./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c --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/nla-digbench-scaling/cohencu-ll_valuebound50.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 0bcbcb4a55258889434b8bf703da9ec6fb29d07a2fbacad968a5ab15e005b314 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:02:30,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:02:30,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:02:30,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:02:30,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:02:30,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:02:30,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:02:30,848 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:02:30,848 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:02:30,848 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:02:30,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:02:30,848 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:02:30,848 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:02:30,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:02:30,848 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:02:30,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:02:30,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:02:30,849 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:02:30,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:02:30,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:02:30,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:02:30,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:02:30,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:02:30,851 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:02:30,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:02:30,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:02:30,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:02:30,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:02:30,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:02:30,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:02:30,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:02:30,852 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 -> 0bcbcb4a55258889434b8bf703da9ec6fb29d07a2fbacad968a5ab15e005b314 [2025-02-05 15:02:31,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:02:31,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:02:31,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:02:31,179 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:02:31,179 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:02:31,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2025-02-05 15:02:32,414 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3e4d5f6b5/b6a75ad9ae644d7da09fa96437b281d4/FLAG4a5e3d5ba [2025-02-05 15:02:32,658 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:02:32,659 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2025-02-05 15:02:32,664 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3e4d5f6b5/b6a75ad9ae644d7da09fa96437b281d4/FLAG4a5e3d5ba [2025-02-05 15:02:32,996 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3e4d5f6b5/b6a75ad9ae644d7da09fa96437b281d4 [2025-02-05 15:02:32,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:02:32,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:02:32,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:02:32,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:02:33,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:02:33,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:02:32" (1/1) ... [2025-02-05 15:02:33,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6d6817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33, skipping insertion in model container [2025-02-05 15:02:33,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:02:32" (1/1) ... [2025-02-05 15:02:33,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:02:33,109 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/cohencu-ll_valuebound50.c[588,601] [2025-02-05 15:02:33,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:02:33,136 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:02:33,145 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/cohencu-ll_valuebound50.c[588,601] [2025-02-05 15:02:33,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:02:33,164 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:02:33,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33 WrapperNode [2025-02-05 15:02:33,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:02:33,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:02:33,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:02:33,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:02:33,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,192 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2025-02-05 15:02:33,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:02:33,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:02:33,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:02:33,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:02:33,198 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,200 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,209 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]. [2025-02-05 15:02:33,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,212 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,214 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:02:33,215 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:02:33,215 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:02:33,218 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:02:33,219 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (1/1) ... [2025-02-05 15:02:33,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:02:33,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:33,242 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 15:02:33,246 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 15:02:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:02:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:02:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:02:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:02:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 15:02:33,263 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 15:02:33,302 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:02:33,304 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:02:33,414 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-05 15:02:33,414 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:02:33,424 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:02:33,425 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:02:33,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:02:33 BoogieIcfgContainer [2025-02-05 15:02:33,425 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:02:33,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:02:33,427 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:02:33,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:02:33,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:02:32" (1/3) ... [2025-02-05 15:02:33,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765aa161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:02:33, skipping insertion in model container [2025-02-05 15:02:33,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:02:33" (2/3) ... [2025-02-05 15:02:33,431 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765aa161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:02:33, skipping insertion in model container [2025-02-05 15:02:33,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:02:33" (3/3) ... [2025-02-05 15:02:33,432 INFO L128 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound50.c [2025-02-05 15:02:33,441 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:02:33,443 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohencu-ll_valuebound50.c that has 2 procedures, 27 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:02:33,473 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:02:33,481 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;@306817e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:02:33,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:02:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-02-05 15:02:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 15:02:33,487 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:33,487 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:33,488 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:33,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:33,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1442289540, now seen corresponding path program 1 times [2025-02-05 15:02:33,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:33,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301338205] [2025-02-05 15:02:33,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:33,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 15:02:33,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 15:02:33,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:33,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:33,575 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 15:02:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301338205] [2025-02-05 15:02:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301338205] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:02:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:02:33,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 15:02:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022483796] [2025-02-05 15:02:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:02:33,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 15:02:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:33,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 15:02:33,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 15:02:33,592 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 15:02:33,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:33,603 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2025-02-05 15:02:33,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 15:02:33,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-05 15:02:33,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:33,608 INFO L225 Difference]: With dead ends: 51 [2025-02-05 15:02:33,608 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 15:02:33,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 15:02:33,612 INFO L435 NwaCegarLoop]: 37 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, 37 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 [2025-02-05 15:02:33,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:02:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 15:02:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-05 15:02:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 15:02:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2025-02-05 15:02:33,633 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2025-02-05 15:02:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:33,634 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2025-02-05 15:02:33,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 15:02:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2025-02-05 15:02:33,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 15:02:33,634 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:33,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:33,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:02:33,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:33,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:33,635 INFO L85 PathProgramCache]: Analyzing trace with hash -554785859, now seen corresponding path program 1 times [2025-02-05 15:02:33,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:33,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608847588] [2025-02-05 15:02:33,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:33,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:33,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 15:02:33,648 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 15:02:33,648 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:33,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:33,826 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 15:02:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608847588] [2025-02-05 15:02:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608847588] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:02:33,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:02:33,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:02:33,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719100564] [2025-02-05 15:02:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:02:33,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:02:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:33,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:02:33,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:02:33,828 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 15:02:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:33,927 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2025-02-05 15:02:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:02:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-05 15:02:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:33,928 INFO L225 Difference]: With dead ends: 29 [2025-02-05 15:02:33,928 INFO L226 Difference]: Without dead ends: 27 [2025-02-05 15:02:33,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:02:33,929 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:33,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:02:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-05 15:02:33,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-05 15:02:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 15:02:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2025-02-05 15:02:33,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2025-02-05 15:02:33,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:33,937 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2025-02-05 15:02:33,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 15:02:33,937 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2025-02-05 15:02:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 15:02:33,938 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:33,938 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:33,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 15:02:33,938 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:33,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash -318843776, now seen corresponding path program 1 times [2025-02-05 15:02:33,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:33,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165649854] [2025-02-05 15:02:33,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:33,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:33,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 15:02:33,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 15:02:33,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:33,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:33,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388332870] [2025-02-05 15:02:33,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:33,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:33,964 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 15:02:33,965 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 15:02:33,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-05 15:02:34,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 15:02:34,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:34,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:34,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:02:34,013 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:02:34,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:02:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165649854] [2025-02-05 15:02:34,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388332870] [2025-02-05 15:02:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388332870] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:02:34,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:02:34,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:02:34,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179699479] [2025-02-05 15:02:34,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:02:34,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:02:34,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:34,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:02:34,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:02:34,068 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 15:02:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:34,146 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2025-02-05 15:02:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:02:34,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2025-02-05 15:02:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:34,147 INFO L225 Difference]: With dead ends: 46 [2025-02-05 15:02:34,147 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 15:02:34,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:02:34,148 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:34,148 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 107 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:02:34,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 15:02:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2025-02-05 15:02:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-05 15:02:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2025-02-05 15:02:34,164 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2025-02-05 15:02:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:34,164 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2025-02-05 15:02:34,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-05 15:02:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2025-02-05 15:02:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-05 15:02:34,165 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:34,165 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:34,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 15:02:34,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:34,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:34,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1580240349, now seen corresponding path program 1 times [2025-02-05 15:02:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007280793] [2025-02-05 15:02:34,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:34,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:34,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 15:02:34,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 15:02:34,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:34,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:34,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393025533] [2025-02-05 15:02:34,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:34,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:34,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:34,385 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 15:02:34,385 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 15:02:34,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-05 15:02:34,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 15:02:34,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:34,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:34,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:02:34,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:34,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:02:34,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:02:34,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007280793] [2025-02-05 15:02:34,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393025533] [2025-02-05 15:02:34,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393025533] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:02:34,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:02:34,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:02:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458485580] [2025-02-05 15:02:34,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:02:34,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:02:34,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:34,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:02:34,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:02:34,465 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 15:02:34,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:34,510 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2025-02-05 15:02:34,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:02:34,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-02-05 15:02:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:34,511 INFO L225 Difference]: With dead ends: 50 [2025-02-05 15:02:34,511 INFO L226 Difference]: Without dead ends: 48 [2025-02-05 15:02:34,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:02:34,511 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:34,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:02:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-05 15:02:34,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2025-02-05 15:02:34,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2025-02-05 15:02:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2025-02-05 15:02:34,519 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2025-02-05 15:02:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:34,519 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2025-02-05 15:02:34,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-05 15:02:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2025-02-05 15:02:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-05 15:02:34,520 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:34,520 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:34,526 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 15:02:34,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:34,724 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:34,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1388318432, now seen corresponding path program 1 times [2025-02-05 15:02:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:34,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158625776] [2025-02-05 15:02:34,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:34,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:34,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 15:02:34,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 15:02:34,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:34,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:34,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999665891] [2025-02-05 15:02:34,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:34,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:34,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:34,741 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 15:02:34,747 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 15:02:34,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-05 15:02:34,777 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-05 15:02:34,777 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:34,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:34,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-05 15:02:34,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-05 15:02:34,850 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:02:34,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:34,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158625776] [2025-02-05 15:02:34,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:34,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999665891] [2025-02-05 15:02:34,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999665891] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:02:34,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:02:34,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:02:34,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045671631] [2025-02-05 15:02:34,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:02:34,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:02:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:34,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:02:34,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:02:34,852 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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) [2025-02-05 15:02:34,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:34,922 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2025-02-05 15:02:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:02:34,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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 24 [2025-02-05 15:02:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:34,923 INFO L225 Difference]: With dead ends: 58 [2025-02-05 15:02:34,923 INFO L226 Difference]: Without dead ends: 46 [2025-02-05 15:02:34,924 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 15:02:34,924 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:34,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 96 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:02:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-05 15:02:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-02-05 15:02:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-05 15:02:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2025-02-05 15:02:34,931 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2025-02-05 15:02:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:34,931 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2025-02-05 15:02:34,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 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) [2025-02-05 15:02:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2025-02-05 15:02:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-05 15:02:34,935 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:34,935 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:34,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 15:02:35,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:35,136 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:35,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:35,136 INFO L85 PathProgramCache]: Analyzing trace with hash -175201439, now seen corresponding path program 1 times [2025-02-05 15:02:35,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:35,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240682422] [2025-02-05 15:02:35,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:35,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:35,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-05 15:02:35,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 15:02:35,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:35,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:35,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280468273] [2025-02-05 15:02:35,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:35,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:35,153 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 15:02:35,154 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 15:02:35,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-05 15:02:35,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-05 15:02:35,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:35,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:35,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 15:02:35,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-05 15:02:35,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-05 15:02:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240682422] [2025-02-05 15:02:35,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280468273] [2025-02-05 15:02:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280468273] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:02:35,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:02:35,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2025-02-05 15:02:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787188470] [2025-02-05 15:02:35,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:35,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 15:02:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:35,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 15:02:35,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:02:35,410 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2025-02-05 15:02:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:35,629 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2025-02-05 15:02:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 15:02:35,630 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 41 [2025-02-05 15:02:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:35,631 INFO L225 Difference]: With dead ends: 69 [2025-02-05 15:02:35,631 INFO L226 Difference]: Without dead ends: 67 [2025-02-05 15:02:35,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2025-02-05 15:02:35,632 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:35,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:02:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-05 15:02:35,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2025-02-05 15:02:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-02-05 15:02:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-02-05 15:02:35,651 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2025-02-05 15:02:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:35,652 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-02-05 15:02:35,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2025-02-05 15:02:35,652 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-02-05 15:02:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-05 15:02:35,652 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:35,652 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:35,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 15:02:35,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-05 15:02:35,854 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:35,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1564730268, now seen corresponding path program 2 times [2025-02-05 15:02:35,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:35,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097638390] [2025-02-05 15:02:35,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:02:35,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:35,863 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-05 15:02:35,886 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 15:02:35,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:02:35,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337536501] [2025-02-05 15:02:35,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:02:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:35,892 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 15:02:35,897 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 15:02:35,923 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-05 15:02:35,936 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 15:02:35,936 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:02:35,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:35,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-05 15:02:35,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-05 15:02:36,063 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-05 15:02:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:36,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097638390] [2025-02-05 15:02:36,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:36,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337536501] [2025-02-05 15:02:36,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337536501] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:02:36,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:02:36,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2025-02-05 15:02:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43283531] [2025-02-05 15:02:36,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:36,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-05 15:02:36,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:36,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-05 15:02:36,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:02:36,209 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-05 15:02:40,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-02-05 15:02:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:40,435 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2025-02-05 15:02:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 15:02:40,437 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 46 [2025-02-05 15:02:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:40,440 INFO L225 Difference]: With dead ends: 84 [2025-02-05 15:02:40,440 INFO L226 Difference]: Without dead ends: 82 [2025-02-05 15:02:40,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2025-02-05 15:02:40,449 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:40,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 152 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-02-05 15:02:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-05 15:02:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2025-02-05 15:02:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 45 states have internal predecessors, (45), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2025-02-05 15:02:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2025-02-05 15:02:40,498 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 46 [2025-02-05 15:02:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:40,498 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2025-02-05 15:02:40,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-02-05 15:02:40,498 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2025-02-05 15:02:40,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-05 15:02:40,499 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:40,499 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:40,505 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 15:02:40,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:40,703 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:40,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash 426211457, now seen corresponding path program 3 times [2025-02-05 15:02:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:40,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557778989] [2025-02-05 15:02:40,703 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:02:40,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:40,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 51 statements into 6 equivalence classes. [2025-02-05 15:02:40,755 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 51 of 51 statements. [2025-02-05 15:02:40,759 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-05 15:02:40,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:40,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [658422186] [2025-02-05 15:02:40,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:02:40,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:40,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:40,765 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 15:02:40,767 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 15:02:40,789 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 51 statements into 6 equivalence classes. [2025-02-05 15:02:40,797 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 51 statements. [2025-02-05 15:02:40,797 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 15:02:40,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:40,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 15:02:40,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-05 15:02:40,974 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-05 15:02:41,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557778989] [2025-02-05 15:02:41,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658422186] [2025-02-05 15:02:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658422186] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:02:41,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:02:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2025-02-05 15:02:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652911750] [2025-02-05 15:02:41,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:41,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 15:02:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:41,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 15:02:41,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:02:41,065 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-05 15:02:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:41,255 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2025-02-05 15:02:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 15:02:41,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2025-02-05 15:02:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:41,256 INFO L225 Difference]: With dead ends: 96 [2025-02-05 15:02:41,256 INFO L226 Difference]: Without dead ends: 84 [2025-02-05 15:02:41,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:02:41,257 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:41,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 200 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:02:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-05 15:02:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 67. [2025-02-05 15:02:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-05 15:02:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2025-02-05 15:02:41,270 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 51 [2025-02-05 15:02:41,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:41,271 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2025-02-05 15:02:41,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-05 15:02:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2025-02-05 15:02:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-05 15:02:41,272 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:41,272 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:41,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 15:02:41,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-02-05 15:02:41,476 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:41,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:41,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1799023150, now seen corresponding path program 1 times [2025-02-05 15:02:41,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:41,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21781206] [2025-02-05 15:02:41,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:41,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:41,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-05 15:02:41,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-05 15:02:41,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:41,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078197485] [2025-02-05 15:02:41,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:41,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:41,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:41,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:02:41,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 15:02:41,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-05 15:02:41,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-05 15:02:41,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:41,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:41,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 15:02:41,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 15:02:41,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2025-02-05 15:02:41,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:41,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21781206] [2025-02-05 15:02:41,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:41,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078197485] [2025-02-05 15:02:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078197485] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:02:41,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:02:41,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-02-05 15:02:41,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680131379] [2025-02-05 15:02:41,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:41,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 15:02:41,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:41,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 15:02:41,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:02:41,824 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2025-02-05 15:02:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:41,999 INFO L93 Difference]: Finished difference Result 97 states and 113 transitions. [2025-02-05 15:02:41,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 15:02:42,000 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 67 [2025-02-05 15:02:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:42,001 INFO L225 Difference]: With dead ends: 97 [2025-02-05 15:02:42,001 INFO L226 Difference]: Without dead ends: 95 [2025-02-05 15:02:42,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:02:42,002 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:42,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 195 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:02:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-02-05 15:02:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2025-02-05 15:02:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.0769230769230769) internal successors, (56), 54 states have internal predecessors, (56), 25 states have call successors, (25), 13 states have call predecessors, (25), 13 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-05 15:02:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2025-02-05 15:02:42,031 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 67 [2025-02-05 15:02:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:42,032 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2025-02-05 15:02:42,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2025-02-05 15:02:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2025-02-05 15:02:42,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-05 15:02:42,033 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:42,033 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:42,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 15:02:42,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:42,238 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:42,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1670602287, now seen corresponding path program 1 times [2025-02-05 15:02:42,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:42,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597994588] [2025-02-05 15:02:42,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:42,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:42,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 15:02:42,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 15:02:42,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:42,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:42,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670076870] [2025-02-05 15:02:42,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:02:42,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:42,273 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:02:42,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 15:02:42,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-02-05 15:02:42,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-02-05 15:02:42,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:02:42,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:42,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-05 15:02:42,313 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-02-05 15:02:42,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-02-05 15:02:42,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:42,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597994588] [2025-02-05 15:02:42,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:42,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670076870] [2025-02-05 15:02:42,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670076870] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:02:42,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:02:42,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-02-05 15:02:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321506375] [2025-02-05 15:02:42,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:42,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 15:02:42,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:42,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 15:02:42,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:02:42,575 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2025-02-05 15:02:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:42,804 INFO L93 Difference]: Finished difference Result 127 states and 146 transitions. [2025-02-05 15:02:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 15:02:42,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 72 [2025-02-05 15:02:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:42,806 INFO L225 Difference]: With dead ends: 127 [2025-02-05 15:02:42,808 INFO L226 Difference]: Without dead ends: 106 [2025-02-05 15:02:42,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2025-02-05 15:02:42,809 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:42,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 187 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:02:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-05 15:02:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2025-02-05 15:02:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.05) internal successors, (63), 62 states have internal predecessors, (63), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-02-05 15:02:42,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2025-02-05 15:02:42,842 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 72 [2025-02-05 15:02:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:42,844 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2025-02-05 15:02:42,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2025-02-05 15:02:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2025-02-05 15:02:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-05 15:02:42,845 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:42,845 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:42,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 15:02:43,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:43,049 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:43,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash 813861582, now seen corresponding path program 2 times [2025-02-05 15:02:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:43,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393539114] [2025-02-05 15:02:43,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:02:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:43,062 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 121 statements into 2 equivalence classes. [2025-02-05 15:02:43,088 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:02:43,088 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:02:43,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:43,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750977611] [2025-02-05 15:02:43,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:02:43,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:43,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:02:43,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 15:02:43,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 121 statements into 2 equivalence classes. [2025-02-05 15:02:43,146 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-02-05 15:02:43,146 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:02:43,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:43,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-05 15:02:43,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 86 proven. 58 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2025-02-05 15:02:43,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:43,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:43,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393539114] [2025-02-05 15:02:43,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:43,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750977611] [2025-02-05 15:02:43,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750977611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 15:02:43,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:02:43,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-02-05 15:02:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370357809] [2025-02-05 15:02:43,360 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:43,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-05 15:02:43,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:43,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-05 15:02:43,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:02:43,361 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2025-02-05 15:02:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:43,583 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2025-02-05 15:02:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 15:02:43,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 121 [2025-02-05 15:02:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:43,584 INFO L225 Difference]: With dead ends: 116 [2025-02-05 15:02:43,584 INFO L226 Difference]: Without dead ends: 108 [2025-02-05 15:02:43,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-02-05 15:02:43,584 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:43,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 237 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 15:02:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-05 15:02:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-02-05 15:02:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 28 states have call successors, (28), 16 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-02-05 15:02:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 120 transitions. [2025-02-05 15:02:43,610 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 120 transitions. Word has length 121 [2025-02-05 15:02:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:43,612 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 120 transitions. [2025-02-05 15:02:43,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2025-02-05 15:02:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 120 transitions. [2025-02-05 15:02:43,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2025-02-05 15:02:43,613 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:43,613 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:43,622 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 [2025-02-05 15:02:43,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:43,814 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:43,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2108891469, now seen corresponding path program 3 times [2025-02-05 15:02:43,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:43,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400700962] [2025-02-05 15:02:43,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:02:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:43,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 148 statements into 17 equivalence classes. [2025-02-05 15:02:43,878 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) and asserted 148 of 148 statements. [2025-02-05 15:02:43,878 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2025-02-05 15:02:43,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:43,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481637079] [2025-02-05 15:02:43,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 15:02:43,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:43,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:43,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:02:43,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 15:02:43,914 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 148 statements into 17 equivalence classes. [2025-02-05 15:02:43,926 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 39 of 148 statements. [2025-02-05 15:02:43,926 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 15:02:43,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:43,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-05 15:02:43,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 139 proven. 16 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2025-02-05 15:02:43,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 139 proven. 16 refuted. 0 times theorem prover too weak. 1267 trivial. 0 not checked. [2025-02-05 15:02:44,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:44,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400700962] [2025-02-05 15:02:44,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:44,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481637079] [2025-02-05 15:02:44,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481637079] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:02:44,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:02:44,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2025-02-05 15:02:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156895959] [2025-02-05 15:02:44,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:44,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 15:02:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:44,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 15:02:44,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-02-05 15:02:44,132 INFO L87 Difference]: Start difference. First operand 108 states and 120 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2025-02-05 15:02:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:44,279 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2025-02-05 15:02:44,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 15:02:44,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 148 [2025-02-05 15:02:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:44,281 INFO L225 Difference]: With dead ends: 114 [2025-02-05 15:02:44,281 INFO L226 Difference]: Without dead ends: 110 [2025-02-05 15:02:44,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2025-02-05 15:02:44,281 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:44,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 147 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:02:44,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-02-05 15:02:44,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2025-02-05 15:02:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 65 states have internal predecessors, (66), 28 states have call successors, (28), 17 states have call predecessors, (28), 16 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2025-02-05 15:02:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2025-02-05 15:02:44,304 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 148 [2025-02-05 15:02:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:44,305 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2025-02-05 15:02:44,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2025-02-05 15:02:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2025-02-05 15:02:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-05 15:02:44,306 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:02:44,306 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:02:44,311 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 [2025-02-05 15:02:44,506 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,SelfDestructingSolverStorable11 [2025-02-05 15:02:44,507 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:02:44,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:02:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash 730579568, now seen corresponding path program 2 times [2025-02-05 15:02:44,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:02:44,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128825548] [2025-02-05 15:02:44,508 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:02:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:02:44,513 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 153 statements into 2 equivalence classes. [2025-02-05 15:02:44,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 153 of 153 statements. [2025-02-05 15:02:44,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:02:44,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:02:44,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1106456919] [2025-02-05 15:02:44,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:02:44,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:02:44,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:02:44,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 15:02:44,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 15:02:44,568 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 153 statements into 2 equivalence classes. [2025-02-05 15:02:44,598 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 153 of 153 statements. [2025-02-05 15:02:44,598 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:02:44,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:02:44,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-05 15:02:44,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:02:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 89 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2025-02-05 15:02:44,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:02:45,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2025-02-05 15:02:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:02:45,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128825548] [2025-02-05 15:02:45,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:02:45,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106456919] [2025-02-05 15:02:45,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106456919] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:02:45,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:02:45,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2025-02-05 15:02:45,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129394270] [2025-02-05 15:02:45,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:02:45,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-05 15:02:45,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:02:45,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-05 15:02:45,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2025-02-05 15:02:45,372 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 18 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) [2025-02-05 15:02:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:02:45,889 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2025-02-05 15:02:45,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 15:02:45,890 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) Word has length 153 [2025-02-05 15:02:45,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:02:45,890 INFO L225 Difference]: With dead ends: 138 [2025-02-05 15:02:45,890 INFO L226 Difference]: Without dead ends: 0 [2025-02-05 15:02:45,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 285 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2025-02-05 15:02:45,891 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 9 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 15:02:45,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 268 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 15:02:45,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-05 15:02:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-05 15:02:45,892 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) [2025-02-05 15:02:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-05 15:02:45,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 153 [2025-02-05 15:02:45,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:02:45,892 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-05 15:02:45,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 10 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 10 states have call successors, (39) [2025-02-05 15:02:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-05 15:02:45,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-05 15:02:45,894 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 15:02:45,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 15:02:46,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 15:02:46,101 INFO L422 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2025-02-05 15:02:46,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-05 15:02:55,265 WARN L286 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 109 DAG size of output: 31 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2025-02-05 15:02:55,681 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 15:02:55,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 03:02:55 BoogieIcfgContainer [2025-02-05 15:02:55,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 15:02:55,692 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 15:02:55,692 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 15:02:55,692 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 15:02:55,692 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:02:33" (3/4) ... [2025-02-05 15:02:55,697 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-05 15:02:55,701 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-05 15:02:55,703 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-02-05 15:02:55,703 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-05 15:02:55,703 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-05 15:02:55,703 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-05 15:02:55,758 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-05 15:02:55,759 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-05 15:02:55,759 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 15:02:55,759 INFO L158 Benchmark]: Toolchain (without parser) took 22761.04ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 112.5MB in the beginning and 156.1MB in the end (delta: -43.6MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2025-02-05 15:02:55,760 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:02:55,760 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.73ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 100.8MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:02:55,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.21ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 99.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:02:55,761 INFO L158 Benchmark]: Boogie Preprocessor took 20.90ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 98.5MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:02:55,761 INFO L158 Benchmark]: IcfgBuilder took 209.75ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 85.7MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:02:55,762 INFO L158 Benchmark]: TraceAbstraction took 22264.58ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 85.3MB in the beginning and 162.0MB in the end (delta: -76.6MB). Peak memory consumption was 98.9MB. Max. memory is 16.1GB. [2025-02-05 15:02:55,762 INFO L158 Benchmark]: Witness Printer took 67.26ms. Allocated memory is still 218.1MB. Free memory was 162.0MB in the beginning and 156.1MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:02:55,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 167.8MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.73ms. Allocated memory is still 142.6MB. Free memory was 112.1MB in the beginning and 100.8MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.21ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 99.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.90ms. Allocated memory is still 142.6MB. Free memory was 99.6MB in the beginning and 98.5MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 209.75ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 85.7MB in the end (delta: 12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22264.58ms. Allocated memory was 142.6MB in the beginning and 218.1MB in the end (delta: 75.5MB). Free memory was 85.3MB in the beginning and 162.0MB in the end (delta: -76.6MB). Peak memory consumption was 98.9MB. Max. memory is 16.1GB. * Witness Printer took 67.26ms. Allocated memory is still 218.1MB. Free memory was 162.0MB in the beginning and 156.1MB in the end (delta: 5.9MB). 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 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 13, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 120 SdHoareTripleChecker+Valid, 5.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 1945 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1559 mSDsCounter, 237 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1787 IncrementalHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 237 mSolverCounterUnsat, 386 mSDtfsCounter, 1787 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1361 GetRequests, 1224 SyntacticMatches, 5 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=12, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1530 NumberOfCodeBlocks, 1391 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1332 ConstructedInterpolants, 0 QuantifiedInterpolants, 4767 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1524 ConjunctsInSsa, 219 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 8214/8560 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: 33]: Location Invariant Derived location invariant: (((((((3 * ((__int128) n * n)) + 7) + ((__int128) 9 * n)) == ((__int128) y + z)) && (y == ((((__int128) 3 * n) + (3 * ((__int128) n * n))) + 1))) && (((((__int128) y * z) + 6) + ((__int128) z * z)) == ((((__int128) z * 4) + ((__int128) x * 18)) + ((__int128) y * 24)))) && ((n < (a + 1)) || (((((__int128) 2 * y) + (6 * a)) + 10) == (((__int128) a * z) + ((__int128) 2 * z))))) RESULT: Ultimate proved your program to be correct! [2025-02-05 15:02:55,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE