./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gj2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-lit/gj2007.i -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 e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 04:43:17,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 04:43:17,508 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 04:43:17,514 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 04:43:17,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 04:43:17,537 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 04:43:17,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 04:43:17,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 04:43:17,539 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 04:43:17,539 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 04:43:17,540 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 04:43:17,540 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 04:43:17,540 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 04:43:17,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 04:43:17,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 04:43:17,542 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:43:17,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 04:43:17,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 04:43:17,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 04:43:17,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 04:43:17,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 04:43:17,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 04:43:17,543 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 -> e210f4af0021f1e0c887bbfa24b18aad98424108efaad4cfc57802fd9fd5ce53 [2025-03-08 04:43:17,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 04:43:17,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 04:43:17,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 04:43:17,758 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 04:43:17,758 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 04:43:17,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gj2007.i [2025-03-08 04:43:18,879 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703b30688/974311ed7e914994b5d3ed3a48d4dd39/FLAGec4600ce6 [2025-03-08 04:43:19,089 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 04:43:19,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gj2007.i [2025-03-08 04:43:19,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703b30688/974311ed7e914994b5d3ed3a48d4dd39/FLAGec4600ce6 [2025-03-08 04:43:19,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703b30688/974311ed7e914994b5d3ed3a48d4dd39 [2025-03-08 04:43:19,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 04:43:19,146 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 04:43:19,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 04:43:19,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 04:43:19,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 04:43:19,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2babc525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19, skipping insertion in model container [2025-03-08 04:43:19,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,165 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 04:43:19,272 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/loop-lit/gj2007.i[895,908] [2025-03-08 04:43:19,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:43:19,288 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 04:43:19,295 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/loop-lit/gj2007.i[895,908] [2025-03-08 04:43:19,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 04:43:19,305 INFO L204 MainTranslator]: Completed translation [2025-03-08 04:43:19,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19 WrapperNode [2025-03-08 04:43:19,306 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 04:43:19,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 04:43:19,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 04:43:19,307 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 04:43:19,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,332 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2025-03-08 04:43:19,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 04:43:19,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 04:43:19,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 04:43:19,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 04:43:19,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,346 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 04:43:19,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,352 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 04:43:19,356 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 04:43:19,357 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 04:43:19,357 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 04:43:19,358 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (1/1) ... [2025-03-08 04:43:19,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 04:43:19,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:19,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 04:43:19,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 04:43:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 04:43:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 04:43:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 04:43:19,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 04:43:19,446 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 04:43:19,447 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 04:43:19,529 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-03-08 04:43:19,530 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 04:43:19,535 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 04:43:19,535 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 04:43:19,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:43:19 BoogieIcfgContainer [2025-03-08 04:43:19,536 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 04:43:19,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 04:43:19,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 04:43:19,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 04:43:19,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 04:43:19" (1/3) ... [2025-03-08 04:43:19,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20df733e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:43:19, skipping insertion in model container [2025-03-08 04:43:19,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 04:43:19" (2/3) ... [2025-03-08 04:43:19,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20df733e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 04:43:19, skipping insertion in model container [2025-03-08 04:43:19,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:43:19" (3/3) ... [2025-03-08 04:43:19,543 INFO L128 eAbstractionObserver]: Analyzing ICFG gj2007.i [2025-03-08 04:43:19,554 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 04:43:19,555 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG gj2007.i that has 1 procedures, 11 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 04:43:19,596 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 04:43:19,607 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;@33284449, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 04:43:19,607 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 04:43:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-08 04:43:19,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:19,616 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-08 04:43:19,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:19,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 41000295, now seen corresponding path program 1 times [2025-03-08 04:43:19,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:19,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209832540] [2025-03-08 04:43:19,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:19,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-08 04:43:19,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-08 04:43:19,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:19,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:19,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209832540] [2025-03-08 04:43:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209832540] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:43:19,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 04:43:19,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 04:43:19,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287631886] [2025-03-08 04:43:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:43:19,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 04:43:19,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:19,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 04:43:19,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 04:43:19,768 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:19,795 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2025-03-08 04:43:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 04:43:19,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-03-08 04:43:19,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:19,802 INFO L225 Difference]: With dead ends: 22 [2025-03-08 04:43:19,802 INFO L226 Difference]: Without dead ends: 9 [2025-03-08 04:43:19,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 04:43:19,807 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:19,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-03-08 04:43:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-03-08 04:43:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2025-03-08 04:43:19,825 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2025-03-08 04:43:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:19,826 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2025-03-08 04:43:19,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2025-03-08 04:43:19,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 04:43:19,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:19,826 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 04:43:19,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 04:43:19,827 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:19,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 749440841, now seen corresponding path program 1 times [2025-03-08 04:43:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117565395] [2025-03-08 04:43:19,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:19,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:43:19,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:43:19,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:19,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117565395] [2025-03-08 04:43:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117565395] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511020650] [2025-03-08 04:43:19,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:19,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:19,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:19,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:19,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 04:43:19,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 04:43:19,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 04:43:19,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:19,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:19,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 04:43:19,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:19,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:20,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511020650] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:20,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:20,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 04:43:20,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350643862] [2025-03-08 04:43:20,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:20,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 04:43:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:20,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 04:43:20,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:43:20,009 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:20,040 INFO L93 Difference]: Finished difference Result 19 states and 26 transitions. [2025-03-08 04:43:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 04:43:20,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 04:43:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:20,042 INFO L225 Difference]: With dead ends: 19 [2025-03-08 04:43:20,042 INFO L226 Difference]: Without dead ends: 14 [2025-03-08 04:43:20,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 04:43:20,043 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:20,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-03-08 04:43:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-03-08 04:43:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-03-08 04:43:20,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2025-03-08 04:43:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:20,045 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-03-08 04:43:20,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-03-08 04:43:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 04:43:20,046 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:20,046 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2025-03-08 04:43:20,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 04:43:20,247 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 [2025-03-08 04:43:20,247 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:20,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1263431955, now seen corresponding path program 1 times [2025-03-08 04:43:20,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:20,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950896511] [2025-03-08 04:43:20,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:20,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:43:20,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:43:20,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:20,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,318 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950896511] [2025-03-08 04:43:20,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950896511] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:20,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30893118] [2025-03-08 04:43:20,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 04:43:20,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:20,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:20,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:20,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 04:43:20,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 04:43:20,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 04:43:20,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:20,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-08 04:43:20,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:20,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:20,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30893118] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:20,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-08 04:43:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136634369] [2025-03-08 04:43:20,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:20,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 04:43:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:20,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 04:43:20,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-08 04:43:20,420 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:20,456 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2025-03-08 04:43:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 04:43:20,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 04:43:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:20,457 INFO L225 Difference]: With dead ends: 30 [2025-03-08 04:43:20,457 INFO L226 Difference]: Without dead ends: 22 [2025-03-08 04:43:20,457 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-08 04:43:20,458 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:20,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-03-08 04:43:20,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-03-08 04:43:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2025-03-08 04:43:20,462 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2025-03-08 04:43:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:20,462 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2025-03-08 04:43:20,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2025-03-08 04:43:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 04:43:20,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:20,462 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1] [2025-03-08 04:43:20,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 04:43:20,663 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 [2025-03-08 04:43:20,663 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:20,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -692901003, now seen corresponding path program 2 times [2025-03-08 04:43:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:20,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939476525] [2025-03-08 04:43:20,665 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:20,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:20,675 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-08 04:43:20,681 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:43:20,681 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:20,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:20,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939476525] [2025-03-08 04:43:20,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939476525] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:20,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425928124] [2025-03-08 04:43:20,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:20,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:20,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:20,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:20,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 04:43:20,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-03-08 04:43:20,843 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 04:43:20,843 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:20,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:20,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 04:43:20,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:20,892 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 04:43:21,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425928124] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:21,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:21,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-03-08 04:43:21,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93941925] [2025-03-08 04:43:21,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:21,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-08 04:43:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:21,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-08 04:43:21,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:43:21,026 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:21,082 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2025-03-08 04:43:21,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 04:43:21,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-03-08 04:43:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:21,083 INFO L225 Difference]: With dead ends: 46 [2025-03-08 04:43:21,083 INFO L226 Difference]: Without dead ends: 38 [2025-03-08 04:43:21,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-03-08 04:43:21,084 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:21,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:21,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-08 04:43:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-03-08 04:43:21,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2025-03-08 04:43:21,090 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2025-03-08 04:43:21,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:21,090 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2025-03-08 04:43:21,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,090 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2025-03-08 04:43:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 04:43:21,091 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:21,091 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 2, 1, 1, 1, 1, 1] [2025-03-08 04:43:21,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:21,293 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 [2025-03-08 04:43:21,293 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:21,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:21,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1027296389, now seen corresponding path program 3 times [2025-03-08 04:43:21,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:21,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187938131] [2025-03-08 04:43:21,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:21,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:21,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 17 equivalence classes. [2025-03-08 04:43:21,305 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 15 of 37 statements. [2025-03-08 04:43:21,305 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:43:21,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-03-08 04:43:21,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187938131] [2025-03-08 04:43:21,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187938131] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422852464] [2025-03-08 04:43:21,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:21,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:21,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:21,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:21,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 04:43:21,360 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 17 equivalence classes. [2025-03-08 04:43:21,368 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 15 of 37 statements. [2025-03-08 04:43:21,368 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 04:43:21,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:21,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-08 04:43:21,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-03-08 04:43:21,381 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:21,410 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-03-08 04:43:21,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422852464] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:21,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:21,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-08 04:43:21,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688192953] [2025-03-08 04:43:21,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:21,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 04:43:21,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:21,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 04:43:21,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:43:21,413 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:21,443 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2025-03-08 04:43:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 04:43:21,444 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-03-08 04:43:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:21,445 INFO L225 Difference]: With dead ends: 49 [2025-03-08 04:43:21,445 INFO L226 Difference]: Without dead ends: 46 [2025-03-08 04:43:21,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-03-08 04:43:21,446 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:21,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:21,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-08 04:43:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-03-08 04:43:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2025-03-08 04:43:21,450 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 37 [2025-03-08 04:43:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:21,450 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2025-03-08 04:43:21,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2025-03-08 04:43:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-08 04:43:21,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:21,451 INFO L218 NwaCegarLoop]: trace histogram [20, 14, 6, 1, 1, 1, 1, 1] [2025-03-08 04:43:21,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:21,655 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 [2025-03-08 04:43:21,655 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:21,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1702109687, now seen corresponding path program 4 times [2025-03-08 04:43:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476142252] [2025-03-08 04:43:21,656 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:21,660 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:43:21,669 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:21,669 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:21,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476142252] [2025-03-08 04:43:21,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476142252] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936468999] [2025-03-08 04:43:21,884 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 04:43:21,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:21,885 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:21,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 04:43:21,906 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-08 04:43:21,917 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-08 04:43:21,917 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 04:43:21,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:21,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 04:43:21,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:21,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 165 proven. 210 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:22,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936468999] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:22,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:22,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-03-08 04:43:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446670625] [2025-03-08 04:43:22,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:22,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-03-08 04:43:22,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:22,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-03-08 04:43:22,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:43:22,360 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:22,443 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2025-03-08 04:43:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-08 04:43:22,444 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-03-08 04:43:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:22,445 INFO L225 Difference]: With dead ends: 94 [2025-03-08 04:43:22,445 INFO L226 Difference]: Without dead ends: 78 [2025-03-08 04:43:22,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-03-08 04:43:22,446 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:22,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-08 04:43:22,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2025-03-08 04:43:22,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 77 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:22,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2025-03-08 04:43:22,452 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 45 [2025-03-08 04:43:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:22,453 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2025-03-08 04:43:22,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.1515151515151514) internal successors, (71), 33 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2025-03-08 04:43:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 04:43:22,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:22,454 INFO L218 NwaCegarLoop]: trace histogram [36, 30, 6, 1, 1, 1, 1, 1] [2025-03-08 04:43:22,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 04:43:22,655 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 [2025-03-08 04:43:22,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:22,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:22,656 INFO L85 PathProgramCache]: Analyzing trace with hash 337354793, now seen corresponding path program 5 times [2025-03-08 04:43:22,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:22,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475232791] [2025-03-08 04:43:22,656 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:22,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:22,668 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 37 equivalence classes. [2025-03-08 04:43:22,686 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 04:43:22,686 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-03-08 04:43:22,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 390 proven. 36 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2025-03-08 04:43:22,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:22,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475232791] [2025-03-08 04:43:22,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475232791] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:22,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746658084] [2025-03-08 04:43:22,811 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 04:43:22,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:22,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:22,815 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:22,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 04:43:22,842 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 77 statements into 37 equivalence classes. [2025-03-08 04:43:22,868 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 04:43:22,868 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2025-03-08 04:43:22,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:22,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 04:43:22,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:23,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 341 proven. 930 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-08 04:43:24,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746658084] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:24,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:24,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 33, 33] total 59 [2025-03-08 04:43:24,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486219191] [2025-03-08 04:43:24,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:24,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-03-08 04:43:24,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:24,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-03-08 04:43:24,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2025-03-08 04:43:24,174 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 59 states, 59 states have (on average 2.135593220338983) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:24,328 INFO L93 Difference]: Finished difference Result 137 states and 172 transitions. [2025-03-08 04:43:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-03-08 04:43:24,328 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.135593220338983) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2025-03-08 04:43:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:24,330 INFO L225 Difference]: With dead ends: 137 [2025-03-08 04:43:24,330 INFO L226 Difference]: Without dead ends: 121 [2025-03-08 04:43:24,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 92 SyntacticMatches, 12 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2025-03-08 04:43:24,331 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:24,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 04:43:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-03-08 04:43:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2025-03-08 04:43:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0672268907563025) internal successors, (127), 119 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 127 transitions. [2025-03-08 04:43:24,348 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 127 transitions. Word has length 77 [2025-03-08 04:43:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:24,348 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 127 transitions. [2025-03-08 04:43:24,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.135593220338983) internal successors, (126), 59 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 127 transitions. [2025-03-08 04:43:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-08 04:43:24,350 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:24,350 INFO L218 NwaCegarLoop]: trace histogram [57, 50, 7, 1, 1, 1, 1, 1] [2025-03-08 04:43:24,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 04:43:24,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:24,551 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:24,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1799368046, now seen corresponding path program 6 times [2025-03-08 04:43:24,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:24,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871568633] [2025-03-08 04:43:24,552 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:24,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:24,559 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 119 statements into 58 equivalence classes. [2025-03-08 04:43:24,570 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 65 of 119 statements. [2025-03-08 04:43:24,571 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-08 04:43:24,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-03-08 04:43:24,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:24,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871568633] [2025-03-08 04:43:24,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871568633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:24,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985025597] [2025-03-08 04:43:24,662 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-08 04:43:24,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:24,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:24,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:24,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 04:43:24,690 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 119 statements into 58 equivalence classes. [2025-03-08 04:43:24,712 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 65 of 119 statements. [2025-03-08 04:43:24,713 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-03-08 04:43:24,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:24,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 04:43:24,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-03-08 04:43:24,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3249 backedges. 750 proven. 49 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2025-03-08 04:43:24,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985025597] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:24,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:24,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-03-08 04:43:24,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890953769] [2025-03-08 04:43:24,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:24,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 04:43:24,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:24,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 04:43:24,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2025-03-08 04:43:24,837 INFO L87 Difference]: Start difference. First operand 120 states and 127 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:24,878 INFO L93 Difference]: Finished difference Result 141 states and 165 transitions. [2025-03-08 04:43:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 04:43:24,878 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2025-03-08 04:43:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:24,879 INFO L225 Difference]: With dead ends: 141 [2025-03-08 04:43:24,879 INFO L226 Difference]: Without dead ends: 138 [2025-03-08 04:43:24,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2025-03-08 04:43:24,880 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:24,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 04:43:24,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-03-08 04:43:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2025-03-08 04:43:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.1240875912408759) internal successors, (154), 137 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 154 transitions. [2025-03-08 04:43:24,890 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 154 transitions. Word has length 119 [2025-03-08 04:43:24,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:24,891 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 154 transitions. [2025-03-08 04:43:24,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 18 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:24,891 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 154 transitions. [2025-03-08 04:43:24,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-08 04:43:24,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:24,895 INFO L218 NwaCegarLoop]: trace histogram [66, 50, 16, 1, 1, 1, 1, 1] [2025-03-08 04:43:24,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:25,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:25,096 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:25,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:25,096 INFO L85 PathProgramCache]: Analyzing trace with hash 252321051, now seen corresponding path program 7 times [2025-03-08 04:43:25,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:25,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563053038] [2025-03-08 04:43:25,096 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:25,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:25,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 04:43:25,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 04:43:25,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:25,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563053038] [2025-03-08 04:43:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563053038] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794438170] [2025-03-08 04:43:27,244 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-08 04:43:27,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:27,245 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:27,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 04:43:27,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-08 04:43:27,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-08 04:43:27,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 04:43:27,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:27,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-03-08 04:43:27,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:27,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:27,466 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 4356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:29,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794438170] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:29,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:29,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 103 [2025-03-08 04:43:29,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060486932] [2025-03-08 04:43:29,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:29,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2025-03-08 04:43:29,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:29,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2025-03-08 04:43:29,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2025-03-08 04:43:29,956 INFO L87 Difference]: Start difference. First operand 138 states and 154 transitions. Second operand has 103 states, 103 states have (on average 2.174757281553398) internal successors, (224), 103 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:30,461 INFO L93 Difference]: Finished difference Result 209 states and 292 transitions. [2025-03-08 04:43:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2025-03-08 04:43:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.174757281553398) internal successors, (224), 103 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2025-03-08 04:43:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:30,463 INFO L225 Difference]: With dead ends: 209 [2025-03-08 04:43:30,463 INFO L226 Difference]: Without dead ends: 206 [2025-03-08 04:43:30,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 206 SyntacticMatches, 34 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2025-03-08 04:43:30,465 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:30,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 04:43:30,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2025-03-08 04:43:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2025-03-08 04:43:30,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.248780487804878) internal successors, (256), 205 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 256 transitions. [2025-03-08 04:43:30,475 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 256 transitions. Word has length 137 [2025-03-08 04:43:30,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:30,475 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 256 transitions. [2025-03-08 04:43:30,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.174757281553398) internal successors, (224), 103 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:30,476 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 256 transitions. [2025-03-08 04:43:30,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-03-08 04:43:30,477 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:30,477 INFO L218 NwaCegarLoop]: trace histogram [100, 50, 50, 1, 1, 1, 1, 1] [2025-03-08 04:43:30,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 04:43:30,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-08 04:43:30,680 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:30,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:30,680 INFO L85 PathProgramCache]: Analyzing trace with hash 397918077, now seen corresponding path program 8 times [2025-03-08 04:43:30,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:30,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656921567] [2025-03-08 04:43:30,680 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:30,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:30,688 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 205 statements into 2 equivalence classes. [2025-03-08 04:43:30,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 205 of 205 statements. [2025-03-08 04:43:30,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:30,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:32,155 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2025-03-08 04:43:32,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656921567] [2025-03-08 04:43:32,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656921567] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:32,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396090404] [2025-03-08 04:43:32,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 04:43:32,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:32,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:32,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:32,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-08 04:43:32,187 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 205 statements into 2 equivalence classes. [2025-03-08 04:43:32,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 205 of 205 statements. [2025-03-08 04:43:32,228 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 04:43:32,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:32,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 105 conjuncts are in the unsatisfiable core [2025-03-08 04:43:32,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:32,471 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2025-03-08 04:43:32,471 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 04:43:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10000 backedges. 0 proven. 7450 refuted. 0 times theorem prover too weak. 2550 trivial. 0 not checked. [2025-03-08 04:43:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396090404] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 04:43:32,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 04:43:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 55 [2025-03-08 04:43:32,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575685035] [2025-03-08 04:43:32,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 04:43:32,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-03-08 04:43:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:32,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-03-08 04:43:32,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2025-03-08 04:43:32,735 INFO L87 Difference]: Start difference. First operand 206 states and 256 transitions. Second operand has 55 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:33,660 INFO L93 Difference]: Finished difference Result 2860 states and 4235 transitions. [2025-03-08 04:43:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-03-08 04:43:33,660 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2025-03-08 04:43:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:33,671 INFO L225 Difference]: With dead ends: 2860 [2025-03-08 04:43:33,671 INFO L226 Difference]: Without dead ends: 2857 [2025-03-08 04:43:33,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=2862, Unknown=0, NotChecked=0, Total=2970 [2025-03-08 04:43:33,674 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 51 mSDsluCounter, 5463 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:33,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5569 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 04:43:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2025-03-08 04:43:33,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 208. [2025-03-08 04:43:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.251207729468599) internal successors, (259), 207 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 259 transitions. [2025-03-08 04:43:33,716 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 259 transitions. Word has length 205 [2025-03-08 04:43:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:33,716 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 259 transitions. [2025-03-08 04:43:33,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.9636363636363636) internal successors, (108), 55 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 259 transitions. [2025-03-08 04:43:33,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2025-03-08 04:43:33,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 04:43:33,718 INFO L218 NwaCegarLoop]: trace histogram [101, 51, 50, 1, 1, 1, 1, 1] [2025-03-08 04:43:33,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-08 04:43:33,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-08 04:43:33,922 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 04:43:33,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 04:43:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 150075454, now seen corresponding path program 9 times [2025-03-08 04:43:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 04:43:33,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433201078] [2025-03-08 04:43:33,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 04:43:33,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 207 statements into 102 equivalence classes. [2025-03-08 04:43:33,991 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) and asserted 207 of 207 statements. [2025-03-08 04:43:33,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2025-03-08 04:43:33,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 10002 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 04:43:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433201078] [2025-03-08 04:43:37,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433201078] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 04:43:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631363284] [2025-03-08 04:43:37,835 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 04:43:37,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 04:43:37,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 04:43:37,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 04:43:37,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-08 04:43:37,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 207 statements into 102 equivalence classes. [2025-03-08 04:43:37,963 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) and asserted 207 of 207 statements. [2025-03-08 04:43:37,963 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 102 check-sat command(s) [2025-03-08 04:43:37,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 04:43:37,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 102 conjuncts are in the unsatisfiable core [2025-03-08 04:43:37,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 04:43:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10201 backedges. 10201 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 04:43:38,207 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 04:43:38,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631363284] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 04:43:38,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 04:43:38,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [103] total 104 [2025-03-08 04:43:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473493800] [2025-03-08 04:43:38,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 04:43:38,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2025-03-08 04:43:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 04:43:38,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2025-03-08 04:43:38,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5256, Invalid=5456, Unknown=0, NotChecked=0, Total=10712 [2025-03-08 04:43:38,212 INFO L87 Difference]: Start difference. First operand 208 states and 259 transitions. Second operand has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 103 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 04:43:38,750 INFO L93 Difference]: Finished difference Result 309 states and 410 transitions. [2025-03-08 04:43:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-03-08 04:43:38,750 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 103 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2025-03-08 04:43:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 04:43:38,751 INFO L225 Difference]: With dead ends: 309 [2025-03-08 04:43:38,751 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 04:43:38,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5256, Invalid=5456, Unknown=0, NotChecked=0, Total=10712 [2025-03-08 04:43:38,754 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 04:43:38,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 04:43:38,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 04:43:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 04:43:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 04:43:38,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2025-03-08 04:43:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 04:43:38,755 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 04:43:38,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.0097087378640777) internal successors, (207), 103 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 04:43:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 04:43:38,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 04:43:38,757 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 04:43:38,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-08 04:43:38,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 04:43:38,963 INFO L422 BasicCegarLoop]: Path program histogram: [9, 1, 1] [2025-03-08 04:43:38,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 04:43:40,579 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 04:43:40,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 04:43:40 BoogieIcfgContainer [2025-03-08 04:43:40,602 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 04:43:40,603 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 04:43:40,603 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 04:43:40,603 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 04:43:40,603 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 04:43:19" (3/4) ... [2025-03-08 04:43:40,605 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 04:43:40,611 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-08 04:43:40,611 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-08 04:43:40,611 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 04:43:40,611 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 04:43:40,663 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 04:43:40,663 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 04:43:40,663 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 04:43:40,664 INFO L158 Benchmark]: Toolchain (without parser) took 21517.68ms. Allocated memory was 167.8MB in the beginning and 562.0MB in the end (delta: 394.3MB). Free memory was 123.8MB in the beginning and 330.5MB in the end (delta: -206.8MB). Peak memory consumption was 186.8MB. Max. memory is 16.1GB. [2025-03-08 04:43:40,664 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 04:43:40,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.21ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 111.8MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 04:43:40,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.66ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 110.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 04:43:40,664 INFO L158 Benchmark]: Boogie Preprocessor took 22.98ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 110.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 04:43:40,665 INFO L158 Benchmark]: IcfgBuilder took 179.76ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 99.8MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 04:43:40,665 INFO L158 Benchmark]: TraceAbstraction took 21064.47ms. Allocated memory was 167.8MB in the beginning and 562.0MB in the end (delta: 394.3MB). Free memory was 99.8MB in the beginning and 338.7MB in the end (delta: -239.0MB). Peak memory consumption was 296.9MB. Max. memory is 16.1GB. [2025-03-08 04:43:40,665 INFO L158 Benchmark]: Witness Printer took 60.77ms. Allocated memory is still 562.0MB. Free memory was 338.7MB in the beginning and 330.5MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 04:43:40,666 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.21ms. Allocated memory is still 167.8MB. Free memory was 122.6MB in the beginning and 111.8MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.66ms. Allocated memory is still 167.8MB. Free memory was 111.8MB in the beginning and 110.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.98ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 110.6MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 179.76ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 99.8MB in the end (delta: 10.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 21064.47ms. Allocated memory was 167.8MB in the beginning and 562.0MB in the end (delta: 394.3MB). Free memory was 99.8MB in the beginning and 338.7MB in the end (delta: -239.0MB). Peak memory consumption was 296.9MB. Max. memory is 16.1GB. * Witness Printer took 60.77ms. Allocated memory is still 562.0MB. Free memory was 338.7MB in the beginning and 330.5MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 13 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.4s, OverallIterations: 11, TraceHistogramMax: 101, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 5757 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5596 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4441 IncrementalHoareTripleChecker+Invalid, 4691 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 161 mSDtfsCounter, 4441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1798 GetRequests, 1357 SyntacticMatches, 47 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3275 ImplicationChecksByTransitivity, 9.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208occurred in iteration=10, InterpolantAutomatonStates: 409, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 2650 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 1741 NumberOfCodeBlocks, 1589 NumberOfCodeBlocksAsserted, 371 NumberOfCheckSat, 2372 ConstructedInterpolants, 0 QuantifiedInterpolants, 5901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2058 ConjunctsInSsa, 353 ConjunctsInUnsatCore, 30 InterpolantComputations, 2 PerfectInterpolantSequences, 40867/79316 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Location Invariant Derived location invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((22 == x) && (y == 50)) || ((x == 48) && (y == 50))) || ((x == 36) && (y == 50))) || ((x == 38) && (y == 50))) || ((87 == x) && (87 == y))) || ((y == 55) && (x == 55))) || ((3 == x) && (y == 50))) || ((x == 54) && (y == 54))) || ((y == 90) && (x == 90))) || ((100 <= x) && (y == 100))) || ((67 == x) && (67 == y))) || ((84 == x) && (84 == y))) || ((y == 80) && (x == 80))) || ((5 == x) && (y == 50))) || ((y == 50) && (x == 33))) || ((77 == y) && (77 == x))) || ((81 == x) && (81 == y))) || ((y == 50) && (42 == x))) || ((y == 50) && (x == 37))) || ((y == 85) && (x == 85))) || ((y == 58) && (x == 58))) || ((x == 34) && (y == 50))) || ((69 == x) && (69 == y))) || ((y == 50) && (x == 10))) || ((x == 1) && (y == 50))) || ((x == 11) && (y == 50))) || ((59 == y) && (59 == x))) || ((51 == x) && (51 == y))) || ((71 == y) && (71 == x))) || ((y == 50) && (29 == x))) || ((2 == x) && (y == 50))) || ((y == 50) && (x == 27))) || ((x == 26) && (y == 50))) || ((y == 50) && (x == 0))) || ((y == 50) && (x == 25))) || ((56 == y) && (56 == x))) || ((y == 50) && (x == 12))) || ((y == 50) && (x == 39))) || ((y == 50) && (x == 20))) || ((y == 50) && (30 == x))) || ((57 == y) && (57 == x))) || ((9 == x) && (y == 50))) || ((x == 63) && (y == 63))) || ((x == 15) && (y == 50))) || ((x == 83) && (y == 83))) || ((72 == y) && (72 == x))) || ((66 == y) && (66 == x))) || ((41 == x) && (y == 50))) || ((y == 50) && (6 == x))) || ((62 == y) && (62 == x))) || ((x == 73) && (y == 73))) || ((32 == x) && (y == 50))) || ((x == 79) && (y == 79))) || ((x == 24) && (y == 50))) || ((52 == x) && (52 == y))) || ((y == 50) && (47 == x))) || ((x == 8) && (y == 50))) || ((98 == x) && (98 == y))) || ((88 == y) && (88 == x))) || ((y == 50) && (35 == x))) || ((x == 65) && (y == 65))) || ((21 == x) && (y == 50))) || ((89 == x) && (89 == y))) || ((x == 60) && (y == 60))) || ((x == 43) && (y == 50))) || ((76 == x) && (76 == y))) || ((95 == y) && (95 == x))) || ((y == 50) && (14 == x))) || ((y == 50) && (x == 28))) || ((40 == x) && (y == 50))) || ((94 == y) && (94 == x))) || ((x == 70) && (y == 70))) || ((7 == x) && (y == 50))) || ((31 == x) && (y == 50))) || ((y == 50) && (x == 45))) || ((y == 50) && (x == 17))) || ((53 == x) && (53 == y))) || ((x == 78) && (y == 78))) || ((y == 74) && (x == 74))) || ((y == 50) && (49 == x))) || ((x == 86) && (y == 86))) || ((68 == y) && (68 == x))) || ((x == 13) && (y == 50))) || ((23 == x) && (y == 50))) || ((y == 50) && (44 == x))) || ((y == 75) && (x == 75))) || ((x == 99) && (y == 99))) || ((y == 61) && (x == 61))) || ((y == 50) && (x == 50))) || ((46 == x) && (y == 50))) || ((97 == y) && (97 == x))) || ((y == 50) && (x == 18))) || ((92 == x) && (92 == y))) || ((y == 50) && (x == 4))) || ((x == 96) && (y == 96))) || ((x == 93) && (y == 93))) || ((64 == x) && (64 == y))) || ((16 == x) && (y == 50))) || ((82 == y) && (82 == x))) || ((91 == x) && (91 == y))) || ((y == 50) && (19 == x))) RESULT: Ultimate proved your program to be correct! [2025-03-08 04:43:40,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE