./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/ps4-ll_unwindbound100.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 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 14:08:46,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 14:08:46,647 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 14:08:46,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 14:08:46,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 14:08:46,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 14:08:46,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 14:08:46,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 14:08:46,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 14:08:46,672 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 14:08:46,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 14:08:46,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 14:08:46,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 14:08:46,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 14:08:46,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 14:08:46,674 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 14:08:46,675 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:08:46,675 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 14:08:46,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 14:08:46,676 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 14:08:46,676 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 14:08:46,676 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 -> 47fbdb3da16165eeeef0687b73275c90a2682f5a520ac2387154637187559fe6 [2025-03-03 14:08:46,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 14:08:46,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 14:08:46,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 14:08:46,880 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 14:08:46,880 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 14:08:46,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2025-03-03 14:08:48,032 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af167121/f92502906c7547f79c916304ff9bc915/FLAG5271e2a70 [2025-03-03 14:08:48,219 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 14:08:48,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound100.c [2025-03-03 14:08:48,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af167121/f92502906c7547f79c916304ff9bc915/FLAG5271e2a70 [2025-03-03 14:08:48,247 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5af167121/f92502906c7547f79c916304ff9bc915 [2025-03-03 14:08:48,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 14:08:48,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 14:08:48,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 14:08:48,255 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 14:08:48,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 14:08:48,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,261 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35249644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48, skipping insertion in model container [2025-03-03 14:08:48,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 14:08:48,378 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/ps4-ll_unwindbound100.c[458,471] [2025-03-03 14:08:48,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:08:48,400 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 14:08:48,407 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/ps4-ll_unwindbound100.c[458,471] [2025-03-03 14:08:48,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 14:08:48,424 INFO L204 MainTranslator]: Completed translation [2025-03-03 14:08:48,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48 WrapperNode [2025-03-03 14:08:48,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 14:08:48,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 14:08:48,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 14:08:48,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 14:08:48,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,448 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2025-03-03 14:08:48,449 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 14:08:48,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 14:08:48,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 14:08:48,449 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 14:08:48,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,465 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]. [2025-03-03 14:08:48,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,466 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,469 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 14:08:48,475 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 14:08:48,475 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 14:08:48,475 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 14:08:48,476 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (1/1) ... [2025-03-03 14:08:48,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 14:08:48,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:48,502 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) [2025-03-03 14:08:48,507 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 [2025-03-03 14:08:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 14:08:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 14:08:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 14:08:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 14:08:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 14:08:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 14:08:48,560 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 14:08:48,561 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 14:08:48,655 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-03 14:08:48,655 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 14:08:48,662 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 14:08:48,662 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 14:08:48,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:08:48 BoogieIcfgContainer [2025-03-03 14:08:48,663 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 14:08:48,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 14:08:48,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 14:08:48,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 14:08:48,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 02:08:48" (1/3) ... [2025-03-03 14:08:48,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22eb1e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:08:48, skipping insertion in model container [2025-03-03 14:08:48,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 02:08:48" (2/3) ... [2025-03-03 14:08:48,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22eb1e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 02:08:48, skipping insertion in model container [2025-03-03 14:08:48,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 02:08:48" (3/3) ... [2025-03-03 14:08:48,671 INFO L128 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound100.c [2025-03-03 14:08:48,681 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 14:08:48,682 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ps4-ll_unwindbound100.c that has 2 procedures, 18 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 14:08:48,717 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 14:08:48,723 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;@63af91ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 14:08:48,724 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 14:08:48,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 14:08:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-03 14:08:48,730 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:48,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:48,730 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:48,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1710924184, now seen corresponding path program 1 times [2025-03-03 14:08:48,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:48,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364658204] [2025-03-03 14:08:48,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:48,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:48,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-03 14:08:48,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 14:08:48,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:48,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:48,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364658204] [2025-03-03 14:08:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364658204] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:08:48,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:08:48,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 14:08:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467951557] [2025-03-03 14:08:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:08:48,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 14:08:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:48,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 14:08:48,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:08:48,852 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:08:48,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:48,865 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2025-03-03 14:08:48,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 14:08:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-03 14:08:48,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:48,871 INFO L225 Difference]: With dead ends: 34 [2025-03-03 14:08:48,871 INFO L226 Difference]: Without dead ends: 14 [2025-03-03 14:08:48,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 14:08:48,874 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:48,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:08:48,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-03 14:08:48,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-03 14:08:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 14:08:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2025-03-03 14:08:48,898 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2025-03-03 14:08:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:48,898 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2025-03-03 14:08:48,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:08:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2025-03-03 14:08:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 14:08:48,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:48,900 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:48,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 14:08:48,901 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:48,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1541343401, now seen corresponding path program 1 times [2025-03-03 14:08:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:48,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708459729] [2025-03-03 14:08:48,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:48,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:48,909 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 14:08:48,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 14:08:48,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:48,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 14:08:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133027140] [2025-03-03 14:08:48,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:48,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:48,928 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) [2025-03-03 14:08:48,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 14:08:48,963 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 14:08:48,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 14:08:48,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:48,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:48,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 14:08:48,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:49,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 14:08:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708459729] [2025-03-03 14:08:49,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 14:08:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133027140] [2025-03-03 14:08:49,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133027140] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 14:08:49,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 14:08:49,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 14:08:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553490293] [2025-03-03 14:08:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 14:08:49,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 14:08:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:49,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 14:08:49,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 14:08:49,067 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:08:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:49,114 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2025-03-03 14:08:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 14:08:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-03 14:08:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:49,116 INFO L225 Difference]: With dead ends: 26 [2025-03-03 14:08:49,116 INFO L226 Difference]: Without dead ends: 22 [2025-03-03 14:08:49,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 14:08:49,116 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:49,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:08:49,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-03 14:08:49,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-03-03 14:08:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-03 14:08:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2025-03-03 14:08:49,121 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2025-03-03 14:08:49,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:49,121 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2025-03-03 14:08:49,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 14:08:49,121 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2025-03-03 14:08:49,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-03 14:08:49,121 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:49,121 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:49,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 14:08:49,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:49,325 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:49,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:49,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1287473565, now seen corresponding path program 1 times [2025-03-03 14:08:49,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:49,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728314788] [2025-03-03 14:08:49,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:49,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:49,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-03 14:08:49,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-03 14:08:49,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:49,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 14:08:49,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099318185] [2025-03-03 14:08:49,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:49,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:49,354 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) [2025-03-03 14:08:49,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 14:08:49,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-03 14:08:49,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-03 14:08:49,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:49,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:49,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-03 14:08:49,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:49,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:08:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:49,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:49,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728314788] [2025-03-03 14:08:49,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 14:08:49,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099318185] [2025-03-03 14:08:49,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099318185] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:08:49,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 14:08:49,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2025-03-03 14:08:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982619330] [2025-03-03 14:08:49,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 14:08:49,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 14:08:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:49,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 14:08:49,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-03 14:08:49,607 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 14:08:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:49,680 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2025-03-03 14:08:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 14:08:49,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2025-03-03 14:08:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:49,681 INFO L225 Difference]: With dead ends: 34 [2025-03-03 14:08:49,681 INFO L226 Difference]: Without dead ends: 28 [2025-03-03 14:08:49,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:08:49,682 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:49,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 70 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:08:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-03 14:08:49,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2025-03-03 14:08:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 14:08:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-03-03 14:08:49,687 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2025-03-03 14:08:49,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:49,687 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-03-03 14:08:49,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-03 14:08:49,687 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-03-03 14:08:49,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-03 14:08:49,688 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:49,688 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:49,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 14:08:49,892 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,SelfDestructingSolverStorable2 [2025-03-03 14:08:49,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:49,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1288337504, now seen corresponding path program 1 times [2025-03-03 14:08:49,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:49,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992881199] [2025-03-03 14:08:49,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:49,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:49,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-03 14:08:49,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-03 14:08:49,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:49,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:50,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992881199] [2025-03-03 14:08:50,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992881199] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:08:50,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096369194] [2025-03-03 14:08:50,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:50,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:50,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:50,017 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) [2025-03-03 14:08:50,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 14:08:50,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-03 14:08:50,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-03 14:08:50,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:50,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:50,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 14:08:50,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:50,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:08:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:50,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096369194] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:08:50,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:08:50,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 5] total 10 [2025-03-03 14:08:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626696455] [2025-03-03 14:08:50,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:08:50,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-03 14:08:50,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:50,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-03 14:08:50,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-03-03 14:08:50,116 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 14:08:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:50,169 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2025-03-03 14:08:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:08:50,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2025-03-03 14:08:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:50,171 INFO L225 Difference]: With dead ends: 56 [2025-03-03 14:08:50,171 INFO L226 Difference]: Without dead ends: 51 [2025-03-03 14:08:50,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:08:50,171 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:50,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 57 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:08:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-03-03 14:08:50,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2025-03-03 14:08:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 14:08:50,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2025-03-03 14:08:50,181 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 16 [2025-03-03 14:08:50,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:50,181 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2025-03-03 14:08:50,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 14:08:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2025-03-03 14:08:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-03 14:08:50,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:50,182 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:50,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 14:08:50,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:50,382 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:50,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1900616027, now seen corresponding path program 1 times [2025-03-03 14:08:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418230253] [2025-03-03 14:08:50,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:50,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-03 14:08:50,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-03 14:08:50,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:50,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 14:08:50,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168054106] [2025-03-03 14:08:50,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 14:08:50,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:50,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:50,402 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) [2025-03-03 14:08:50,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 14:08:50,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-03 14:08:50,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-03 14:08:50,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 14:08:50,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:50,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 14:08:50,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 14:08:50,494 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:08:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-03 14:08:50,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418230253] [2025-03-03 14:08:50,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 14:08:50,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168054106] [2025-03-03 14:08:50,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168054106] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:08:50,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 14:08:50,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2025-03-03 14:08:50,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616198485] [2025-03-03 14:08:50,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 14:08:50,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 14:08:50,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:50,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 14:08:50,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-03 14:08:50,571 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 14:08:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:50,647 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2025-03-03 14:08:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 14:08:50,647 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 22 [2025-03-03 14:08:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:50,648 INFO L225 Difference]: With dead ends: 49 [2025-03-03 14:08:50,648 INFO L226 Difference]: Without dead ends: 43 [2025-03-03 14:08:50,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-03 14:08:50,649 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:50,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 114 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 14:08:50,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-03-03 14:08:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-03-03 14:08:50,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-03-03 14:08:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2025-03-03 14:08:50,657 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 22 [2025-03-03 14:08:50,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:50,657 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2025-03-03 14:08:50,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-03-03 14:08:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2025-03-03 14:08:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-03 14:08:50,658 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:50,658 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:50,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 14:08:50,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:50,859 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:50,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1437496526, now seen corresponding path program 2 times [2025-03-03 14:08:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:50,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950888092] [2025-03-03 14:08:50,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 14:08:50,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:50,865 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-03 14:08:50,891 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-03 14:08:50,891 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 14:08:50,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:08:51,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:51,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950888092] [2025-03-03 14:08:51,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950888092] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:08:51,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551579992] [2025-03-03 14:08:51,061 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 14:08:51,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:51,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:51,063 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) [2025-03-03 14:08:51,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 14:08:51,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 40 statements into 2 equivalence classes. [2025-03-03 14:08:51,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 40 of 40 statements. [2025-03-03 14:08:51,104 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 14:08:51,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:51,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 14:08:51,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:51,166 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:08:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 14:08:51,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551579992] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:08:51,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:08:51,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 16 [2025-03-03 14:08:51,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555960229] [2025-03-03 14:08:51,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:08:51,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-03 14:08:51,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:51,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-03 14:08:51,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2025-03-03 14:08:51,270 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2025-03-03 14:08:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:51,435 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2025-03-03 14:08:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-03 14:08:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 40 [2025-03-03 14:08:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:51,436 INFO L225 Difference]: With dead ends: 119 [2025-03-03 14:08:51,436 INFO L226 Difference]: Without dead ends: 114 [2025-03-03 14:08:51,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=356, Unknown=0, NotChecked=0, Total=552 [2025-03-03 14:08:51,437 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 67 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:51,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 93 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:08:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-03-03 14:08:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 89. [2025-03-03 14:08:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 14:08:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2025-03-03 14:08:51,454 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 40 [2025-03-03 14:08:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:51,454 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2025-03-03 14:08:51,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2025-03-03 14:08:51,454 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2025-03-03 14:08:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-03 14:08:51,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:51,454 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:51,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 14:08:51,655 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 [2025-03-03 14:08:51,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:51,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 332791, now seen corresponding path program 2 times [2025-03-03 14:08:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:51,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918972821] [2025-03-03 14:08:51,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 14:08:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:51,670 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-03 14:08:51,682 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-03-03 14:08:51,682 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 14:08:51,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 14:08:51,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825269540] [2025-03-03 14:08:51,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 14:08:51,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:51,686 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) [2025-03-03 14:08:51,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 14:08:51,714 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-03-03 14:08:51,730 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-03-03 14:08:51,730 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 14:08:51,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:51,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-03 14:08:51,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-03 14:08:51,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:08:52,146 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 53 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-03 14:08:52,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918972821] [2025-03-03 14:08:52,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 14:08:52,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825269540] [2025-03-03 14:08:52,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825269540] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:08:52,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 14:08:52,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2025-03-03 14:08:52,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744069208] [2025-03-03 14:08:52,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 14:08:52,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 14:08:52,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:52,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 14:08:52,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2025-03-03 14:08:52,148 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 22 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 14:08:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:52,356 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2025-03-03 14:08:52,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 14:08:52,356 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 46 [2025-03-03 14:08:52,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:52,357 INFO L225 Difference]: With dead ends: 95 [2025-03-03 14:08:52,357 INFO L226 Difference]: Without dead ends: 89 [2025-03-03 14:08:52,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2025-03-03 14:08:52,358 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:52,358 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 206 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:08:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-03-03 14:08:52,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2025-03-03 14:08:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 67 states have internal predecessors, (68), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 14:08:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2025-03-03 14:08:52,375 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 46 [2025-03-03 14:08:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:52,375 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2025-03-03 14:08:52,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 14:08:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2025-03-03 14:08:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 14:08:52,377 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:52,377 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:52,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 14:08:52,578 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 [2025-03-03 14:08:52,578 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:52,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1461530326, now seen corresponding path program 3 times [2025-03-03 14:08:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:52,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352302598] [2025-03-03 14:08:52,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 14:08:52,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:52,584 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 88 statements into 11 equivalence classes. [2025-03-03 14:08:52,630 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:08:52,630 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-03 14:08:52,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-03 14:08:52,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:52,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352302598] [2025-03-03 14:08:52,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352302598] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:08:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708554308] [2025-03-03 14:08:52,979 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 14:08:52,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:52,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:52,981 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) [2025-03-03 14:08:52,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 14:08:53,007 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 88 statements into 11 equivalence classes. [2025-03-03 14:08:53,067 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 14:08:53,067 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-03-03 14:08:53,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:53,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-03 14:08:53,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:53,195 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:08:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-03 14:08:53,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708554308] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:08:53,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:08:53,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 28 [2025-03-03 14:08:53,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590048098] [2025-03-03 14:08:53,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:08:53,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-03 14:08:53,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:53,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-03 14:08:53,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=426, Unknown=0, NotChecked=0, Total=756 [2025-03-03 14:08:53,448 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2025-03-03 14:08:53,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:08:53,830 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2025-03-03 14:08:53,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-03-03 14:08:53,831 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) Word has length 88 [2025-03-03 14:08:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:08:53,833 INFO L225 Difference]: With dead ends: 190 [2025-03-03 14:08:53,835 INFO L226 Difference]: Without dead ends: 185 [2025-03-03 14:08:53,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=820, Invalid=1436, Unknown=0, NotChecked=0, Total=2256 [2025-03-03 14:08:53,837 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 80 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 14:08:53,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 138 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 14:08:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-03-03 14:08:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2025-03-03 14:08:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 139 states have (on average 1.0071942446043165) internal successors, (140), 139 states have internal predecessors, (140), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-03 14:08:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2025-03-03 14:08:53,878 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 88 [2025-03-03 14:08:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:08:53,878 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2025-03-03 14:08:53,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 21 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (30), 20 states have call predecessors, (30), 20 states have call successors, (30) [2025-03-03 14:08:53,879 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2025-03-03 14:08:53,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-03-03 14:08:53,880 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:08:53,880 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2025-03-03 14:08:53,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-03 14:08:54,080 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 [2025-03-03 14:08:54,081 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:08:54,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:08:54,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1822265826, now seen corresponding path program 4 times [2025-03-03 14:08:54,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:08:54,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680439108] [2025-03-03 14:08:54,081 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 14:08:54,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:08:54,091 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 184 statements into 2 equivalence classes. [2025-03-03 14:08:54,131 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 184 of 184 statements. [2025-03-03 14:08:54,131 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 14:08:54,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-03 14:08:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:08:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680439108] [2025-03-03 14:08:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680439108] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:08:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261243790] [2025-03-03 14:08:55,065 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 14:08:55,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:08:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:08:55,071 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) [2025-03-03 14:08:55,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 14:08:55,105 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 184 statements into 2 equivalence classes. [2025-03-03 14:08:59,063 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 184 of 184 statements. [2025-03-03 14:08:59,063 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 14:08:59,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:08:59,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-03 14:08:59,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:08:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:08:59,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:08:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-03 14:08:59,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261243790] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:08:59,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:08:59,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 50 [2025-03-03 14:08:59,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392596217] [2025-03-03 14:08:59,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:08:59,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-03-03 14:08:59,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:08:59,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-03-03 14:08:59,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=1317, Unknown=0, NotChecked=0, Total=2450 [2025-03-03 14:08:59,991 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand has 50 states, 50 states have (on average 4.24) internal successors, (212), 50 states have internal predecessors, (212), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2025-03-03 14:09:01,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:09:01,141 INFO L93 Difference]: Finished difference Result 382 states and 405 transitions. [2025-03-03 14:09:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2025-03-03 14:09:01,142 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.24) internal successors, (212), 50 states have internal predecessors, (212), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) Word has length 184 [2025-03-03 14:09:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:09:01,144 INFO L225 Difference]: With dead ends: 382 [2025-03-03 14:09:01,144 INFO L226 Difference]: Without dead ends: 377 [2025-03-03 14:09:01,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3316, Invalid=5614, Unknown=0, NotChecked=0, Total=8930 [2025-03-03 14:09:01,151 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 245 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 14:09:01,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 224 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 14:09:01,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2025-03-03 14:09:01,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2025-03-03 14:09:01,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 283 states have (on average 1.0035335689045937) internal successors, (284), 283 states have internal predecessors, (284), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2025-03-03 14:09:01,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2025-03-03 14:09:01,196 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 184 [2025-03-03 14:09:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:09:01,196 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2025-03-03 14:09:01,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.24) internal successors, (212), 50 states have internal predecessors, (212), 45 states have call successors, (67), 24 states have call predecessors, (67), 23 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2025-03-03 14:09:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2025-03-03 14:09:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2025-03-03 14:09:01,203 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:09:01,203 INFO L218 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2025-03-03 14:09:01,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 14:09:01,407 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 [2025-03-03 14:09:01,407 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:09:01,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:09:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1000026962, now seen corresponding path program 5 times [2025-03-03 14:09:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:09:01,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022031611] [2025-03-03 14:09:01,407 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 14:09:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:09:01,422 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 376 statements into 47 equivalence classes. [2025-03-03 14:09:01,627 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 376 of 376 statements. [2025-03-03 14:09:01,627 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-03 14:09:01,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:09:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-03 14:09:04,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:09:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022031611] [2025-03-03 14:09:04,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022031611] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:09:04,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617622197] [2025-03-03 14:09:04,297 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 14:09:04,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:09:04,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:09:04,299 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) [2025-03-03 14:09:04,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 14:09:04,352 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 376 statements into 47 equivalence classes. [2025-03-03 14:09:05,350 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 376 of 376 statements. [2025-03-03 14:09:05,350 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-03 14:09:05,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:09:05,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 95 conjuncts are in the unsatisfiable core [2025-03-03 14:09:05,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 14:09:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 14:09:05,703 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 14:09:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8464 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2025-03-03 14:09:07,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617622197] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 14:09:07,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 14:09:07,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 50] total 98 [2025-03-03 14:09:07,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565748333] [2025-03-03 14:09:07,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 14:09:07,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2025-03-03 14:09:07,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 14:09:07,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2025-03-03 14:09:07,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4565, Invalid=4941, Unknown=0, NotChecked=0, Total=9506 [2025-03-03 14:09:07,686 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand has 98 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2025-03-03 14:09:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 14:09:10,994 INFO L93 Difference]: Finished difference Result 766 states and 813 transitions. [2025-03-03 14:09:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2025-03-03 14:09:10,994 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) Word has length 376 [2025-03-03 14:09:10,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 14:09:10,998 INFO L225 Difference]: With dead ends: 766 [2025-03-03 14:09:10,998 INFO L226 Difference]: Without dead ends: 761 [2025-03-03 14:09:11,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=13540, Invalid=22750, Unknown=0, NotChecked=0, Total=36290 [2025-03-03 14:09:11,004 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 506 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 14:09:11,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 432 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 14:09:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2025-03-03 14:09:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 761. [2025-03-03 14:09:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 571 states have (on average 1.001751313485114) internal successors, (572), 571 states have internal predecessors, (572), 95 states have call successors, (95), 95 states have call predecessors, (95), 94 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2025-03-03 14:09:11,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 761 transitions. [2025-03-03 14:09:11,075 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 761 transitions. Word has length 376 [2025-03-03 14:09:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 14:09:11,076 INFO L471 AbstractCegarLoop]: Abstraction has 761 states and 761 transitions. [2025-03-03 14:09:11,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.36734693877551) internal successors, (428), 98 states have internal predecessors, (428), 93 states have call successors, (139), 48 states have call predecessors, (139), 47 states have return successors, (138), 92 states have call predecessors, (138), 92 states have call successors, (138) [2025-03-03 14:09:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 761 transitions. [2025-03-03 14:09:11,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2025-03-03 14:09:11,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 14:09:11,085 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2025-03-03 14:09:11,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-03 14:09:11,286 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 [2025-03-03 14:09:11,286 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 14:09:11,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 14:09:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1984498126, now seen corresponding path program 6 times [2025-03-03 14:09:11,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 14:09:11,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58506216] [2025-03-03 14:09:11,287 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 14:09:11,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 14:09:11,307 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 760 statements into 95 equivalence classes. [2025-03-03 14:09:11,767 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 760 of 760 statements. [2025-03-03 14:09:11,768 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-03-03 14:09:11,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 14:09:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 35344 backedges. 188 proven. 17672 refuted. 0 times theorem prover too weak. 17484 trivial. 0 not checked. [2025-03-03 14:09:22,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 14:09:22,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58506216] [2025-03-03 14:09:22,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58506216] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 14:09:22,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280690240] [2025-03-03 14:09:22,563 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 14:09:22,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 14:09:22,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 14:09:22,566 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) [2025-03-03 14:09:22,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 14:09:22,643 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 760 statements into 95 equivalence classes.