./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.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/ps4-ll_valuebound5.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 b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 15:28:21,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 15:28:21,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 15:28:21,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 15:28:21,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 15:28:21,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 15:28:21,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 15:28:21,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 15:28:21,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 15:28:21,594 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 15:28:21,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 15:28:21,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 15:28:21,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 15:28:21,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 15:28:21,594 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 15:28:21,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 15:28:21,594 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 15:28:21,594 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 15:28:21,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 15:28:21,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 15:28:21,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 15:28:21,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 15:28:21,598 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 15:28:21,598 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 15:28:21,599 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:28:21,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 15:28:21,599 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 15:28:21,599 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 -> b2a54f54b02d2bb65a6f46eeae11edba1907f4f082d2aaa313102e422e7e6122 [2025-02-05 15:28:21,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 15:28:21,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 15:28:21,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 15:28:21,826 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 15:28:21,827 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 15:28:21,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2025-02-05 15:28:23,049 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0929b00fc/5df3019471e74141a92c8fd9b842d70d/FLAG2881e2874 [2025-02-05 15:28:23,241 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 15:28:23,241 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound5.c [2025-02-05 15:28:23,251 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0929b00fc/5df3019471e74141a92c8fd9b842d70d/FLAG2881e2874 [2025-02-05 15:28:23,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0929b00fc/5df3019471e74141a92c8fd9b842d70d [2025-02-05 15:28:23,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 15:28:23,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 15:28:23,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 15:28:23,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 15:28:23,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 15:28:23,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e7ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23, skipping insertion in model container [2025-02-05 15:28:23,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,316 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 15:28:23,414 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/ps4-ll_valuebound5.c[458,471] [2025-02-05 15:28:23,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:28:23,435 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 15:28:23,442 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/ps4-ll_valuebound5.c[458,471] [2025-02-05 15:28:23,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 15:28:23,457 INFO L204 MainTranslator]: Completed translation [2025-02-05 15:28:23,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23 WrapperNode [2025-02-05 15:28:23,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 15:28:23,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 15:28:23,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 15:28:23,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 15:28:23,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,478 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2025-02-05 15:28:23,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 15:28:23,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 15:28:23,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 15:28:23,478 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 15:28:23,484 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,496 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 15:28:23,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,498 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,499 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,499 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 15:28:23,501 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 15:28:23,501 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 15:28:23,501 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 15:28:23,502 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (1/1) ... [2025-02-05 15:28:23,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 15:28:23,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:28:23,533 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 15:28:23,535 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 15:28:23,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 15:28:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 15:28:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 15:28:23,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 15:28:23,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-05 15:28:23,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-05 15:28:23,618 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 15:28:23,619 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 15:28:23,706 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-02-05 15:28:23,706 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 15:28:23,711 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 15:28:23,712 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 15:28:23,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:28:23 BoogieIcfgContainer [2025-02-05 15:28:23,712 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 15:28:23,714 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 15:28:23,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 15:28:23,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 15:28:23,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 03:28:23" (1/3) ... [2025-02-05 15:28:23,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659694bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:28:23, skipping insertion in model container [2025-02-05 15:28:23,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 03:28:23" (2/3) ... [2025-02-05 15:28:23,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659694bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 03:28:23, skipping insertion in model container [2025-02-05 15:28:23,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:28:23" (3/3) ... [2025-02-05 15:28:23,718 INFO L128 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound5.c [2025-02-05 15:28:23,729 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 15:28:23,731 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ps4-ll_valuebound5.c that has 2 procedures, 19 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-05 15:28:23,769 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 15:28:23,781 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;@68841eae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 15:28:23,781 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 15:28:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 15:28:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 15:28:23,788 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:28:23,789 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:28:23,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:28:23,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:28:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash 327624324, now seen corresponding path program 1 times [2025-02-05 15:28:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:28:23,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551979703] [2025-02-05 15:28:23,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:28:23,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:28:23,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 15:28:23,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 15:28:23,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:28:23,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:28:23,886 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 15:28:23,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:28:23,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551979703] [2025-02-05 15:28:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551979703] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:28:23,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:28:23,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-05 15:28:23,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977589136] [2025-02-05 15:28:23,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:28:23,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-05 15:28:23,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:28:23,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-05 15:28:23,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-05 15:28:23,909 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 15:28:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:28:23,920 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2025-02-05 15:28:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-05 15:28:23,921 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 15:28:23,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:28:23,925 INFO L225 Difference]: With dead ends: 35 [2025-02-05 15:28:23,926 INFO L226 Difference]: Without dead ends: 15 [2025-02-05 15:28:23,928 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 15:28:23,929 INFO L435 NwaCegarLoop]: 21 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, 21 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 15:28:23,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:28:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-05 15:28:23,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-02-05 15:28:23,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 15:28:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2025-02-05 15:28:23,953 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2025-02-05 15:28:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:28:23,953 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2025-02-05 15:28:23,953 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 15:28:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2025-02-05 15:28:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 15:28:23,954 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:28:23,954 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:28:23,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 15:28:23,955 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:28:23,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:28:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1215128005, now seen corresponding path program 1 times [2025-02-05 15:28:23,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:28:23,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010089683] [2025-02-05 15:28:23,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:28:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:28:23,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 15:28:23,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 15:28:23,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:28:23,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:28:23,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047026712] [2025-02-05 15:28:23,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:28:23,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:23,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:28:23,988 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 15:28:23,991 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 15:28:24,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 15:28:24,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 15:28:24,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:28:24,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:28:24,026 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 15:28:24,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:28:24,085 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 15:28:24,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 15:28:24,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:28:24,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010089683] [2025-02-05 15:28:24,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:28:24,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047026712] [2025-02-05 15:28:24,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047026712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 15:28:24,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 15:28:24,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 15:28:24,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2882824] [2025-02-05 15:28:24,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:28:24,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:28:24,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:28:24,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:28:24,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 15:28:24,088 INFO L87 Difference]: Start difference. First operand 15 states and 17 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 15:28:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:28:24,125 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2025-02-05 15:28:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:28:24,126 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 15:28:24,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:28:24,126 INFO L225 Difference]: With dead ends: 26 [2025-02-05 15:28:24,127 INFO L226 Difference]: Without dead ends: 22 [2025-02-05 15:28:24,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 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 15:28:24,127 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:28:24,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:28:24,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-02-05 15:28:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-02-05 15:28:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-05 15:28:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2025-02-05 15:28:24,132 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2025-02-05 15:28:24,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:28:24,132 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2025-02-05 15:28:24,132 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 15:28:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2025-02-05 15:28:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 15:28:24,133 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:28:24,133 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:28:24,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 15:28:24,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:24,337 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:28:24,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:28:24,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1431936752, now seen corresponding path program 1 times [2025-02-05 15:28:24,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:28:24,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035861330] [2025-02-05 15:28:24,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:28:24,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:28:24,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-05 15:28:24,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 15:28:24,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:28:24,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:28:24,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219195834] [2025-02-05 15:28:24,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:28:24,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:24,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:28:24,390 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 15:28:24,391 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 15:28:24,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-05 15:28:24,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 15:28:24,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:28:24,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:28:24,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 15:28:24,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:28:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 15:28:24,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:28:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 15:28:24,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:28:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035861330] [2025-02-05 15:28:24,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:28:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219195834] [2025-02-05 15:28:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219195834] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 15:28:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 15:28:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2025-02-05 15:28:24,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426027479] [2025-02-05 15:28:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 15:28:24,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 15:28:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:28:24,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 15:28:24,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-05 15:28:24,529 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 15:28:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:28:24,556 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2025-02-05 15:28:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 15:28:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 16 [2025-02-05 15:28:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:28:24,557 INFO L225 Difference]: With dead ends: 28 [2025-02-05 15:28:24,557 INFO L226 Difference]: Without dead ends: 23 [2025-02-05 15:28:24,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-05 15:28:24,558 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 15:28:24,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 44 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 15:28:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-05 15:28:24,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-05 15:28:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-05 15:28:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2025-02-05 15:28:24,563 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2025-02-05 15:28:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:28:24,563 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2025-02-05 15:28:24,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 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 15:28:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2025-02-05 15:28:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 15:28:24,564 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:28:24,564 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:28:24,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 15:28:24,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:24,770 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:28:24,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:28:24,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1280967319, now seen corresponding path program 1 times [2025-02-05 15:28:24,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:28:24,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812374114] [2025-02-05 15:28:24,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:28:24,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:28:24,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 15:28:24,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 15:28:24,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:28:24,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:28:24,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137837176] [2025-02-05 15:28:24,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 15:28:24,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:28:24,798 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 15:28:24,800 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 15:28:24,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-05 15:28:24,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 15:28:24,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 15:28:24,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:28:24,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 15:28:24,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:28:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:28:24,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:28:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 15:28:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:28:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812374114] [2025-02-05 15:28:25,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:28:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137837176] [2025-02-05 15:28:25,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137837176] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:28:25,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:28:25,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2025-02-05 15:28:25,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350771833] [2025-02-05 15:28:25,009 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:28:25,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-05 15:28:25,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:28:25,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-05 15:28:25,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-02-05 15:28:25,010 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 15:28:25,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:28:25,124 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-02-05 15:28:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-05 15:28:25,124 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2025-02-05 15:28:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:28:25,125 INFO L225 Difference]: With dead ends: 38 [2025-02-05 15:28:25,125 INFO L226 Difference]: Without dead ends: 32 [2025-02-05 15:28:25,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-05 15:28:25,126 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:28:25,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 109 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:28:25,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-05 15:28:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-02-05 15:28:25,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-05 15:28:25,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2025-02-05 15:28:25,135 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2025-02-05 15:28:25,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:28:25,135 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2025-02-05 15:28:25,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-05 15:28:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2025-02-05 15:28:25,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-05 15:28:25,136 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 15:28:25,136 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 15:28:25,145 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 15:28:25,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:25,338 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 15:28:25,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 15:28:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -657941268, now seen corresponding path program 2 times [2025-02-05 15:28:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 15:28:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499266152] [2025-02-05 15:28:25,339 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:28:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 15:28:25,348 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 15:28:25,376 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 15:28:25,376 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:28:25,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-05 15:28:25,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639538622] [2025-02-05 15:28:25,380 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 15:28:25,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:25,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 15:28:25,387 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 15:28:25,389 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 15:28:25,419 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 15:28:25,445 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 15:28:25,446 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 15:28:25,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 15:28:25,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-05 15:28:25,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 15:28:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:28:25,628 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 15:28:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-05 15:28:25,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 15:28:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499266152] [2025-02-05 15:28:25,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-05 15:28:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639538622] [2025-02-05 15:28:25,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639538622] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 15:28:25,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 15:28:25,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2025-02-05 15:28:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786990773] [2025-02-05 15:28:25,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 15:28:25,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-05 15:28:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 15:28:25,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-05 15:28:25,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-02-05 15:28:25,927 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 15:28:26,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 15:28:26,176 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2025-02-05 15:28:26,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 15:28:26,176 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 43 [2025-02-05 15:28:26,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 15:28:26,177 INFO L225 Difference]: With dead ends: 36 [2025-02-05 15:28:26,177 INFO L226 Difference]: Without dead ends: 0 [2025-02-05 15:28:26,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2025-02-05 15:28:26,179 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 15:28:26,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 192 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 15:28:26,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-05 15:28:26,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-05 15:28:26,181 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 15:28:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-05 15:28:26,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2025-02-05 15:28:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 15:28:26,181 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-05 15:28:26,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.9) internal successors, (38), 19 states have internal predecessors, (38), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 15:28:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-05 15:28:26,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-05 15:28:26,184 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-05 15:28:26,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-05 15:28:26,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 15:28:26,389 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-02-05 15:28:26,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-02-05 15:28:26,530 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-05 15:28:26,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 03:28:26 BoogieIcfgContainer [2025-02-05 15:28:26,547 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-05 15:28:26,547 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-05 15:28:26,547 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-05 15:28:26,548 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-05 15:28:26,548 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 03:28:23" (3/4) ... [2025-02-05 15:28:26,550 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-05 15:28:26,554 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-02-05 15:28:26,556 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-02-05 15:28:26,557 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-05 15:28:26,557 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-02-05 15:28:26,557 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-05 15:28:26,622 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-05 15:28:26,622 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-05 15:28:26,622 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-05 15:28:26,623 INFO L158 Benchmark]: Toolchain (without parser) took 3333.07ms. Allocated memory is still 167.8MB. Free memory was 134.3MB in the beginning and 89.1MB in the end (delta: 45.1MB). Peak memory consumption was 39.2MB. Max. memory is 16.1GB. [2025-02-05 15:28:26,623 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 226.5MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:28:26,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.27ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 122.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-05 15:28:26,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.17ms. Allocated memory is still 167.8MB. Free memory was 122.8MB in the beginning and 121.9MB in the end (delta: 918.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:28:26,626 INFO L158 Benchmark]: Boogie Preprocessor took 22.14ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 120.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:28:26,626 INFO L158 Benchmark]: IcfgBuilder took 211.48ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 110.1MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-05 15:28:26,626 INFO L158 Benchmark]: TraceAbstraction took 2833.12ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 95.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2025-02-05 15:28:26,627 INFO L158 Benchmark]: Witness Printer took 75.14ms. Allocated memory is still 167.8MB. Free memory was 95.1MB in the beginning and 89.1MB in the end (delta: 6.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-05 15:28:26,628 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 226.5MB. Free memory is still 141.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.27ms. Allocated memory is still 167.8MB. Free memory was 133.8MB in the beginning and 122.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.17ms. Allocated memory is still 167.8MB. Free memory was 122.8MB in the beginning and 121.9MB in the end (delta: 918.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.14ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 120.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 211.48ms. Allocated memory is still 167.8MB. Free memory was 120.9MB in the beginning and 110.1MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2833.12ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 95.1MB in the end (delta: 14.1MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Witness Printer took 75.14ms. Allocated memory is still 167.8MB. Free memory was 95.1MB in the beginning and 89.1MB in the end (delta: 6.0MB). There was no memory consumed. 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: 12]: 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 333 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 275 IncrementalHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 78 mSDtfsCounter, 275 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 817 SizeOfPredicates, 7 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 96/190 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: 27]: Location Invariant Derived location invariant: (((((y + ((__int128) y * y)) == (c + ((__int128) c * y))) && ((((__int128) 2 * c) + ((__int128) c * y)) == (((__int128) 2 * y) + ((__int128) y * y)))) && ((((__int128) k * y) == ((__int128) y * y)) || (c < k))) && (((((((__int128) y * y) * y) * 2) + ((((__int128) y * y) * y) * y)) + ((__int128) y * y)) == ((__int128) x * 4))) RESULT: Ultimate proved your program to be correct! [2025-02-05 15:28:26,644 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