./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c --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/nla-digbench-scaling/cohendiv-ll_valuebound1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 35aee247a9d57b19731affe394846ba9ce20d46b03fd5dbce1e446f98386181b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 20:28:11,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 20:28:11,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 20:28:11,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 20:28:11,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 20:28:11,980 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 20:28:11,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 20:28:11,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 20:28:11,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 20:28:11,981 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 20:28:11,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 20:28:11,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 20:28:11,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 20:28:11,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 20:28:11,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 20:28:11,983 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:28:11,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 20:28:11,983 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 20:28:11,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 20:28:11,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 20:28:11,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 20:28:11,984 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 -> 35aee247a9d57b19731affe394846ba9ce20d46b03fd5dbce1e446f98386181b [2025-02-07 20:28:12,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 20:28:12,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 20:28:12,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 20:28:12,211 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 20:28:12,211 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 20:28:12,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2025-02-07 20:28:13,311 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a6822c737/64574880fc174be390c24810f5341091/FLAG288118737 [2025-02-07 20:28:13,530 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 20:28:13,534 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2025-02-07 20:28:13,542 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a6822c737/64574880fc174be390c24810f5341091/FLAG288118737 [2025-02-07 20:28:13,866 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a6822c737/64574880fc174be390c24810f5341091 [2025-02-07 20:28:13,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 20:28:13,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 20:28:13,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 20:28:13,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 20:28:13,873 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 20:28:13,873 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:13,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1536527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13, skipping insertion in model container [2025-02-07 20:28:13,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:13,882 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 20:28:13,961 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/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2025-02-07 20:28:13,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:28:13,975 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 20:28:13,981 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/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2025-02-07 20:28:13,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 20:28:13,992 INFO L204 MainTranslator]: Completed translation [2025-02-07 20:28:13,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13 WrapperNode [2025-02-07 20:28:13,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 20:28:13,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 20:28:13,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 20:28:13,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 20:28:13,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,011 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2025-02-07 20:28:14,012 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 20:28:14,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 20:28:14,013 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 20:28:14,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 20:28:14,017 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,018 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,030 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-07 20:28:14,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,031 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,032 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 20:28:14,034 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 20:28:14,034 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 20:28:14,034 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 20:28:14,035 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (1/1) ... [2025-02-07 20:28:14,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 20:28:14,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:14,055 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 20:28:14,059 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 20:28:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 20:28:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-07 20:28:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-07 20:28:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 20:28:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 20:28:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 20:28:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-07 20:28:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-07 20:28:14,106 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 20:28:14,108 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 20:28:14,184 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-02-07 20:28:14,185 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 20:28:14,190 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 20:28:14,190 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 20:28:14,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:28:14 BoogieIcfgContainer [2025-02-07 20:28:14,191 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 20:28:14,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 20:28:14,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 20:28:14,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 20:28:14,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 08:28:13" (1/3) ... [2025-02-07 20:28:14,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7742062e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:28:14, skipping insertion in model container [2025-02-07 20:28:14,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 08:28:13" (2/3) ... [2025-02-07 20:28:14,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7742062e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 08:28:14, skipping insertion in model container [2025-02-07 20:28:14,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:28:14" (3/3) ... [2025-02-07 20:28:14,196 INFO L128 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.c [2025-02-07 20:28:14,204 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 20:28:14,205 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohendiv-ll_valuebound1.c that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-07 20:28:14,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 20:28:14,238 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;@720ac8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 20:28:14,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 20:28:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-07 20:28:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 20:28:14,244 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:14,244 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 20:28:14,244 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:14,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1546020981, now seen corresponding path program 1 times [2025-02-07 20:28:14,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:14,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337668434] [2025-02-07 20:28:14,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:14,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:14,290 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 20:28:14,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:28:14,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:14,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 20:28:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337668434] [2025-02-07 20:28:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337668434] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:28:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2743451] [2025-02-07 20:28:14,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:14,331 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 20:28:14,333 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 20:28:14,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 20:28:14,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:28:14,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:14,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:14,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-07 20:28:14,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 20:28:14,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:28:14,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2743451] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:28:14,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:28:14,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-07 20:28:14,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681674548] [2025-02-07 20:28:14,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:28:14,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-07 20:28:14,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:14,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-07 20:28:14,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:28:14,398 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 20:28:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:14,409 INFO L93 Difference]: Finished difference Result 62 states and 97 transitions. [2025-02-07 20:28:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-07 20:28:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2025-02-07 20:28:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:14,413 INFO L225 Difference]: With dead ends: 62 [2025-02-07 20:28:14,413 INFO L226 Difference]: Without dead ends: 29 [2025-02-07 20:28:14,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-07 20:28:14,417 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:14,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:28:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-07 20:28:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-02-07 20:28:14,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-02-07 20:28:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2025-02-07 20:28:14,437 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 23 [2025-02-07 20:28:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:14,437 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2025-02-07 20:28:14,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 20:28:14,437 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2025-02-07 20:28:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 20:28:14,438 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:14,438 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 20:28:14,444 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 20:28:14,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-07 20:28:14,639 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:14,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash 27109002, now seen corresponding path program 1 times [2025-02-07 20:28:14,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:14,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026323984] [2025-02-07 20:28:14,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:14,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:14,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 20:28:14,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:28:14,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:14,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:28:14,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454189330] [2025-02-07 20:28:14,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:14,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:14,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:14,662 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 20:28:14,663 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 20:28:14,688 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 20:28:14,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 20:28:14,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:14,699 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:14,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:28:14,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:14,778 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 20:28:14,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:28:14,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:14,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026323984] [2025-02-07 20:28:14,779 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:28:14,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454189330] [2025-02-07 20:28:14,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454189330] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:28:14,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:28:14,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:28:14,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039684289] [2025-02-07 20:28:14,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:28:14,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:28:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:14,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:28:14,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:28:14,780 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 20:28:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:14,835 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2025-02-07 20:28:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:28:14,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 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 20:28:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:14,840 INFO L225 Difference]: With dead ends: 40 [2025-02-07 20:28:14,840 INFO L226 Difference]: Without dead ends: 38 [2025-02-07 20:28:14,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:28:14,840 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:14,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 127 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:28:14,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-07 20:28:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2025-02-07 20:28:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-07 20:28:14,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2025-02-07 20:28:14,850 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 23 [2025-02-07 20:28:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:14,850 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2025-02-07 20:28:14,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-07 20:28:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2025-02-07 20:28:14,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-07 20:28:14,855 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:14,855 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:14,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 20:28:15,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:15,055 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:15,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:15,056 INFO L85 PathProgramCache]: Analyzing trace with hash -418973288, now seen corresponding path program 1 times [2025-02-07 20:28:15,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:15,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646435213] [2025-02-07 20:28:15,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:15,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:15,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 20:28:15,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:28:15,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:15,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:28:15,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044313269] [2025-02-07 20:28:15,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:15,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:15,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:15,093 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 20:28:15,093 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 20:28:15,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-07 20:28:15,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-07 20:28:15,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:15,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:15,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:28:15,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-07 20:28:15,172 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:28:15,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:15,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646435213] [2025-02-07 20:28:15,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:28:15,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044313269] [2025-02-07 20:28:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044313269] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:28:15,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:28:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:28:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14101822] [2025-02-07 20:28:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:28:15,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:28:15,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:15,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:28:15,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:28:15,173 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:28:15,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:15,232 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2025-02-07 20:28:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:28:15,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-02-07 20:28:15,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:15,233 INFO L225 Difference]: With dead ends: 52 [2025-02-07 20:28:15,234 INFO L226 Difference]: Without dead ends: 49 [2025-02-07 20:28:15,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:28:15,234 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:15,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 116 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:28:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-07 20:28:15,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2025-02-07 20:28:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-07 20:28:15,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2025-02-07 20:28:15,240 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 28 [2025-02-07 20:28:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:15,241 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2025-02-07 20:28:15,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 20:28:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2025-02-07 20:28:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-07 20:28:15,241 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:15,241 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:15,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 20:28:15,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:15,446 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:15,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash 834691749, now seen corresponding path program 1 times [2025-02-07 20:28:15,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:15,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744245704] [2025-02-07 20:28:15,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:15,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 20:28:15,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 20:28:15,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:15,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:28:15,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165760791] [2025-02-07 20:28:15,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:15,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:15,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:15,465 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 20:28:15,467 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 20:28:15,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-07 20:28:15,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-07 20:28:15,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:15,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:15,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:28:15,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 20:28:15,529 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:28:15,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:15,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744245704] [2025-02-07 20:28:15,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:28:15,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165760791] [2025-02-07 20:28:15,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165760791] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:28:15,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 20:28:15,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 20:28:15,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597336476] [2025-02-07 20:28:15,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:28:15,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:28:15,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:15,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:28:15,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 20:28:15,531 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-07 20:28:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:15,583 INFO L93 Difference]: Finished difference Result 74 states and 100 transitions. [2025-02-07 20:28:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:28:15,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2025-02-07 20:28:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:15,584 INFO L225 Difference]: With dead ends: 74 [2025-02-07 20:28:15,584 INFO L226 Difference]: Without dead ends: 72 [2025-02-07 20:28:15,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 20:28:15,587 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:15,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 129 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:28:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-02-07 20:28:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2025-02-07 20:28:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-07 20:28:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2025-02-07 20:28:15,596 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 87 transitions. Word has length 35 [2025-02-07 20:28:15,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:15,596 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 87 transitions. [2025-02-07 20:28:15,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-02-07 20:28:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 87 transitions. [2025-02-07 20:28:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-07 20:28:15,597 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:15,597 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:15,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 20:28:15,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:15,801 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:15,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:15,802 INFO L85 PathProgramCache]: Analyzing trace with hash 668282341, now seen corresponding path program 1 times [2025-02-07 20:28:15,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:15,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187250071] [2025-02-07 20:28:15,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:15,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:15,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-07 20:28:15,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-07 20:28:15,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:15,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 20:28:16,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187250071] [2025-02-07 20:28:16,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187250071] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:28:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51570401] [2025-02-07 20:28:16,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:16,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:16,094 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 20:28:16,098 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 20:28:16,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-07 20:28:16,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-07 20:28:16,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:16,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:16,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-07 20:28:16,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 20:28:16,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:28:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-07 20:28:16,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51570401] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:28:16,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:28:16,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2025-02-07 20:28:16,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971369428] [2025-02-07 20:28:16,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:28:16,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 20:28:16,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:16,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 20:28:16,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:28:16,302 INFO L87 Difference]: Start difference. First operand 65 states and 87 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-07 20:28:16,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:16,388 INFO L93 Difference]: Finished difference Result 73 states and 94 transitions. [2025-02-07 20:28:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 20:28:16,388 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 45 [2025-02-07 20:28:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:16,393 INFO L225 Difference]: With dead ends: 73 [2025-02-07 20:28:16,393 INFO L226 Difference]: Without dead ends: 71 [2025-02-07 20:28:16,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-02-07 20:28:16,394 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 15 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:16,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 206 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:28:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-07 20:28:16,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2025-02-07 20:28:16,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 41 states have internal predecessors, (45), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-02-07 20:28:16,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 90 transitions. [2025-02-07 20:28:16,402 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 90 transitions. Word has length 45 [2025-02-07 20:28:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:16,402 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 90 transitions. [2025-02-07 20:28:16,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-07 20:28:16,402 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 90 transitions. [2025-02-07 20:28:16,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-07 20:28:16,403 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:16,403 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:16,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 20:28:16,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:16,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:16,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2114002657, now seen corresponding path program 1 times [2025-02-07 20:28:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898128530] [2025-02-07 20:28:16,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:16,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-07 20:28:16,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 20:28:16,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:16,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 20:28:16,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:16,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898128530] [2025-02-07 20:28:16,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898128530] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:28:16,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511621791] [2025-02-07 20:28:16,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:16,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:16,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:16,754 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 20:28:16,755 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 20:28:16,775 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-07 20:28:16,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-07 20:28:16,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:16,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:16,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-07 20:28:16,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-02-07 20:28:16,857 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:28:16,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511621791] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:28:16,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:28:16,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-02-07 20:28:16,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562920009] [2025-02-07 20:28:16,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:28:16,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 20:28:16,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:16,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 20:28:16,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-07 20:28:16,858 INFO L87 Difference]: Start difference. First operand 69 states and 90 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-07 20:28:17,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:17,000 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2025-02-07 20:28:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 20:28:17,001 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2025-02-07 20:28:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:17,002 INFO L225 Difference]: With dead ends: 82 [2025-02-07 20:28:17,002 INFO L226 Difference]: Without dead ends: 80 [2025-02-07 20:28:17,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:28:17,002 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:17,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 162 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:28:17,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-07 20:28:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2025-02-07 20:28:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 46 states have internal predecessors, (48), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-07 20:28:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 97 transitions. [2025-02-07 20:28:17,015 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 97 transitions. Word has length 51 [2025-02-07 20:28:17,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:17,015 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 97 transitions. [2025-02-07 20:28:17,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-07 20:28:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 97 transitions. [2025-02-07 20:28:17,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-07 20:28:17,016 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:17,016 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:17,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 20:28:17,221 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,SelfDestructingSolverStorable5 [2025-02-07 20:28:17,221 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:17,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1578743678, now seen corresponding path program 1 times [2025-02-07 20:28:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:17,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059060529] [2025-02-07 20:28:17,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:17,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:17,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-07 20:28:17,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 20:28:17,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:17,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-07 20:28:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449976249] [2025-02-07 20:28:17,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:17,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:17,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:17,242 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 20:28:17,244 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 20:28:17,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-07 20:28:17,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 20:28:17,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:17,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:17,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 20:28:17,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-07 20:28:17,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:28:17,789 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-07 20:28:17,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:17,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059060529] [2025-02-07 20:28:17,789 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-07 20:28:17,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449976249] [2025-02-07 20:28:17,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449976249] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-07 20:28:17,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:28:17,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2025-02-07 20:28:17,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926204846] [2025-02-07 20:28:17,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:28:17,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-07 20:28:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:17,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-07 20:28:17,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-02-07 20:28:17,791 INFO L87 Difference]: Start difference. First operand 75 states and 97 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-07 20:28:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:17,883 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2025-02-07 20:28:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:28:17,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 58 [2025-02-07 20:28:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:17,887 INFO L225 Difference]: With dead ends: 81 [2025-02-07 20:28:17,887 INFO L226 Difference]: Without dead ends: 78 [2025-02-07 20:28:17,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2025-02-07 20:28:17,888 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:17,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 147 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:28:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-07 20:28:17,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2025-02-07 20:28:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 48 states have internal predecessors, (50), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-07 20:28:17,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2025-02-07 20:28:17,913 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 58 [2025-02-07 20:28:17,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:17,913 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2025-02-07 20:28:17,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-02-07 20:28:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2025-02-07 20:28:17,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-02-07 20:28:17,915 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:17,915 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:17,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 20:28:18,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:18,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:18,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:18,117 INFO L85 PathProgramCache]: Analyzing trace with hash 773056572, now seen corresponding path program 1 times [2025-02-07 20:28:18,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:18,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797181235] [2025-02-07 20:28:18,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:18,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:18,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-07 20:28:18,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-07 20:28:18,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:18,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2025-02-07 20:28:18,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797181235] [2025-02-07 20:28:18,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797181235] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:28:18,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277591365] [2025-02-07 20:28:18,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:18,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:18,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:18,284 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 20:28:18,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 20:28:18,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-02-07 20:28:18,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-02-07 20:28:18,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:18,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:18,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-07 20:28:18,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2025-02-07 20:28:18,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:28:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2025-02-07 20:28:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277591365] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:28:18,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:28:18,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-02-07 20:28:18,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902882065] [2025-02-07 20:28:18,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:28:18,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 20:28:18,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:18,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 20:28:18,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-07 20:28:18,463 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-07 20:28:18,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:18,547 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2025-02-07 20:28:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 20:28:18,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 74 [2025-02-07 20:28:18,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:18,548 INFO L225 Difference]: With dead ends: 88 [2025-02-07 20:28:18,548 INFO L226 Difference]: Without dead ends: 86 [2025-02-07 20:28:18,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:28:18,549 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:18,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 112 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 20:28:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-02-07 20:28:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 63. [2025-02-07 20:28:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 39 states have internal predecessors, (42), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-07 20:28:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2025-02-07 20:28:18,559 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 74 [2025-02-07 20:28:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:18,562 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2025-02-07 20:28:18,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-02-07 20:28:18,563 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2025-02-07 20:28:18,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-02-07 20:28:18,563 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:18,563 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:18,573 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 20:28:18,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:18,764 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:18,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:18,764 INFO L85 PathProgramCache]: Analyzing trace with hash -972736321, now seen corresponding path program 2 times [2025-02-07 20:28:18,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:18,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180852013] [2025-02-07 20:28:18,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:28:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:18,769 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-02-07 20:28:18,778 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-02-07 20:28:18,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:28:18,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2025-02-07 20:28:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180852013] [2025-02-07 20:28:18,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180852013] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:28:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504534522] [2025-02-07 20:28:18,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 20:28:18,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:18,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:18,936 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 20:28:18,937 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 20:28:18,959 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-02-07 20:28:18,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-02-07 20:28:18,991 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 20:28:18,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:18,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 20:28:18,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-02-07 20:28:19,052 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 20:28:19,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504534522] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 20:28:19,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 20:28:19,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2025-02-07 20:28:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162197952] [2025-02-07 20:28:19,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 20:28:19,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 20:28:19,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:19,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 20:28:19,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-02-07 20:28:19,053 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-07 20:28:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:19,115 INFO L93 Difference]: Finished difference Result 112 states and 136 transitions. [2025-02-07 20:28:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 20:28:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 75 [2025-02-07 20:28:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:19,116 INFO L225 Difference]: With dead ends: 112 [2025-02-07 20:28:19,116 INFO L226 Difference]: Without dead ends: 77 [2025-02-07 20:28:19,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-02-07 20:28:19,117 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:19,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 95 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 20:28:19,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-07 20:28:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2025-02-07 20:28:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-02-07 20:28:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2025-02-07 20:28:19,129 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 75 [2025-02-07 20:28:19,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:19,129 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2025-02-07 20:28:19,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-07 20:28:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2025-02-07 20:28:19,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-07 20:28:19,130 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 20:28:19,130 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:19,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-07 20:28:19,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:19,334 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 20:28:19,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 20:28:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 246282460, now seen corresponding path program 1 times [2025-02-07 20:28:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 20:28:19,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443268180] [2025-02-07 20:28:19,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 20:28:19,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-07 20:28:19,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-07 20:28:19,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:19,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-02-07 20:28:19,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 20:28:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443268180] [2025-02-07 20:28:19,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443268180] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 20:28:19,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324611368] [2025-02-07 20:28:19,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 20:28:19,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 20:28:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 20:28:19,445 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 20:28:19,446 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 20:28:19,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-02-07 20:28:19,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-02-07 20:28:19,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 20:28:19,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 20:28:19,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 20:28:19,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 20:28:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-02-07 20:28:19,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 20:28:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 35 proven. 8 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-02-07 20:28:19,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324611368] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 20:28:19,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 20:28:19,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2025-02-07 20:28:19,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057930995] [2025-02-07 20:28:19,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 20:28:19,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-07 20:28:19,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 20:28:19,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-07 20:28:19,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-02-07 20:28:19,804 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-02-07 20:28:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 20:28:20,289 INFO L93 Difference]: Finished difference Result 140 states and 181 transitions. [2025-02-07 20:28:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-07 20:28:20,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 98 [2025-02-07 20:28:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 20:28:20,290 INFO L225 Difference]: With dead ends: 140 [2025-02-07 20:28:20,290 INFO L226 Difference]: Without dead ends: 0 [2025-02-07 20:28:20,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 185 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2025-02-07 20:28:20,291 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 54 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 20:28:20,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 457 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 20:28:20,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-07 20:28:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-07 20:28:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 20:28:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-07 20:28:20,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 98 [2025-02-07 20:28:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 20:28:20,293 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-07 20:28:20,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 17 states have internal predecessors, (44), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-02-07 20:28:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-07 20:28:20,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-07 20:28:20,295 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 20:28:20,303 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 20:28:20,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-07 20:28:20,498 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 20:28:20,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-07 20:28:21,673 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 20:28:21,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 08:28:21 BoogieIcfgContainer [2025-02-07 20:28:21,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 20:28:21,691 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 20:28:21,691 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 20:28:21,692 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 20:28:21,692 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 08:28:14" (3/4) ... [2025-02-07 20:28:21,693 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-07 20:28:21,697 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-02-07 20:28:21,697 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-07 20:28:21,701 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-02-07 20:28:21,701 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-07 20:28:21,701 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-07 20:28:21,701 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-07 20:28:21,756 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 20:28:21,757 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 20:28:21,757 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 20:28:21,757 INFO L158 Benchmark]: Toolchain (without parser) took 7888.34ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 105.9MB in the beginning and 182.9MB in the end (delta: -77.0MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2025-02-07 20:28:21,757 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:28:21,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 123.90ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 95.4MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:28:21,758 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.92ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 94.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:28:21,758 INFO L158 Benchmark]: Boogie Preprocessor took 20.95ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 20:28:21,759 INFO L158 Benchmark]: IcfgBuilder took 156.74ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 80.8MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 20:28:21,759 INFO L158 Benchmark]: TraceAbstraction took 7499.05ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 80.8MB in the beginning and 191.1MB in the end (delta: -110.4MB). Peak memory consumption was 134.7MB. Max. memory is 16.1GB. [2025-02-07 20:28:21,759 INFO L158 Benchmark]: Witness Printer took 65.36ms. Allocated memory is still 285.2MB. Free memory was 191.1MB in the beginning and 182.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 20:28:21,760 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 127.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 123.90ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 95.4MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.92ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 94.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.95ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 93.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 156.74ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 80.8MB in the end (delta: 12.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7499.05ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 80.8MB in the beginning and 191.1MB in the end (delta: -110.4MB). Peak memory consumption was 134.7MB. Max. memory is 16.1GB. * Witness Printer took 65.36ms. Allocated memory is still 285.2MB. Free memory was 191.1MB in the beginning and 182.9MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.3s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 155 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 1592 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1237 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 742 IncrementalHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 355 mSDtfsCounter, 742 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 852 GetRequests, 732 SyntacticMatches, 9 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1020 NumberOfCodeBlocks, 1020 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1131 ConstructedInterpolants, 0 QuantifiedInterpolants, 2458 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1227 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 2404/2505 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Location Invariant Derived location invariant: ((((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (b <= ((__int128) r + y))) && (0 <= r)) && (x <= 1)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) || (((((((((__int128) a * y) + r) == ((__int128) b + x)) && (0 <= r)) && (r == x)) && (q == 0)) && (x <= 1)) && (b < ((long long) y + 1)))) - InvariantResult [Line: 38]: Location Invariant Derived location invariant: ((((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (x <= 1)) && (0 <= ((__int128) r + y))) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) || ((((((((__int128) r + 1) <= y) && (0 <= x)) && (x == (r + ((__int128) q * y)))) && (b <= y)) && (x <= 1)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y))))) || ((((((b == 0) && (0 <= r)) && (r == x)) && (q == 0)) && (x <= 1)) && (a == 0))) RESULT: Ultimate proved your program to be correct! [2025-02-07 20:28:21,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE