./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:00:21,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:00:21,155 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:00:21,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:00:21,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:00:21,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:00:21,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:00:21,173 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:00:21,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:00:21,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:00:21,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:00:21,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:00:21,174 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:00:21,174 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:00:21,174 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:00:21,175 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:00:21,175 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:00:21,175 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/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 -> 3134c54bcf8aadaf562f6870f2277db1ec6f958b1ed6dba99e7410745dba79ba [2025-03-08 05:00:21,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:00:21,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:00:21,407 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:00:21,408 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:00:21,408 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:00:21,410 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2025-03-08 05:00:22,608 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11040ac3/c9560fd79c8346998438c097934a2a94/FLAG352f71fb4 [2025-03-08 05:00:22,824 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:00:22,825 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c [2025-03-08 05:00:22,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11040ac3/c9560fd79c8346998438c097934a2a94/FLAG352f71fb4 [2025-03-08 05:00:23,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b11040ac3/c9560fd79c8346998438c097934a2a94 [2025-03-08 05:00:23,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:00:23,167 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:00:23,168 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:00:23,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:00:23,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:00:23,171 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50edfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23, skipping insertion in model container [2025-03-08 05:00:23,172 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,181 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:00:23,284 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c[489,502] [2025-03-08 05:00:23,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:00:23,306 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:00:23,312 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound50.c[489,502] [2025-03-08 05:00:23,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:00:23,330 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:00:23,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23 WrapperNode [2025-03-08 05:00:23,331 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:00:23,332 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:00:23,332 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:00:23,332 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:00:23,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,353 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-03-08 05:00:23,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:00:23,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:00:23,356 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:00:23,356 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:00:23,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,373 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]. [2025-03-08 05:00:23,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,375 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,376 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,377 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:00:23,378 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:00:23,378 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:00:23,378 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:00:23,379 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (1/1) ... [2025-03-08 05:00:23,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:00:23,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:23,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 05:00:23,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 05:00:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:00:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 05:00:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 05:00:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:00:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:00:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:00:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 05:00:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 05:00:23,462 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:00:23,464 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:00:23,573 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-08 05:00:23,574 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:00:23,580 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:00:23,582 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:00:23,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:00:23 BoogieIcfgContainer [2025-03-08 05:00:23,582 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:00:23,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:00:23,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:00:23,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:00:23,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:00:23" (1/3) ... [2025-03-08 05:00:23,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaef4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:00:23, skipping insertion in model container [2025-03-08 05:00:23,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:00:23" (2/3) ... [2025-03-08 05:00:23,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaef4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:00:23, skipping insertion in model container [2025-03-08 05:00:23,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:00:23" (3/3) ... [2025-03-08 05:00:23,591 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound50.c [2025-03-08 05:00:23,601 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:00:23,602 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll_valuebound50.c that has 3 procedures, 31 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 05:00:23,632 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:00:23,640 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;@3c2d40ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:00:23,640 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:00:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 05:00:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 05:00:23,646 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:23,647 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:23,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:23,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash 296957627, now seen corresponding path program 1 times [2025-03-08 05:00:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:23,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886662073] [2025-03-08 05:00:23,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:23,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 05:00:23,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 05:00:23,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:23,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:00:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:23,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886662073] [2025-03-08 05:00:23,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886662073] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:00:23,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299160312] [2025-03-08 05:00:23,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:23,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:23,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:23,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:00:23,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 05:00:23,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 05:00:23,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:23,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:23,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 05:00:23,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-08 05:00:23,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:00:23,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299160312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:00:23,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:00:23,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 05:00:23,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320626279] [2025-03-08 05:00:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:23,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 05:00:23,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:23,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 05:00:23,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:00:23,890 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 05:00:23,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:23,901 INFO L93 Difference]: Finished difference Result 59 states and 95 transitions. [2025-03-08 05:00:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 05:00:23,902 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-03-08 05:00:23,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:23,906 INFO L225 Difference]: With dead ends: 59 [2025-03-08 05:00:23,907 INFO L226 Difference]: Without dead ends: 27 [2025-03-08 05:00:23,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 05:00:23,912 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:23,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:00:23,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-08 05:00:23,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-03-08 05:00:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2025-03-08 05:00:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2025-03-08 05:00:23,943 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 28 [2025-03-08 05:00:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:23,943 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2025-03-08 05:00:23,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 05:00:23,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2025-03-08 05:00:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 05:00:23,944 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:23,944 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:23,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 05:00:24,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-08 05:00:24,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:24,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash 682285849, now seen corresponding path program 1 times [2025-03-08 05:00:24,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:24,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897479178] [2025-03-08 05:00:24,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:24,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:24,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 05:00:24,177 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 05:00:24,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:24,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:00:24,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171722752] [2025-03-08 05:00:24,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:24,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:24,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:24,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:00:24,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 05:00:24,219 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 05:00:24,219 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:24,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:24,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:00:24,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:00:24,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:00:24,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:24,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897479178] [2025-03-08 05:00:24,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:00:24,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171722752] [2025-03-08 05:00:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171722752] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:00:24,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:00:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:00:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672870032] [2025-03-08 05:00:24,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:24,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:00:24,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:24,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:00:24,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:00:24,303 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 05:00:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:24,381 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2025-03-08 05:00:24,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:00:24,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2025-03-08 05:00:24,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:24,383 INFO L225 Difference]: With dead ends: 42 [2025-03-08 05:00:24,383 INFO L226 Difference]: Without dead ends: 40 [2025-03-08 05:00:24,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:00:24,384 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 117 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 [2025-03-08 05:00:24,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:00:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-08 05:00:24,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2025-03-08 05:00:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 05:00:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2025-03-08 05:00:24,393 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 28 [2025-03-08 05:00:24,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:24,393 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2025-03-08 05:00:24,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 05:00:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2025-03-08 05:00:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-08 05:00:24,398 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:24,398 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:24,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 05:00:24,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 05:00:24,599 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:24,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash -806119642, now seen corresponding path program 1 times [2025-03-08 05:00:24,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:24,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142324312] [2025-03-08 05:00:24,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:24,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:24,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 05:00:24,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 05:00:24,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:24,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:00:24,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493724052] [2025-03-08 05:00:24,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:24,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:24,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:24,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:24,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:00:24,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-08 05:00:24,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-08 05:00:24,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:24,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:24,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 05:00:24,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:00:24,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:00:24,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142324312] [2025-03-08 05:00:24,748 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:00:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493724052] [2025-03-08 05:00:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493724052] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:00:24,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:00:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:00:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288905930] [2025-03-08 05:00:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:24,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:00:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:24,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:00:24,749 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:00:24,749 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:00:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:24,815 INFO L93 Difference]: Finished difference Result 62 states and 94 transitions. [2025-03-08 05:00:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:00:24,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2025-03-08 05:00:24,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:24,818 INFO L225 Difference]: With dead ends: 62 [2025-03-08 05:00:24,818 INFO L226 Difference]: Without dead ends: 60 [2025-03-08 05:00:24,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:00:24,819 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:24,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:00:24,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-08 05:00:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2025-03-08 05:00:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 25 states have (on average 1.36) internal successors, (34), 27 states have internal predecessors, (34), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 05:00:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2025-03-08 05:00:24,835 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 33 [2025-03-08 05:00:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:24,835 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2025-03-08 05:00:24,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-08 05:00:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2025-03-08 05:00:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 05:00:24,836 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:24,836 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:24,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 05:00:25,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:25,037 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:25,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:25,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1523729273, now seen corresponding path program 1 times [2025-03-08 05:00:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:25,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46931764] [2025-03-08 05:00:25,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:25,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:25,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 05:00:25,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 05:00:25,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:25,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:00:25,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733555269] [2025-03-08 05:00:25,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:25,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:25,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:25,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:25,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:00:25,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 05:00:25,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 05:00:25,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:25,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:25,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-08 05:00:25,129 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:25,186 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-08 05:00:25,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:00:25,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46931764] [2025-03-08 05:00:25,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:00:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733555269] [2025-03-08 05:00:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733555269] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:00:25,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:00:25,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:00:25,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780909790] [2025-03-08 05:00:25,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:25,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:00:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:25,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:00:25,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:00:25,187 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-08 05:00:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:25,241 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2025-03-08 05:00:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:00:25,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2025-03-08 05:00:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:25,243 INFO L225 Difference]: With dead ends: 60 [2025-03-08 05:00:25,243 INFO L226 Difference]: Without dead ends: 56 [2025-03-08 05:00:25,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:00:25,244 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:25,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:00:25,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-08 05:00:25,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-03-08 05:00:25,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 05:00:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2025-03-08 05:00:25,251 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 38 [2025-03-08 05:00:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:25,252 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2025-03-08 05:00:25,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-08 05:00:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2025-03-08 05:00:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-08 05:00:25,252 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:25,252 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:25,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:00:25,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:25,454 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:25,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1024589713, now seen corresponding path program 1 times [2025-03-08 05:00:25,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:25,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874243904] [2025-03-08 05:00:25,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:25,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:25,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-08 05:00:25,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-08 05:00:25,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:25,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:00:25,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:25,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874243904] [2025-03-08 05:00:25,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874243904] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:00:25,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:00:25,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:00:25,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390618173] [2025-03-08 05:00:25,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:25,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:00:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:25,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:00:25,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:00:25,621 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-08 05:00:25,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:25,657 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2025-03-08 05:00:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:00:25,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2025-03-08 05:00:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:25,659 INFO L225 Difference]: With dead ends: 62 [2025-03-08 05:00:25,659 INFO L226 Difference]: Without dead ends: 60 [2025-03-08 05:00:25,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:00:25,660 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:25,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:00:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-08 05:00:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-03-08 05:00:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 33 states have internal predecessors, (40), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 05:00:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2025-03-08 05:00:25,673 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 44 [2025-03-08 05:00:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:25,674 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2025-03-08 05:00:25,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-08 05:00:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2025-03-08 05:00:25,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 05:00:25,676 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:25,676 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:25,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 05:00:25,676 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:25,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1697005566, now seen corresponding path program 1 times [2025-03-08 05:00:25,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:25,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621170352] [2025-03-08 05:00:25,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:25,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:25,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-08 05:00:25,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 05:00:25,691 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:25,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:00:25,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759146444] [2025-03-08 05:00:25,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:25,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:25,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:25,693 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:25,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 05:00:25,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-08 05:00:25,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 05:00:25,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:25,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:25,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 05:00:25,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:25,807 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-08 05:00:25,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:00:25,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:25,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621170352] [2025-03-08 05:00:25,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:00:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759146444] [2025-03-08 05:00:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759146444] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:00:25,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:00:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 05:00:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854350416] [2025-03-08 05:00:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:25,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:00:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:25,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:00:25,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 05:00:25,809 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:00:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:25,850 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2025-03-08 05:00:25,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:00:25,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2025-03-08 05:00:25,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:25,851 INFO L225 Difference]: With dead ends: 76 [2025-03-08 05:00:25,851 INFO L226 Difference]: Without dead ends: 74 [2025-03-08 05:00:25,851 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 05:00:25,852 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:25,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:00:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-08 05:00:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2025-03-08 05:00:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-08 05:00:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2025-03-08 05:00:25,866 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 45 [2025-03-08 05:00:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:25,867 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2025-03-08 05:00:25,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:00:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2025-03-08 05:00:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-08 05:00:25,867 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:25,868 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:25,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 05:00:26,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:26,073 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:26,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1630456210, now seen corresponding path program 1 times [2025-03-08 05:00:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387839496] [2025-03-08 05:00:26,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:26,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 05:00:26,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 05:00:26,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:26,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-08 05:00:26,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:26,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387839496] [2025-03-08 05:00:26,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387839496] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:00:26,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983848635] [2025-03-08 05:00:26,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:26,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:26,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:26,395 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:26,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 05:00:26,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-08 05:00:26,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-08 05:00:26,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:26,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:26,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 05:00:26,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:26,514 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:00:26,515 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:00:26,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983848635] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:00:26,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:00:26,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-08 05:00:26,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147497753] [2025-03-08 05:00:26,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:26,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:00:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:26,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:00:26,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:00:26,516 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:00:26,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:26,612 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2025-03-08 05:00:26,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:00:26,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2025-03-08 05:00:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:26,613 INFO L225 Difference]: With dead ends: 84 [2025-03-08 05:00:26,614 INFO L226 Difference]: Without dead ends: 80 [2025-03-08 05:00:26,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:00:26,615 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:26,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:00:26,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-08 05:00:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2025-03-08 05:00:26,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.186046511627907) internal successors, (51), 46 states have internal predecessors, (51), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-08 05:00:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2025-03-08 05:00:26,631 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 49 [2025-03-08 05:00:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:26,631 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2025-03-08 05:00:26,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-08 05:00:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2025-03-08 05:00:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-08 05:00:26,633 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:26,633 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:26,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 05:00:26,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:26,834 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:26,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1601374274, now seen corresponding path program 1 times [2025-03-08 05:00:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:26,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293053009] [2025-03-08 05:00:26,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:26,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:26,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-08 05:00:26,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 05:00:26,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:26,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:00:26,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413833761] [2025-03-08 05:00:26,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:26,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:26,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:26,862 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:26,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 05:00:26,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-08 05:00:26,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-08 05:00:26,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:26,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:26,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 05:00:26,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-08 05:00:27,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:00:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-08 05:00:27,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:27,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293053009] [2025-03-08 05:00:27,306 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:00:27,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413833761] [2025-03-08 05:00:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413833761] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:00:27,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 05:00:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12 [2025-03-08 05:00:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5731606] [2025-03-08 05:00:27,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 05:00:27,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 05:00:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:27,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 05:00:27,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:00:27,308 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-08 05:00:31,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-08 05:00:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:31,665 INFO L93 Difference]: Finished difference Result 131 states and 187 transitions. [2025-03-08 05:00:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 05:00:31,666 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 50 [2025-03-08 05:00:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:31,667 INFO L225 Difference]: With dead ends: 131 [2025-03-08 05:00:31,667 INFO L226 Difference]: Without dead ends: 129 [2025-03-08 05:00:31,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2025-03-08 05:00:31,668 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:31,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 220 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 186 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-08 05:00:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-03-08 05:00:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2025-03-08 05:00:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 59 states have (on average 1.305084745762712) internal successors, (77), 62 states have internal predecessors, (77), 40 states have call successors, (40), 12 states have call predecessors, (40), 12 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2025-03-08 05:00:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 155 transitions. [2025-03-08 05:00:31,690 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 155 transitions. Word has length 50 [2025-03-08 05:00:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:31,690 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 155 transitions. [2025-03-08 05:00:31,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-08 05:00:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 155 transitions. [2025-03-08 05:00:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-08 05:00:31,691 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:31,691 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:31,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 05:00:31,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:31,892 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:31,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:31,892 INFO L85 PathProgramCache]: Analyzing trace with hash -750050, now seen corresponding path program 2 times [2025-03-08 05:00:31,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:31,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978648798] [2025-03-08 05:00:31,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:00:31,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:31,898 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-03-08 05:00:31,913 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-08 05:00:31,913 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:00:31,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:00:31,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690800970] [2025-03-08 05:00:31,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:00:31,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:31,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:31,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 05:00:31,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-03-08 05:00:31,964 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-08 05:00:31,965 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:00:31,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:31,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-08 05:00:31,971 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 05:00:32,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:00:32,191 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-08 05:00:32,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978648798] [2025-03-08 05:00:32,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:00:32,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690800970] [2025-03-08 05:00:32,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690800970] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:00:32,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-08 05:00:32,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-03-08 05:00:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983507939] [2025-03-08 05:00:32,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-08 05:00:32,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 05:00:32,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:32,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 05:00:32,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:00:32,194 INFO L87 Difference]: Start difference. First operand 112 states and 155 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-08 05:00:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:32,538 INFO L93 Difference]: Finished difference Result 135 states and 193 transitions. [2025-03-08 05:00:32,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 05:00:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 55 [2025-03-08 05:00:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:32,540 INFO L225 Difference]: With dead ends: 135 [2025-03-08 05:00:32,540 INFO L226 Difference]: Without dead ends: 117 [2025-03-08 05:00:32,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:00:32,541 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:32,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 174 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 05:00:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-08 05:00:32,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 104. [2025-03-08 05:00:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 58 states have internal predecessors, (72), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 05:00:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 142 transitions. [2025-03-08 05:00:32,563 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 142 transitions. Word has length 55 [2025-03-08 05:00:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:32,564 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 142 transitions. [2025-03-08 05:00:32,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-08 05:00:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 142 transitions. [2025-03-08 05:00:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-08 05:00:32,565 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:32,565 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:32,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 05:00:32,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-08 05:00:32,765 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:32,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:32,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1705449702, now seen corresponding path program 1 times [2025-03-08 05:00:32,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:32,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536635934] [2025-03-08 05:00:32,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:32,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-08 05:00:32,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 05:00:32,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:32,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-08 05:00:32,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124130004] [2025-03-08 05:00:32,789 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:32,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:32,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:32,792 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:32,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 05:00:32,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-08 05:00:32,836 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-08 05:00:32,836 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:32,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:32,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 05:00:32,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-08 05:00:32,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:00:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-08 05:00:33,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536635934] [2025-03-08 05:00:33,037 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-08 05:00:33,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124130004] [2025-03-08 05:00:33,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124130004] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 05:00:33,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:00:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-08 05:00:33,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610345051] [2025-03-08 05:00:33,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:00:33,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 05:00:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:33,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 05:00:33,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:00:33,038 INFO L87 Difference]: Start difference. First operand 104 states and 142 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:00:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:33,083 INFO L93 Difference]: Finished difference Result 110 states and 147 transitions. [2025-03-08 05:00:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 05:00:33,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2025-03-08 05:00:33,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:33,084 INFO L225 Difference]: With dead ends: 110 [2025-03-08 05:00:33,084 INFO L226 Difference]: Without dead ends: 105 [2025-03-08 05:00:33,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-08 05:00:33,085 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:33,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:00:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-08 05:00:33,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2025-03-08 05:00:33,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 33 states have call successors, (33), 12 states have call predecessors, (33), 11 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-08 05:00:33,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 138 transitions. [2025-03-08 05:00:33,103 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 138 transitions. Word has length 62 [2025-03-08 05:00:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:33,103 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 138 transitions. [2025-03-08 05:00:33,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-08 05:00:33,104 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 138 transitions. [2025-03-08 05:00:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 05:00:33,104 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:00:33,105 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:33,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 05:00:33,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 05:00:33,309 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:00:33,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:00:33,310 INFO L85 PathProgramCache]: Analyzing trace with hash 501411722, now seen corresponding path program 1 times [2025-03-08 05:00:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:00:33,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559460909] [2025-03-08 05:00:33,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:33,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:00:33,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 05:00:33,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 05:00:33,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:33,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:33,475 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-08 05:00:33,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:00:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559460909] [2025-03-08 05:00:33,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559460909] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:00:33,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756775736] [2025-03-08 05:00:33,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:00:33,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:00:33,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:00:33,478 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 05:00:33,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 05:00:33,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 05:00:33,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 05:00:33,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:00:33,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:00:33,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 05:00:33,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:00:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-08 05:00:33,559 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:00:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-08 05:00:33,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756775736] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:00:33,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:00:33,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-03-08 05:00:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659434756] [2025-03-08 05:00:33,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:00:33,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 05:00:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:00:33,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 05:00:33,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:00:33,655 INFO L87 Difference]: Start difference. First operand 103 states and 138 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-08 05:00:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:00:33,742 INFO L93 Difference]: Finished difference Result 115 states and 152 transitions. [2025-03-08 05:00:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 05:00:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 66 [2025-03-08 05:00:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:00:33,743 INFO L225 Difference]: With dead ends: 115 [2025-03-08 05:00:33,743 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 05:00:33,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:00:33,746 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:00:33,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 133 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:00:33,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 05:00:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 05:00:33,747 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) [2025-03-08 05:00:33,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 05:00:33,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2025-03-08 05:00:33,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:00:33,747 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 05:00:33,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-08 05:00:33,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 05:00:33,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 05:00:33,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 05:00:33,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-08 05:00:33,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 05:00:33,953 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:00:33,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 05:00:37,885 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 05:00:37,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:00:37 BoogieIcfgContainer [2025-03-08 05:00:37,895 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 05:00:37,896 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 05:00:37,896 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 05:00:37,896 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 05:00:37,896 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:00:23" (3/4) ... [2025-03-08 05:00:37,898 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 05:00:37,902 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-08 05:00:37,903 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-08 05:00:37,905 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-08 05:00:37,905 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 05:00:37,905 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 05:00:37,905 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 05:00:37,959 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 05:00:37,959 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 05:00:37,959 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 05:00:37,960 INFO L158 Benchmark]: Toolchain (without parser) took 14792.47ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 123.4MB in the beginning and 300.4MB in the end (delta: -177.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-08 05:00:37,960 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 05:00:37,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.41ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 111.8MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:00:37,960 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.97ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 111.1MB in the end (delta: 729.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 05:00:37,960 INFO L158 Benchmark]: Boogie Preprocessor took 21.34ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:00:37,960 INFO L158 Benchmark]: IcfgBuilder took 204.53ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 97.5MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:00:37,960 INFO L158 Benchmark]: TraceAbstraction took 14310.93ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 96.8MB in the beginning and 306.9MB in the end (delta: -210.2MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. [2025-03-08 05:00:37,960 INFO L158 Benchmark]: Witness Printer took 63.07ms. Allocated memory is still 377.5MB. Free memory was 306.9MB in the beginning and 300.4MB in the end (delta: 6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 05:00:37,961 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 117.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 163.41ms. Allocated memory is still 167.8MB. Free memory was 123.4MB in the beginning and 111.8MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.97ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 111.1MB in the end (delta: 729.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.34ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 109.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 204.53ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 97.5MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14310.93ms. Allocated memory was 167.8MB in the beginning and 377.5MB in the end (delta: 209.7MB). Free memory was 96.8MB in the beginning and 306.9MB in the end (delta: -210.2MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. * Witness Printer took 63.07ms. Allocated memory is still 377.5MB. Free memory was 306.9MB in the beginning and 300.4MB in the end (delta: 6.5MB). 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: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 55 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 1415 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1059 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 592 IncrementalHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 356 mSDtfsCounter, 592 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 717 GetRequests, 636 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=8, InterpolantAutomatonStates: 67, 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, 11 MinimizatonAttempts, 44 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 856 ConstructedInterpolants, 0 QuantifiedInterpolants, 2190 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1160 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 1127/1181 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: 35]: Location Invariant Derived location invariant: (((((((__int128) p * s) == (((__int128) q * r) + 1)) && (1 <= y)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && ((((__int128) r * y) + ((__int128) p * x)) == a)) && (y <= 50)) RESULT: Ultimate proved your program to be correct! [2025-03-08 05:00:37,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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