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:23,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-07 16:56:23,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:23,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-07 16:56:23,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 16:56:23,739 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 30 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 16:56:24,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:24,147 INFO L93 Difference]: Finished difference Result 216 states and 285 transitions. [2025-02-07 16:56:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-07 16:56:24,148 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 30 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 132 [2025-02-07 16:56:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:24,151 INFO L225 Difference]: With dead ends: 216 [2025-02-07 16:56:24,151 INFO L226 Difference]: Without dead ends: 212 [2025-02-07 16:56:24,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=1036, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 16:56:24,153 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:24,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 840 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-07 16:56:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2025-02-07 16:56:24,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 196. [2025-02-07 16:56:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 188 states have (on average 1.3191489361702127) internal successors, (248), 189 states have internal predecessors, (248), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-07 16:56:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 262 transitions. [2025-02-07 16:56:24,172 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 262 transitions. Word has length 132 [2025-02-07 16:56:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:24,172 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 262 transitions. [2025-02-07 16:56:24,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 30 states have internal predecessors, (81), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 16:56:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 262 transitions. [2025-02-07 16:56:24,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-07 16:56:24,181 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:24,182 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:56:24,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-07 16:56:24,383 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 [2025-02-07 16:56:24,383 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:24,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:24,383 INFO L85 PathProgramCache]: Analyzing trace with hash 737963818, now seen corresponding path program 1 times [2025-02-07 16:56:24,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:24,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617428938] [2025-02-07 16:56:24,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:24,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:24,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-07 16:56:24,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 16:56:24,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:24,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 267 proven. 1028 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2025-02-07 16:56:27,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:27,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617428938] [2025-02-07 16:56:27,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617428938] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:27,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096779133] [2025-02-07 16:56:27,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:56:27,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:27,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:27,179 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) [2025-02-07 16:56:27,180 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 [2025-02-07 16:56:27,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 132 statements into 1 equivalence classes. [2025-02-07 16:56:27,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 16:56:27,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:56:27,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:27,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-02-07 16:56:27,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:27,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-07 16:56:27,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2025-02-07 16:56:27,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-02-07 16:56:27,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-07 16:56:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 6 proven. 1210 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2025-02-07 16:56:28,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:29,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 385 proven. 774 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2025-02-07 16:56:29,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096779133] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:29,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:29,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 34, 22] total 74 [2025-02-07 16:56:29,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162225781] [2025-02-07 16:56:29,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:29,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2025-02-07 16:56:29,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:29,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2025-02-07 16:56:29,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=5124, Unknown=0, NotChecked=0, Total=5402 [2025-02-07 16:56:29,777 INFO L87 Difference]: Start difference. First operand 196 states and 262 transitions. Second operand has 74 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 71 states have internal predecessors, (178), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-07 16:56:35,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:35,558 INFO L93 Difference]: Finished difference Result 1239 states and 1765 transitions. [2025-02-07 16:56:35,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2025-02-07 16:56:35,559 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 71 states have internal predecessors, (178), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 132 [2025-02-07 16:56:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:35,564 INFO L225 Difference]: With dead ends: 1239 [2025-02-07 16:56:35,565 INFO L226 Difference]: Without dead ends: 1144 [2025-02-07 16:56:35,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 278 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6067 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1435, Invalid=21517, Unknown=0, NotChecked=0, Total=22952 [2025-02-07 16:56:35,575 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 187 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 5612 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 5620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:35,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 2765 Invalid, 5620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 5612 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-07 16:56:35,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2025-02-07 16:56:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 648. [2025-02-07 16:56:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 630 states have (on average 1.3523809523809525) internal successors, (852), 635 states have internal predecessors, (852), 9 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2025-02-07 16:56:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 886 transitions. [2025-02-07 16:56:35,643 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 886 transitions. Word has length 132 [2025-02-07 16:56:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:35,646 INFO L471 AbstractCegarLoop]: Abstraction has 648 states and 886 transitions. [2025-02-07 16:56:35,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 72 states have (on average 2.4722222222222223) internal successors, (178), 71 states have internal predecessors, (178), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2025-02-07 16:56:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 886 transitions. [2025-02-07 16:56:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-07 16:56:35,652 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:35,652 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:56:35,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-07 16:56:35,856 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 [2025-02-07 16:56:35,856 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:35,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1493169420, now seen corresponding path program 2 times [2025-02-07 16:56:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:35,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108652447] [2025-02-07 16:56:35,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:56:35,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:35,870 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-02-07 16:56:36,085 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 16:56:36,085 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:56:36,085 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 28 proven. 1398 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2025-02-07 16:56:39,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108652447] [2025-02-07 16:56:39,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108652447] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:39,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353242083] [2025-02-07 16:56:39,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:56:39,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:39,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:39,591 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) [2025-02-07 16:56:39,592 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 [2025-02-07 16:56:39,663 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 132 statements into 2 equivalence classes. [2025-02-07 16:56:39,718 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 132 of 132 statements. [2025-02-07 16:56:39,719 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:56:39,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:39,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 121 conjuncts are in the unsatisfiable core [2025-02-07 16:56:39,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:40,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2025-02-07 16:56:40,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:40,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:40,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:40,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:40,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:40,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:40,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:40,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2025-02-07 16:56:40,588 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:40,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2025-02-07 16:56:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 673 proven. 685 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2025-02-07 16:56:41,372 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:42,941 INFO L349 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2025-02-07 16:56:42,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2025-02-07 16:56:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 689 proven. 613 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-02-07 16:56:43,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353242083] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:43,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:43,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 36] total 107 [2025-02-07 16:56:43,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315538716] [2025-02-07 16:56:43,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:43,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2025-02-07 16:56:43,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:43,543 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2025-02-07 16:56:43,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=10844, Unknown=0, NotChecked=0, Total=11342 [2025-02-07 16:56:43,545 INFO L87 Difference]: Start difference. First operand 648 states and 886 transitions. Second operand has 107 states, 107 states have (on average 2.1588785046728973) internal successors, (231), 105 states have internal predecessors, (231), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-07 16:56:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:56:48,274 INFO L93 Difference]: Finished difference Result 2944 states and 4204 transitions. [2025-02-07 16:56:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2025-02-07 16:56:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.1588785046728973) internal successors, (231), 105 states have internal predecessors, (231), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 132 [2025-02-07 16:56:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:56:48,285 INFO L225 Difference]: With dead ends: 2944 [2025-02-07 16:56:48,285 INFO L226 Difference]: Without dead ends: 2163 [2025-02-07 16:56:48,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5604 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1067, Invalid=18955, Unknown=0, NotChecked=0, Total=20022 [2025-02-07 16:56:48,294 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 149 mSDsluCounter, 3939 mSDsCounter, 0 mSdLazyCounter, 7835 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 7860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 7835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:56:48,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 4013 Invalid, 7860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 7835 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2025-02-07 16:56:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2025-02-07 16:56:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1464. [2025-02-07 16:56:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1428 states have (on average 1.3536414565826331) internal successors, (1933), 1439 states have internal predecessors, (1933), 17 states have call successors, (17), 7 states have call predecessors, (17), 18 states have return successors, (65), 17 states have call predecessors, (65), 17 states have call successors, (65) [2025-02-07 16:56:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2015 transitions. [2025-02-07 16:56:48,431 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2015 transitions. Word has length 132 [2025-02-07 16:56:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:56:48,432 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 2015 transitions. [2025-02-07 16:56:48,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.1588785046728973) internal successors, (231), 105 states have internal predecessors, (231), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-07 16:56:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2015 transitions. [2025-02-07 16:56:48,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-07 16:56:48,438 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:56:48,438 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 10, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:56:48,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-07 16:56:48,638 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 [2025-02-07 16:56:48,639 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:56:48,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:56:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1510405142, now seen corresponding path program 3 times [2025-02-07 16:56:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:56:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413858140] [2025-02-07 16:56:48,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:56:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:56:48,655 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 132 statements into 22 equivalence classes. [2025-02-07 16:56:48,825 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 120 of 132 statements. [2025-02-07 16:56:48,825 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-02-07 16:56:48,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 759 proven. 199 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2025-02-07 16:56:50,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:56:50,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413858140] [2025-02-07 16:56:50,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413858140] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:56:50,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534511035] [2025-02-07 16:56:50,598 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:56:50,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:56:50,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:56:50,600 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) [2025-02-07 16:56:50,612 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 [2025-02-07 16:56:50,694 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 132 statements into 22 equivalence classes. [2025-02-07 16:56:51,273 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 120 of 132 statements. [2025-02-07 16:56:51,273 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-02-07 16:56:51,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:56:51,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 112 conjuncts are in the unsatisfiable core [2025-02-07 16:56:51,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:56:51,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-02-07 16:56:51,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-02-07 16:56:51,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2025-02-07 16:56:51,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2025-02-07 16:56:51,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:51,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:51,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:51,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:51,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:51,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 37 [2025-02-07 16:56:51,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2025-02-07 16:56:51,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:51,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 30 [2025-02-07 16:56:52,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-07 16:56:52,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 23 [2025-02-07 16:56:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 658 proven. 586 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2025-02-07 16:56:52,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:56:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 689 proven. 543 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2025-02-07 16:56:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534511035] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:56:53,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:56:53,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 36, 33] total 89 [2025-02-07 16:56:53,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970626035] [2025-02-07 16:56:53,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:56:53,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2025-02-07 16:56:53,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:56:53,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2025-02-07 16:56:53,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=7160, Unknown=0, NotChecked=0, Total=7832 [2025-02-07 16:56:53,865 INFO L87 Difference]: Start difference. First operand 1464 states and 2015 transitions. Second operand has 89 states, 87 states have (on average 1.8735632183908046) internal successors, (163), 86 states have internal predecessors, (163), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8)