./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d97e16340b134520fbcd52e88b56205e8eec0d97e940a97449195072afa1eb85 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 13:45:29,629 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:45:29,673 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:45:29,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:45:29,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:45:29,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:45:29,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:45:29,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:45:29,698 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:45:29,699 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:45:29,699 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:45:29,699 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:45:29,699 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:45:29,699 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:45:29,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:45:29,700 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:45:29,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:45:29,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:45:29,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:45:29,701 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 -> d97e16340b134520fbcd52e88b56205e8eec0d97e940a97449195072afa1eb85 [2025-03-03 13:45:29,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:45:29,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:45:29,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:45:29,923 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:45:29,924 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:45:29,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2025-03-03 13:45:31,089 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53127d48d/d3254b1bc0f54395ae3ff95d8168afb7/FLAG90026cd9d [2025-03-03 13:45:31,296 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:45:31,297 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c [2025-03-03 13:45:31,304 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53127d48d/d3254b1bc0f54395ae3ff95d8168afb7/FLAG90026cd9d [2025-03-03 13:45:31,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53127d48d/d3254b1bc0f54395ae3ff95d8168afb7 [2025-03-03 13:45:31,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:45:31,353 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:45:31,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:45:31,355 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:45:31,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:45:31,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a707027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31, skipping insertion in model container [2025-03-03 13:45:31,360 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,371 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:45:31,469 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c[576,589] [2025-03-03 13:45:31,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:45:31,489 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:45:31,496 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound50.c[576,589] [2025-03-03 13:45:31,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:45:31,512 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:45:31,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31 WrapperNode [2025-03-03 13:45:31,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:45:31,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:45:31,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:45:31,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:45:31,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,535 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2025-03-03 13:45:31,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:45:31,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:45:31,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:45:31,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:45:31,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,552 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 13:45:31,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,555 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,557 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,558 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:45:31,558 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:45:31,558 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:45:31,558 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:45:31,561 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (1/1) ... [2025-03-03 13:45:31,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:45:31,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:31,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 13:45:31,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 13:45:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:45:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 13:45:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 13:45:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:45:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:45:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:45:31,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 13:45:31,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 13:45:31,634 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:45:31,636 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:45:31,768 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-03 13:45:31,768 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:45:31,775 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:45:31,776 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:45:31,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:45:31 BoogieIcfgContainer [2025-03-03 13:45:31,776 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:45:31,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:45:31,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:45:31,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:45:31,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:45:31" (1/3) ... [2025-03-03 13:45:31,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77514eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:45:31, skipping insertion in model container [2025-03-03 13:45:31,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:45:31" (2/3) ... [2025-03-03 13:45:31,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77514eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:45:31, skipping insertion in model container [2025-03-03 13:45:31,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:45:31" (3/3) ... [2025-03-03 13:45:31,785 INFO L128 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound50.c [2025-03-03 13:45:31,796 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:45:31,797 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohendiv-ll_valuebound50.c that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-03 13:45:31,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:45:31,841 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;@6f830fcd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:45:31,842 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:45:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 13:45:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-03 13:45:31,851 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:31,852 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:31,852 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:31,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1575628414, now seen corresponding path program 1 times [2025-03-03 13:45:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545488236] [2025-03-03 13:45:31,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:31,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-03 13:45:31,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 13:45:31,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:31,927 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 13:45:31,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:31,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545488236] [2025-03-03 13:45:31,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545488236] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:45:31,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336672729] [2025-03-03 13:45:31,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:31,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:31,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:31,971 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:31,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 13:45:32,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-03 13:45:32,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 13:45:32,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:32,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:32,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 13:45:32,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:32,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 13:45:32,029 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:45:32,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336672729] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:45:32,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:45:32,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 13:45:32,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072480886] [2025-03-03 13:45:32,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:45:32,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 13:45:32,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:32,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 13:45:32,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:45:32,049 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 13:45:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:32,065 INFO L93 Difference]: Finished difference Result 61 states and 96 transitions. [2025-03-03 13:45:32,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 13:45:32,068 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2025-03-03 13:45:32,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:32,073 INFO L225 Difference]: With dead ends: 61 [2025-03-03 13:45:32,073 INFO L226 Difference]: Without dead ends: 28 [2025-03-03 13:45:32,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:45:32,078 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:32,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:45:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-03-03 13:45:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-03-03 13:45:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 13:45:32,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2025-03-03 13:45:32,112 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 23 [2025-03-03 13:45:32,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:32,113 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2025-03-03 13:45:32,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-03-03 13:45:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2025-03-03 13:45:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-03 13:45:32,114 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:32,114 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:32,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 13:45:32,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 13:45:32,315 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:32,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash -970692957, now seen corresponding path program 1 times [2025-03-03 13:45:32,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:32,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619723299] [2025-03-03 13:45:32,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:32,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-03 13:45:32,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 13:45:32,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:32,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:45:32,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105672851] [2025-03-03 13:45:32,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:32,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:32,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:32,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 13:45:32,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-03 13:45:32,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-03 13:45:32,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:32,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:32,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 13:45:32,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 13:45:32,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:45:32,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619723299] [2025-03-03 13:45:32,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:45:32,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105672851] [2025-03-03 13:45:32,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105672851] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:45:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:45:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:45:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518402786] [2025-03-03 13:45:32,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:45:32,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:45:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:32,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:45:32,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:45:32,470 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-03 13:45:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:32,525 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2025-03-03 13:45:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:45:32,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2025-03-03 13:45:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:32,526 INFO L225 Difference]: With dead ends: 38 [2025-03-03 13:45:32,526 INFO L226 Difference]: Without dead ends: 36 [2025-03-03 13:45:32,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:45:32,527 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:32,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:45:32,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-03 13:45:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2025-03-03 13:45:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 13:45:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2025-03-03 13:45:32,534 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23 [2025-03-03 13:45:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:32,534 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2025-03-03 13:45:32,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-03-03 13:45:32,534 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2025-03-03 13:45:32,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 13:45:32,535 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:32,535 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:32,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 13:45:32,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-03 13:45:32,737 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:32,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -747638560, now seen corresponding path program 1 times [2025-03-03 13:45:32,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:32,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122806823] [2025-03-03 13:45:32,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:32,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:32,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:45:32,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:45:32,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:32,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:45:32,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424736885] [2025-03-03 13:45:32,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:32,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:32,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:32,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:32,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 13:45:32,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:45:32,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:45:32,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:32,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:32,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 13:45:32,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-03 13:45:32,837 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:45:32,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:32,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122806823] [2025-03-03 13:45:32,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:45:32,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424736885] [2025-03-03 13:45:32,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424736885] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:45:32,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:45:32,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:45:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174885669] [2025-03-03 13:45:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:45:32,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:45:32,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:32,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:45:32,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:45:32,838 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:45:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:32,889 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2025-03-03 13:45:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:45:32,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-03-03 13:45:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:32,891 INFO L225 Difference]: With dead ends: 49 [2025-03-03 13:45:32,891 INFO L226 Difference]: Without dead ends: 46 [2025-03-03 13:45:32,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:45:32,891 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:32,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 112 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:45:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-03 13:45:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2025-03-03 13:45:32,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-03 13:45:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2025-03-03 13:45:32,903 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 28 [2025-03-03 13:45:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:32,904 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2025-03-03 13:45:32,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:45:32,904 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2025-03-03 13:45:32,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-03 13:45:32,905 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:32,905 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:32,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 13:45:33,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:33,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:33,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash -180468297, now seen corresponding path program 1 times [2025-03-03 13:45:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:33,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384974312] [2025-03-03 13:45:33,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:33,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:33,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-03 13:45:33,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-03 13:45:33,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:33,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:45:33,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838075902] [2025-03-03 13:45:33,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:33,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:33,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:33,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:33,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 13:45:33,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-03 13:45:33,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-03 13:45:33,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:33,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:33,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:45:33,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-03-03 13:45:33,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:45:33,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:33,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384974312] [2025-03-03 13:45:33,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:45:33,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838075902] [2025-03-03 13:45:33,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838075902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:45:33,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:45:33,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:45:33,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915150851] [2025-03-03 13:45:33,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:45:33,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:45:33,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:33,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:45:33,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:45:33,203 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-03 13:45:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:33,267 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2025-03-03 13:45:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:45:33,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2025-03-03 13:45:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:33,268 INFO L225 Difference]: With dead ends: 68 [2025-03-03 13:45:33,268 INFO L226 Difference]: Without dead ends: 66 [2025-03-03 13:45:33,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:45:33,269 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:33,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:45:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-03-03 13:45:33,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2025-03-03 13:45:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-03 13:45:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2025-03-03 13:45:33,284 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 34 [2025-03-03 13:45:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:33,285 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2025-03-03 13:45:33,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-03-03 13:45:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2025-03-03 13:45:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-03 13:45:33,285 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:33,285 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:33,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 13:45:33,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:33,486 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:33,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:33,487 INFO L85 PathProgramCache]: Analyzing trace with hash -591359209, now seen corresponding path program 1 times [2025-03-03 13:45:33,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:33,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945845702] [2025-03-03 13:45:33,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:33,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:33,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 13:45:33,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 13:45:33,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:33,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 13:45:33,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945845702] [2025-03-03 13:45:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945845702] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:45:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092681612] [2025-03-03 13:45:33,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:33,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:33,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:33,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 13:45:33,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 13:45:33,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 13:45:33,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:33,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:33,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:45:33,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 13:45:33,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:45:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-03-03 13:45:33,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092681612] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:45:33,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:45:33,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2025-03-03 13:45:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688888859] [2025-03-03 13:45:33,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:45:33,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 13:45:33,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:33,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 13:45:33,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:45:33,953 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-03 13:45:34,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:34,047 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2025-03-03 13:45:34,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:45:34,047 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 44 [2025-03-03 13:45:34,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:34,050 INFO L225 Difference]: With dead ends: 67 [2025-03-03 13:45:34,050 INFO L226 Difference]: Without dead ends: 65 [2025-03-03 13:45:34,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-03-03 13:45:34,053 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:34,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 207 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:45:34,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-03-03 13:45:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2025-03-03 13:45:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-03 13:45:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2025-03-03 13:45:34,063 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 44 [2025-03-03 13:45:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:34,063 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2025-03-03 13:45:34,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-03 13:45:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2025-03-03 13:45:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-03 13:45:34,064 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:34,064 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:34,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 13:45:34,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:34,264 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:34,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash -959211342, now seen corresponding path program 1 times [2025-03-03 13:45:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031014470] [2025-03-03 13:45:34,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:34,269 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-03 13:45:34,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:45:34,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:34,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-03 13:45:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031014470] [2025-03-03 13:45:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031014470] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:45:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546943548] [2025-03-03 13:45:34,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:34,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:34,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:34,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:34,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 13:45:34,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-03 13:45:34,493 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:45:34,494 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:34,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:34,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 13:45:34,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-03-03 13:45:34,568 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:45:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546943548] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:45:34,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:45:34,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 13:45:34,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751651785] [2025-03-03 13:45:34,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:45:34,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 13:45:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:34,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 13:45:34,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:45:34,571 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 13:45:34,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:34,656 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2025-03-03 13:45:34,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 13:45:34,657 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2025-03-03 13:45:34,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:34,659 INFO L225 Difference]: With dead ends: 76 [2025-03-03 13:45:34,659 INFO L226 Difference]: Without dead ends: 74 [2025-03-03 13:45:34,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:45:34,660 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:34,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 153 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:45:34,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-03 13:45:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2025-03-03 13:45:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 40 states have internal predecessors, (42), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-03 13:45:34,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2025-03-03 13:45:34,670 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 50 [2025-03-03 13:45:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:34,670 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2025-03-03 13:45:34,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-03-03 13:45:34,671 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2025-03-03 13:45:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-03-03 13:45:34,671 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:34,671 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:34,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 13:45:34,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:34,876 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:34,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:34,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1072917828, now seen corresponding path program 1 times [2025-03-03 13:45:34,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054419301] [2025-03-03 13:45:34,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:34,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:34,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-03 13:45:34,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-03 13:45:34,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:34,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:45:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758513469] [2025-03-03 13:45:34,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:34,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:34,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:34,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:34,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 13:45:34,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-03 13:45:34,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-03 13:45:34,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:34,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:34,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-03 13:45:34,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-03-03 13:45:35,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:45:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-03-03 13:45:35,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:35,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054419301] [2025-03-03 13:45:35,337 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:45:35,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758513469] [2025-03-03 13:45:35,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758513469] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-03 13:45:35,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:45:35,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-03-03 13:45:35,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150618307] [2025-03-03 13:45:35,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:45:35,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 13:45:35,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:35,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 13:45:35,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-03-03 13:45:35,339 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-03 13:45:35,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:35,460 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2025-03-03 13:45:35,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:45:35,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2025-03-03 13:45:35,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:35,462 INFO L225 Difference]: With dead ends: 75 [2025-03-03 13:45:35,462 INFO L226 Difference]: Without dead ends: 72 [2025-03-03 13:45:35,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-03-03 13:45:35,463 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:35,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 108 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:45:35,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-03 13:45:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-03-03 13:45:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-03 13:45:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2025-03-03 13:45:35,477 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 56 [2025-03-03 13:45:35,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:35,477 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2025-03-03 13:45:35,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-03-03 13:45:35,477 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2025-03-03 13:45:35,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-03 13:45:35,478 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:35,478 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:35,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-03 13:45:35,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:35,682 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:35,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:35,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1389967493, now seen corresponding path program 2 times [2025-03-03 13:45:35,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835099571] [2025-03-03 13:45:35,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:45:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:35,687 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-03-03 13:45:35,692 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 13:45:35,692 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:45:35,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2025-03-03 13:45:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835099571] [2025-03-03 13:45:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835099571] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:45:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308798408] [2025-03-03 13:45:35,853 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:45:35,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:35,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:35,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:35,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 13:45:35,876 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-03-03 13:45:35,891 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 13:45:35,891 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:45:35,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:35,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 13:45:35,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-03-03 13:45:35,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:45:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308798408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:45:35,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:45:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2025-03-03 13:45:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972155052] [2025-03-03 13:45:35,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:45:35,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:45:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:35,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:45:35,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:45:35,936 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 13:45:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:35,995 INFO L93 Difference]: Finished difference Result 111 states and 141 transitions. [2025-03-03 13:45:35,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:45:35,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 72 [2025-03-03 13:45:35,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:35,997 INFO L225 Difference]: With dead ends: 111 [2025-03-03 13:45:35,997 INFO L226 Difference]: Without dead ends: 72 [2025-03-03 13:45:35,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-03-03 13:45:35,997 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:35,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:45:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-03-03 13:45:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2025-03-03 13:45:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-03 13:45:36,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2025-03-03 13:45:36,028 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 72 [2025-03-03 13:45:36,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:36,028 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2025-03-03 13:45:36,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 13:45:36,028 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2025-03-03 13:45:36,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-03-03 13:45:36,032 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:36,032 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:36,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 13:45:36,232 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,SelfDestructingSolverStorable7 [2025-03-03 13:45:36,233 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:36,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash 920606081, now seen corresponding path program 1 times [2025-03-03 13:45:36,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:36,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971488786] [2025-03-03 13:45:36,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:36,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:36,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-03 13:45:36,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 13:45:36,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:36,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-03-03 13:45:36,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971488786] [2025-03-03 13:45:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971488786] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:45:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161502704] [2025-03-03 13:45:36,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:36,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:36,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:36,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:36,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 13:45:36,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-03 13:45:36,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-03 13:45:36,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:36,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:36,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:45:36,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-03-03 13:45:36,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:45:36,480 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-03-03 13:45:36,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161502704] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:45:36,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:45:36,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-03-03 13:45:36,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799895430] [2025-03-03 13:45:36,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:45:36,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 13:45:36,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:36,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 13:45:36,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:45:36,481 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 13:45:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:36,556 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2025-03-03 13:45:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:45:36,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 72 [2025-03-03 13:45:36,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:36,557 INFO L225 Difference]: With dead ends: 80 [2025-03-03 13:45:36,557 INFO L226 Difference]: Without dead ends: 78 [2025-03-03 13:45:36,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:45:36,558 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:36,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 126 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:45:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-03 13:45:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2025-03-03 13:45:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-03 13:45:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2025-03-03 13:45:36,570 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 72 [2025-03-03 13:45:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:36,570 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2025-03-03 13:45:36,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-03-03 13:45:36,570 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2025-03-03 13:45:36,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-03 13:45:36,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:45:36,571 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:36,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-03 13:45:36,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:36,771 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:45:36,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:45:36,771 INFO L85 PathProgramCache]: Analyzing trace with hash 496529162, now seen corresponding path program 1 times [2025-03-03 13:45:36,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:45:36,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453992658] [2025-03-03 13:45:36,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:36,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:45:36,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 13:45:36,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 13:45:36,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:36,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:36,917 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-03-03 13:45:36,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:45:36,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453992658] [2025-03-03 13:45:36,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453992658] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:45:36,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438143581] [2025-03-03 13:45:36,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:45:36,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:45:36,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:45:36,920 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:45:36,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 13:45:36,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-03 13:45:36,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-03 13:45:36,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:45:36,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:45:36,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 13:45:36,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:45:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-03-03 13:45:37,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:45:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-03-03 13:45:37,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438143581] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:45:37,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:45:37,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2025-03-03 13:45:37,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279957832] [2025-03-03 13:45:37,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:45:37,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-03 13:45:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:45:37,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-03 13:45:37,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-03-03 13:45:37,281 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-03-03 13:45:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:45:37,805 INFO L93 Difference]: Finished difference Result 135 states and 174 transitions. [2025-03-03 13:45:37,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-03 13:45:37,805 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 94 [2025-03-03 13:45:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:45:37,806 INFO L225 Difference]: With dead ends: 135 [2025-03-03 13:45:37,806 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 13:45:37,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2025-03-03 13:45:37,807 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 44 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:45:37,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 392 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:45:37,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 13:45:37,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 13:45:37,808 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) [2025-03-03 13:45:37,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 13:45:37,808 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2025-03-03 13:45:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:45:37,808 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 13:45:37,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-03-03 13:45:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 13:45:37,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 13:45:37,810 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 13:45:37,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-03 13:45:38,011 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,SelfDestructingSolverStorable9 [2025-03-03 13:45:38,014 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:45:38,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 13:45:38,844 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 13:45:38,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 01:45:38 BoogieIcfgContainer [2025-03-03 13:45:38,862 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 13:45:38,862 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 13:45:38,862 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 13:45:38,862 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 13:45:38,863 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:45:31" (3/4) ... [2025-03-03 13:45:38,864 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 13:45:38,870 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-03 13:45:38,870 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-03 13:45:38,874 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-03 13:45:38,874 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 13:45:38,874 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-03 13:45:38,874 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 13:45:38,939 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 13:45:38,940 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 13:45:38,940 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 13:45:38,941 INFO L158 Benchmark]: Toolchain (without parser) took 7587.80ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 123.9MB in the beginning and 266.0MB in the end (delta: -142.1MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2025-03-03 13:45:38,941 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:45:38,941 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.25ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 112.3MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:45:38,942 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.21ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 111.5MB in the end (delta: 811.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:45:38,942 INFO L158 Benchmark]: Boogie Preprocessor took 20.88ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 110.7MB in the end (delta: 815.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:45:38,942 INFO L158 Benchmark]: IcfgBuilder took 218.02ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 98.9MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 13:45:38,943 INFO L158 Benchmark]: TraceAbstraction took 7083.01ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 98.1MB in the beginning and 270.8MB in the end (delta: -172.7MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2025-03-03 13:45:38,943 INFO L158 Benchmark]: Witness Printer took 77.77ms. Allocated memory is still 360.7MB. Free memory was 270.8MB in the beginning and 266.0MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:45:38,944 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 158.25ms. Allocated memory is still 167.8MB. Free memory was 123.9MB in the beginning and 112.3MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.21ms. Allocated memory is still 167.8MB. Free memory was 112.3MB in the beginning and 111.5MB in the end (delta: 811.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.88ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 110.7MB in the end (delta: 815.0kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 218.02ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 98.9MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7083.01ms. Allocated memory was 167.8MB in the beginning and 360.7MB in the end (delta: 192.9MB). Free memory was 98.1MB in the beginning and 270.8MB in the end (delta: -172.7MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Witness Printer took 77.77ms. Allocated memory is still 360.7MB. Free memory was 270.8MB in the beginning and 266.0MB in the end (delta: 4.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 1473 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1134 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 712 IncrementalHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 339 mSDtfsCounter, 712 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 709 SyntacticMatches, 10 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=7, InterpolantAutomatonStates: 70, 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, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 992 NumberOfCodeBlocks, 992 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1097 ConstructedInterpolants, 0 QuantifiedInterpolants, 2203 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1203 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 2394/2484 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: 47]: Location Invariant Derived location invariant: ((((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (x <= 50)) && (b <= ((__int128) r + y))) && (0 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) || (((((((((__int128) a * y) + r) == ((__int128) b + x)) && (x <= 50)) && (0 <= r)) && (r == x)) && (q == 0)) && (b < ((long long) y + 1)))) - InvariantResult [Line: 38]: Location Invariant Derived location invariant: ((((((((((__int128) r + 1) <= y) && (0 <= x)) && (b == y)) && (x <= 50)) && (a == 1)) && ((((__int128) r + y) + ((__int128) q * y)) == ((__int128) b + x))) || ((((((b == 0) && (x <= 50)) && (0 <= r)) && (r == x)) && (q == 0)) && (a == 0))) || ((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (x <= 50)) && (0 <= ((__int128) r + y))) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y))))) RESULT: Ultimate proved your program to be correct! [2025-03-03 13:45:38,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE