./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb960067570884de0638f14e8f74b0912d9ff4ed83f9c3c33e6cd3e420d05661 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:00:53,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:00:53,501 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:00:53,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:00:53,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:00:53,525 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:00:53,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:00:53,526 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:00:53,527 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:00:53,527 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:00:53,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:00:53,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:00:53,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:00:53,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:00:53,528 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:00:53,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:00:53,529 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:00:53,530 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:00:53,530 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:00:53,530 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:00:53,530 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:00:53,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:00:53,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:00:53,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:00:53,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:00:53,531 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:00:53,531 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 -> fb960067570884de0638f14e8f74b0912d9ff4ed83f9c3c33e6cd3e420d05661 [2025-02-05 10:00:53,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:00:53,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:00:53,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:00:53,786 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:00:53,787 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:00:53,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i [2025-02-05 10:00:55,622 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aab607340/0a26c7522cfb45aab464921cd9ada48e/FLAG2875e8194 [2025-02-05 10:00:55,846 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:00:55,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i [2025-02-05 10:00:55,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aab607340/0a26c7522cfb45aab464921cd9ada48e/FLAG2875e8194 [2025-02-05 10:00:55,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aab607340/0a26c7522cfb45aab464921cd9ada48e [2025-02-05 10:00:55,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:00:55,906 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:00:55,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:00:55,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:00:55,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:00:55,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:00:55" (1/1) ... [2025-02-05 10:00:55,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2aba0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:55, skipping insertion in model container [2025-02-05 10:00:55,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:00:55" (1/1) ... [2025-02-05 10:00:55,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:00:56,046 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i[814,827] [2025-02-05 10:00:56,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:00:56,062 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:00:56,071 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_assert_loop_dep.i[814,827] [2025-02-05 10:00:56,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:00:56,087 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:00:56,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56 WrapperNode [2025-02-05 10:00:56,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:00:56,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:00:56,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:00:56,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:00:56,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,102 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,113 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2025-02-05 10:00:56,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:00:56,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:00:56,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:00:56,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:00:56,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,127 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,135 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-05 10:00:56,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,139 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,142 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,144 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,144 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:00:56,146 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:00:56,146 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:00:56,146 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:00:56,148 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (1/1) ... [2025-02-05 10:00:56,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:00:56,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:00:56,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 10:00:56,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 10:00:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:00:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:00:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:00:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 10:00:56,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:00:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:00:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:00:56,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:00:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:00:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:00:56,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 10:00:56,236 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:00:56,237 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:00:56,325 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2025-02-05 10:00:56,328 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-05 10:00:56,328 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:00:56,334 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:00:56,334 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:00:56,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:00:56 BoogieIcfgContainer [2025-02-05 10:00:56,334 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:00:56,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:00:56,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:00:56,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:00:56,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:00:55" (1/3) ... [2025-02-05 10:00:56,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3620beab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:00:56, skipping insertion in model container [2025-02-05 10:00:56,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:00:56" (2/3) ... [2025-02-05 10:00:56,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3620beab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:00:56, skipping insertion in model container [2025-02-05 10:00:56,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:00:56" (3/3) ... [2025-02-05 10:00:56,341 INFO L128 eAbstractionObserver]: Analyzing ICFG array_assert_loop_dep.i [2025-02-05 10:00:56,351 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:00:56,353 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_assert_loop_dep.i that has 1 procedures, 13 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 10:00:56,400 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:00:56,413 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;@52e2c5f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:00:56,413 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:00:56,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-05 10:00:56,420 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:00:56,420 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-05 10:00:56,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:00:56,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:00:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1359822046, now seen corresponding path program 1 times [2025-02-05 10:00:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:00:56,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478744095] [2025-02-05 10:00:56,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:00:56,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:00:56,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-05 10:00:56,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-05 10:00:56,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:00:56,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:56,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:56,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:00:56,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478744095] [2025-02-05 10:00:56,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478744095] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:00:56,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:00:56,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:00:56,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633048585] [2025-02-05 10:00:56,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:00:56,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:00:56,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:00:56,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:00:56,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:00:56,601 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:00:56,635 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2025-02-05 10:00:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:00:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-05 10:00:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:00:56,641 INFO L225 Difference]: With dead ends: 31 [2025-02-05 10:00:56,641 INFO L226 Difference]: Without dead ends: 18 [2025-02-05 10:00:56,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:00:56,648 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:00:56,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:00:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-02-05 10:00:56,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2025-02-05 10:00:56,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2025-02-05 10:00:56,672 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2025-02-05 10:00:56,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:00:56,672 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-02-05 10:00:56,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2025-02-05 10:00:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-05 10:00:56,674 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:00:56,674 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:00:56,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:00:56,675 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:00:56,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:00:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash -794234260, now seen corresponding path program 1 times [2025-02-05 10:00:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:00:56,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561284615] [2025-02-05 10:00:56,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:00:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:00:56,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 10:00:56,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 10:00:56,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:00:56,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:56,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:00:56,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561284615] [2025-02-05 10:00:56,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561284615] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:00:56,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731883290] [2025-02-05 10:00:56,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:00:56,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:00:56,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:00:56,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:00:56,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 10:00:56,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 10:00:56,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 10:00:56,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:00:56,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:56,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 10:00:56,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:00:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:56,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:00:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:56,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731883290] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:00:56,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:00:56,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 10:00:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090326894] [2025-02-05 10:00:56,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:00:56,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 10:00:56,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:00:56,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 10:00:56,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:00:56,868 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:00:56,926 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2025-02-05 10:00:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 10:00:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-05 10:00:56,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:00:56,927 INFO L225 Difference]: With dead ends: 47 [2025-02-05 10:00:56,927 INFO L226 Difference]: Without dead ends: 36 [2025-02-05 10:00:56,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 10:00:56,927 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:00:56,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 25 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:00:56,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-05 10:00:56,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 23. [2025-02-05 10:00:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-02-05 10:00:56,931 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 7 [2025-02-05 10:00:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:00:56,931 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-02-05 10:00:56,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-02-05 10:00:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:00:56,932 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:00:56,932 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2025-02-05 10:00:56,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 10:00:57,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:00:57,133 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:00:57,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:00:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash 890581086, now seen corresponding path program 2 times [2025-02-05 10:00:57,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:00:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822342616] [2025-02-05 10:00:57,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:00:57,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:00:57,142 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-02-05 10:00:57,157 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:00:57,157 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:00:57,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:57,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:00:57,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822342616] [2025-02-05 10:00:57,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822342616] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:00:57,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544332218] [2025-02-05 10:00:57,232 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:00:57,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:00:57,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:00:57,235 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:00:57,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 10:00:57,268 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-02-05 10:00:57,284 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:00:57,284 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:00:57,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:57,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 10:00:57,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:00:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:57,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:00:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:57,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544332218] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:00:57,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:00:57,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-05 10:00:57,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101789903] [2025-02-05 10:00:57,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:00:57,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 10:00:57,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:00:57,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 10:00:57,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 10:00:57,366 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:00:57,440 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2025-02-05 10:00:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 10:00:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 10:00:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:00:57,442 INFO L225 Difference]: With dead ends: 100 [2025-02-05 10:00:57,442 INFO L226 Difference]: Without dead ends: 84 [2025-02-05 10:00:57,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-05 10:00:57,443 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 121 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:00:57,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 51 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:00:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-05 10:00:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 44. [2025-02-05 10:00:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2025-02-05 10:00:57,449 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 10 [2025-02-05 10:00:57,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:00:57,449 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2025-02-05 10:00:57,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2025-02-05 10:00:57,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 10:00:57,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:00:57,449 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2025-02-05 10:00:57,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-05 10:00:57,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:00:57,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:00:57,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:00:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -964668002, now seen corresponding path program 3 times [2025-02-05 10:00:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:00:57,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832514227] [2025-02-05 10:00:57,651 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:00:57,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:00:57,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 6 equivalence classes. [2025-02-05 10:00:57,692 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:00:57,694 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 10:00:57,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:57,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:00:57,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832514227] [2025-02-05 10:00:57,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832514227] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:00:57,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853936656] [2025-02-05 10:00:57,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:00:57,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:00:57,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:00:57,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:00:57,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 10:00:57,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 16 statements into 6 equivalence classes. [2025-02-05 10:00:57,957 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:00:57,957 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 10:00:57,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:57,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 10:00:57,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:00:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:57,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:00:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:58,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853936656] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:00:58,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:00:58,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 10:00:58,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915502179] [2025-02-05 10:00:58,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:00:58,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 10:00:58,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:00:58,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 10:00:58,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:00:58,190 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:58,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:00:58,398 INFO L93 Difference]: Finished difference Result 211 states and 247 transitions. [2025-02-05 10:00:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 10:00:58,399 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-05 10:00:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:00:58,400 INFO L225 Difference]: With dead ends: 211 [2025-02-05 10:00:58,401 INFO L226 Difference]: Without dead ends: 180 [2025-02-05 10:00:58,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 10:00:58,402 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 459 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:00:58,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 93 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:00:58,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-02-05 10:00:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 86. [2025-02-05 10:00:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 85 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:58,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2025-02-05 10:00:58,417 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 16 [2025-02-05 10:00:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:00:58,417 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2025-02-05 10:00:58,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:00:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2025-02-05 10:00:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 10:00:58,418 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:00:58,418 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2025-02-05 10:00:58,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 10:00:58,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:00:58,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:00:58,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:00:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 895995934, now seen corresponding path program 4 times [2025-02-05 10:00:58,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:00:58,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064796562] [2025-02-05 10:00:58,620 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:00:58,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:00:58,634 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-05 10:00:58,648 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:00:58,648 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:00:58,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:59,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:00:59,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064796562] [2025-02-05 10:00:59,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064796562] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:00:59,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832244229] [2025-02-05 10:00:59,094 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:00:59,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:00:59,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:00:59,096 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:00:59,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 10:00:59,136 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-05 10:00:59,157 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 10:00:59,158 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 10:00:59,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:00:59,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-05 10:00:59,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:00:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:59,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:00:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:00:59,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832244229] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:00:59,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:00:59,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-02-05 10:00:59,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610203903] [2025-02-05 10:00:59,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:00:59,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-02-05 10:00:59,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:00:59,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-02-05 10:00:59,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 10:00:59,876 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:01:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:01:00,403 INFO L93 Difference]: Finished difference Result 433 states and 505 transitions. [2025-02-05 10:01:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-05 10:01:00,404 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-05 10:01:00,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:01:00,407 INFO L225 Difference]: With dead ends: 433 [2025-02-05 10:01:00,408 INFO L226 Difference]: Without dead ends: 372 [2025-02-05 10:01:00,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 10:01:00,410 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 1001 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:01:00,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 192 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:01:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2025-02-05 10:01:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 170. [2025-02-05 10:01:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.1538461538461537) internal successors, (195), 169 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:01:00,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 195 transitions. [2025-02-05 10:01:00,433 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 195 transitions. Word has length 28 [2025-02-05 10:01:00,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:01:00,434 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 195 transitions. [2025-02-05 10:01:00,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:01:00,434 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 195 transitions. [2025-02-05 10:01:00,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-05 10:01:00,435 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:01:00,435 INFO L218 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1] [2025-02-05 10:01:00,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 10:01:00,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:01:00,636 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:01:00,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:01:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 992707870, now seen corresponding path program 5 times [2025-02-05 10:01:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:01:00,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461022749] [2025-02-05 10:01:00,636 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:01:00,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:01:00,654 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 24 equivalence classes. [2025-02-05 10:01:00,701 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 10:01:00,701 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-05 10:01:00,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:01:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:01:01,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:01:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461022749] [2025-02-05 10:01:01,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461022749] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:01:01,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060426444] [2025-02-05 10:01:01,925 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:01:01,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:01:01,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:01:01,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:01:01,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 10:01:01,983 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 24 equivalence classes. [2025-02-05 10:01:23,638 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 52 of 52 statements. [2025-02-05 10:01:23,638 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-02-05 10:01:23,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:01:23,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 10:01:23,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:01:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:01:23,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:01:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:01:25,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060426444] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:01:25,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:01:25,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-02-05 10:01:25,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936604734] [2025-02-05 10:01:25,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:01:25,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-05 10:01:25,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:01:25,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-05 10:01:25,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 10:01:25,588 INFO L87 Difference]: Start difference. First operand 170 states and 195 transitions. Second operand has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:01:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:01:27,719 INFO L93 Difference]: Finished difference Result 877 states and 1021 transitions. [2025-02-05 10:01:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-05 10:01:27,720 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-02-05 10:01:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:01:27,722 INFO L225 Difference]: With dead ends: 877 [2025-02-05 10:01:27,722 INFO L226 Difference]: Without dead ends: 756 [2025-02-05 10:01:27,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 10:01:27,727 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 2288 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:01:27,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 384 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:01:27,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2025-02-05 10:01:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 338. [2025-02-05 10:01:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.1483679525222552) internal successors, (387), 337 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:01:27,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 387 transitions. [2025-02-05 10:01:27,749 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 387 transitions. Word has length 52 [2025-02-05 10:01:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:01:27,750 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 387 transitions. [2025-02-05 10:01:27,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0416666666666667) internal successors, (100), 96 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:01:27,750 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 387 transitions. [2025-02-05 10:01:27,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-05 10:01:27,753 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:01:27,754 INFO L218 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1, 1] [2025-02-05 10:01:27,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 10:01:27,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:01:27,954 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:01:27,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:01:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1408897250, now seen corresponding path program 6 times [2025-02-05 10:01:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:01:27,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323028033] [2025-02-05 10:01:27,955 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:01:27,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:01:27,980 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 100 statements into 48 equivalence classes. [2025-02-05 10:01:28,100 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) and asserted 100 of 100 statements. [2025-02-05 10:01:28,101 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2025-02-05 10:01:28,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:01:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:01:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:01:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323028033] [2025-02-05 10:01:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323028033] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:01:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102812966] [2025-02-05 10:01:31,697 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:01:31,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:01:31,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:01:31,698 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:01:31,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 10:01:31,781 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 100 statements into 48 equivalence classes.