./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.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/egcd2-ll_valuebound1.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 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 13:50:50,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:50:50,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:50:50,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:50:50,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:50:50,711 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:50:50,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:50:50,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:50:50,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:50:50,712 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:50:50,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:50:50,712 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:50:50,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:50:50,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:50:50,712 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:50:50,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:50:50,713 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:50:50,714 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:50:50,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:50:50,714 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:50:50,715 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:50:50,715 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:50:50,715 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:50:50,715 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:50:50,715 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:50:50,715 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 -> 9439004819e2e34c2ab2e87057bca89732394fc53eb02ecb90192bb8fac7667a [2025-03-03 13:50:50,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:50:50,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:50:50,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:50:50,951 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:50:50,951 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:50:50,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2025-03-03 13:50:52,085 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbacfd8a/bcb6775db3214686a5de6ac1511a4ebc/FLAGfb33bde6f [2025-03-03 13:50:52,286 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:50:52,286 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound1.c [2025-03-03 13:50:52,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbacfd8a/bcb6775db3214686a5de6ac1511a4ebc/FLAGfb33bde6f [2025-03-03 13:50:52,649 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dbacfd8a/bcb6775db3214686a5de6ac1511a4ebc [2025-03-03 13:50:52,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:50:52,651 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:50:52,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:50:52,652 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:50:52,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:50:52,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f46f020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52, skipping insertion in model container [2025-03-03 13:50:52,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,667 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:50:52,760 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/egcd2-ll_valuebound1.c[490,503] [2025-03-03 13:50:52,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:50:52,786 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:50:52,793 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/egcd2-ll_valuebound1.c[490,503] [2025-03-03 13:50:52,800 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:50:52,808 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:50:52,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52 WrapperNode [2025-03-03 13:50:52,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:50:52,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:50:52,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:50:52,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:50:52,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,830 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2025-03-03 13:50:52,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:50:52,831 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:50:52,831 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:50:52,831 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:50:52,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,850 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 13:50:52,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,852 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:50:52,861 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:50:52,861 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:50:52,861 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:50:52,861 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (1/1) ... [2025-03-03 13:50:52,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:50:52,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:52,883 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 13:50:52,885 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 13:50:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:50:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 13:50:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 13:50:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:50:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:50:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:50:52,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 13:50:52,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 13:50:52,952 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:50:52,954 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:50:53,061 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-03 13:50:53,061 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:50:53,071 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:50:53,071 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:50:53,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:53 BoogieIcfgContainer [2025-03-03 13:50:53,074 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:50:53,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:50:53,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:50:53,079 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:50:53,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:50:52" (1/3) ... [2025-03-03 13:50:53,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4438c185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:50:53, skipping insertion in model container [2025-03-03 13:50:53,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:52" (2/3) ... [2025-03-03 13:50:53,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4438c185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:50:53, skipping insertion in model container [2025-03-03 13:50:53,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:53" (3/3) ... [2025-03-03 13:50:53,082 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2025-03-03 13:50:53,092 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:50:53,093 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd2-ll_valuebound1.c that has 3 procedures, 33 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-03 13:50:53,139 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:50:53,151 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;@9b73ceb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:50:53,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:50:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-03 13:50:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-03 13:50:53,160 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:53,160 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:53,161 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:53,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:53,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1369079279, now seen corresponding path program 1 times [2025-03-03 13:50:53,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:53,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101035932] [2025-03-03 13:50:53,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:53,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:53,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 13:50:53,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 13:50:53,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:53,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-03 13:50:53,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:53,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101035932] [2025-03-03 13:50:53,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101035932] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114403097] [2025-03-03 13:50:53,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:53,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:53,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:53,536 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 13:50:53,537 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 13:50:53,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 13:50:53,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 13:50:53,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:53,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:53,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-03 13:50:53,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-03-03 13:50:53,819 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:53,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114403097] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:53,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:50:53,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 11 [2025-03-03 13:50:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021596087] [2025-03-03 13:50:53,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:53,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 13:50:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:53,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 13:50:53,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-03 13:50:53,966 INFO L87 Difference]: Start difference. First operand has 33 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-03 13:50:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:54,168 INFO L93 Difference]: Finished difference Result 74 states and 127 transitions. [2025-03-03 13:50:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 13:50:54,170 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 39 [2025-03-03 13:50:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:54,174 INFO L225 Difference]: With dead ends: 74 [2025-03-03 13:50:54,174 INFO L226 Difference]: Without dead ends: 40 [2025-03-03 13:50:54,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2025-03-03 13:50:54,180 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:54,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 182 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-03 13:50:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2025-03-03 13:50:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-03 13:50:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2025-03-03 13:50:54,213 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 39 [2025-03-03 13:50:54,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:54,214 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2025-03-03 13:50:54,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 6 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2025-03-03 13:50:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2025-03-03 13:50:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-03 13:50:54,215 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:54,215 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:54,222 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 13:50:54,420 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 13:50:54,420 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:54,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1371164649, now seen corresponding path program 1 times [2025-03-03 13:50:54,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:54,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769924541] [2025-03-03 13:50:54,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:54,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 13:50:54,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 13:50:54,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:54,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:54,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [46667110] [2025-03-03 13:50:54,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:54,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:54,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:54,454 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 13:50:54,455 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 13:50:54,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-03 13:50:54,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-03 13:50:54,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:54,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:54,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 13:50:54,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 13:50:54,525 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:54,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:54,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769924541] [2025-03-03 13:50:54,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46667110] [2025-03-03 13:50:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46667110] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:54,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:54,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711109377] [2025-03-03 13:50:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:54,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:54,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:54,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:54,527 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-03 13:50:54,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:54,568 INFO L93 Difference]: Finished difference Result 56 states and 80 transitions. [2025-03-03 13:50:54,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:54,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2025-03-03 13:50:54,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:54,569 INFO L225 Difference]: With dead ends: 56 [2025-03-03 13:50:54,569 INFO L226 Difference]: Without dead ends: 54 [2025-03-03 13:50:54,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 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 13:50:54,570 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:54,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 128 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:54,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-03-03 13:50:54,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2025-03-03 13:50:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-03 13:50:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 61 transitions. [2025-03-03 13:50:54,577 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 61 transitions. Word has length 39 [2025-03-03 13:50:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:54,577 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 61 transitions. [2025-03-03 13:50:54,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-03-03 13:50:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 61 transitions. [2025-03-03 13:50:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-03 13:50:54,578 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:54,578 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 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 13:50:54,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:54,782 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 13:50:54,782 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:54,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:54,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1302690525, now seen corresponding path program 1 times [2025-03-03 13:50:54,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:54,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234998163] [2025-03-03 13:50:54,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:54,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:54,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 13:50:54,804 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 13:50:54,804 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:54,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432407602] [2025-03-03 13:50:54,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:54,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:54,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:54,807 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 13:50:54,809 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 13:50:54,834 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 13:50:54,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 13:50:54,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:54,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:54,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:50:54,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 13:50:54,903 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:54,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234998163] [2025-03-03 13:50:54,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:54,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432407602] [2025-03-03 13:50:54,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432407602] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:54,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:54,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457795495] [2025-03-03 13:50:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:54,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:54,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:54,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:54,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:54,904 INFO L87 Difference]: Start difference. First operand 45 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:54,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:54,951 INFO L93 Difference]: Finished difference Result 52 states and 67 transitions. [2025-03-03 13:50:54,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:54,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2025-03-03 13:50:54,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:54,953 INFO L225 Difference]: With dead ends: 52 [2025-03-03 13:50:54,954 INFO L226 Difference]: Without dead ends: 50 [2025-03-03 13:50:54,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 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 13:50:54,955 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:54,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-03-03 13:50:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2025-03-03 13:50:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 25 states have (on average 1.16) internal successors, (29), 28 states have internal predecessors, (29), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-03 13:50:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2025-03-03 13:50:54,967 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 44 [2025-03-03 13:50:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:54,969 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2025-03-03 13:50:54,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2025-03-03 13:50:54,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-03 13:50:54,970 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:54,970 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:54,977 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 13:50:55,174 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 13:50:55,174 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:55,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:55,174 INFO L85 PathProgramCache]: Analyzing trace with hash 145105565, now seen corresponding path program 1 times [2025-03-03 13:50:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:55,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014158201] [2025-03-03 13:50:55,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:55,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:55,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-03 13:50:55,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 13:50:55,218 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:55,218 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:55,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787655444] [2025-03-03 13:50:55,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:55,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:55,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:55,223 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 13:50:55,224 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 13:50:55,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-03 13:50:55,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 13:50:55,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:55,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:55,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-03 13:50:55,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 13:50:55,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:55,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014158201] [2025-03-03 13:50:55,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:55,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787655444] [2025-03-03 13:50:55,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787655444] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:55,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:50:55,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2025-03-03 13:50:55,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134032436] [2025-03-03 13:50:55,431 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:55,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 13:50:55,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:55,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 13:50:55,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-03-03 13:50:55,432 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 13:50:55,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:55,523 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2025-03-03 13:50:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 13:50:55,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 54 [2025-03-03 13:50:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:55,524 INFO L225 Difference]: With dead ends: 58 [2025-03-03 13:50:55,524 INFO L226 Difference]: Without dead ends: 56 [2025-03-03 13:50:55,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-03 13:50:55,526 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:55,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 196 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-03 13:50:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2025-03-03 13:50:55,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 31 states have internal predecessors, (32), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-03 13:50:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2025-03-03 13:50:55,533 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 54 [2025-03-03 13:50:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:55,534 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2025-03-03 13:50:55,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2025-03-03 13:50:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2025-03-03 13:50:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-03-03 13:50:55,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:55,534 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 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, 1, 1] [2025-03-03 13:50:55,542 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 13:50:55,735 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 13:50:55,735 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:55,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash 63346894, now seen corresponding path program 1 times [2025-03-03 13:50:55,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:55,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619867983] [2025-03-03 13:50:55,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:55,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:55,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-03 13:50:55,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-03 13:50:55,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:55,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:55,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961125273] [2025-03-03 13:50:55,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:55,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:55,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:55,763 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 13:50:55,764 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 13:50:55,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 60 statements into 1 equivalence classes. [2025-03-03 13:50:55,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 60 of 60 statements. [2025-03-03 13:50:55,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:55,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:55,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-03 13:50:55,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 13:50:55,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-03 13:50:56,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:56,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619867983] [2025-03-03 13:50:56,027 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:56,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961125273] [2025-03-03 13:50:56,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961125273] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:56,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:50:56,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2025-03-03 13:50:56,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112766752] [2025-03-03 13:50:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:56,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:56,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:56,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:56,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-03 13:50:56,029 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 13:50:56,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:56,070 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2025-03-03 13:50:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:56,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2025-03-03 13:50:56,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:56,071 INFO L225 Difference]: With dead ends: 59 [2025-03-03 13:50:56,071 INFO L226 Difference]: Without dead ends: 57 [2025-03-03 13:50:56,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:50:56,072 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:56,072 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 123 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-03-03 13:50:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2025-03-03 13:50:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-03 13:50:56,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2025-03-03 13:50:56,083 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 60 [2025-03-03 13:50:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:56,083 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2025-03-03 13:50:56,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-03-03 13:50:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2025-03-03 13:50:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-03 13:50:56,083 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:56,084 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:56,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 13:50:56,284 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 13:50:56,284 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:56,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1928783807, now seen corresponding path program 1 times [2025-03-03 13:50:56,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:56,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659327382] [2025-03-03 13:50:56,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:56,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:56,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-03 13:50:56,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:56,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:56,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2025-03-03 13:50:56,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:56,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659327382] [2025-03-03 13:50:56,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659327382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:56,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457907898] [2025-03-03 13:50:56,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:56,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:56,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:56,494 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 13:50:56,502 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 13:50:56,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-03 13:50:56,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:56,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:56,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:56,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-03 13:50:56,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 13:50:56,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:57,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457907898] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:57,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:50:57,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 17 [2025-03-03 13:50:57,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368681905] [2025-03-03 13:50:57,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:57,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-03 13:50:57,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:57,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-03 13:50:57,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2025-03-03 13:50:57,032 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2025-03-03 13:50:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:57,271 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2025-03-03 13:50:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-03 13:50:57,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 62 [2025-03-03 13:50:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:57,273 INFO L225 Difference]: With dead ends: 80 [2025-03-03 13:50:57,273 INFO L226 Difference]: Without dead ends: 61 [2025-03-03 13:50:57,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2025-03-03 13:50:57,274 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 29 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:57,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 165 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:50:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-03 13:50:57,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2025-03-03 13:50:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-03 13:50:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2025-03-03 13:50:57,285 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 62 [2025-03-03 13:50:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:57,285 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2025-03-03 13:50:57,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 14 states have internal predecessors, (28), 10 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2025-03-03 13:50:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2025-03-03 13:50:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-03 13:50:57,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:57,286 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2025-03-03 13:50:57,292 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 13:50:57,491 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 13:50:57,491 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:57,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 285109562, now seen corresponding path program 1 times [2025-03-03 13:50:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:57,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832525661] [2025-03-03 13:50:57,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:57,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-03 13:50:57,508 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 13:50:57,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:57,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:57,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420670370] [2025-03-03 13:50:57,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:57,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:57,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:57,512 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 13:50:57,514 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 13:50:57,539 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-03 13:50:57,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-03 13:50:57,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:57,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:57,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-03 13:50:57,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2025-03-03 13:50:58,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 19 proven. 18 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2025-03-03 13:50:58,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832525661] [2025-03-03 13:50:58,489 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420670370] [2025-03-03 13:50:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420670370] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:58,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:50:58,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2025-03-03 13:50:58,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575364187] [2025-03-03 13:50:58,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:58,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 13:50:58,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:58,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 13:50:58,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2025-03-03 13:50:58,491 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand has 25 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 19 states have internal predecessors, (31), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2025-03-03 13:51:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:51:00,040 INFO L93 Difference]: Finished difference Result 130 states and 198 transitions. [2025-03-03 13:51:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-03-03 13:51:00,041 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 19 states have internal predecessors, (31), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 83 [2025-03-03 13:51:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:51:00,043 INFO L225 Difference]: With dead ends: 130 [2025-03-03 13:51:00,043 INFO L226 Difference]: Without dead ends: 128 [2025-03-03 13:51:00,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=426, Invalid=1644, Unknown=0, NotChecked=0, Total=2070 [2025-03-03 13:51:00,044 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 95 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-03 13:51:00,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 474 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-03 13:51:00,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-03-03 13:51:00,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 87. [2025-03-03 13:51:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 43 states have internal predecessors, (50), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2025-03-03 13:51:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 123 transitions. [2025-03-03 13:51:00,075 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 123 transitions. Word has length 83 [2025-03-03 13:51:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:51:00,075 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 123 transitions. [2025-03-03 13:51:00,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 19 states have internal predecessors, (31), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2025-03-03 13:51:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 123 transitions. [2025-03-03 13:51:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-03 13:51:00,076 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:51:00,076 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:51:00,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 13:51:00,280 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 13:51:00,280 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:51:00,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:51:00,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2133829932, now seen corresponding path program 1 times [2025-03-03 13:51:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:51:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936059579] [2025-03-03 13:51:00,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:51:00,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:51:00,293 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 13:51:00,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 13:51:00,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:51:00,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:51:00,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67018376] [2025-03-03 13:51:00,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:51:00,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:51:00,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:51:00,312 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 13:51:00,314 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 13:51:00,339 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-03 13:51:00,358 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-03 13:51:00,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:51:00,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:51:00,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-03 13:51:00,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:51:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2025-03-03 13:51:00,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:51:00,901 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2025-03-03 13:51:00,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:51:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936059579] [2025-03-03 13:51:00,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:51:00,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67018376] [2025-03-03 13:51:00,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67018376] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:51:00,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:51:00,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2025-03-03 13:51:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546939376] [2025-03-03 13:51:00,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:51:00,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 13:51:00,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:51:00,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 13:51:00,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2025-03-03 13:51:00,903 INFO L87 Difference]: Start difference. First operand 87 states and 123 transitions. Second operand has 22 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2025-03-03 13:51:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:51:01,568 INFO L93 Difference]: Finished difference Result 158 states and 246 transitions. [2025-03-03 13:51:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-03 13:51:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) Word has length 88 [2025-03-03 13:51:01,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:51:01,570 INFO L225 Difference]: With dead ends: 158 [2025-03-03 13:51:01,570 INFO L226 Difference]: Without dead ends: 152 [2025-03-03 13:51:01,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=991, Unknown=0, NotChecked=0, Total=1260 [2025-03-03 13:51:01,571 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 85 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 13:51:01,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 311 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 13:51:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-03-03 13:51:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 127. [2025-03-03 13:51:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 59 states have (on average 1.271186440677966) internal successors, (75), 62 states have internal predecessors, (75), 58 states have call successors, (58), 9 states have call predecessors, (58), 9 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2025-03-03 13:51:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2025-03-03 13:51:01,624 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 88 [2025-03-03 13:51:01,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:51:01,624 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2025-03-03 13:51:01,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 18 states have internal predecessors, (29), 11 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (29), 11 states have call predecessors, (29), 11 states have call successors, (29) [2025-03-03 13:51:01,624 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2025-03-03 13:51:01,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-03 13:51:01,625 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:51:01,625 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:51:01,633 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 13:51:01,825 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 13:51:01,826 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:51:01,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:51:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1712619980, now seen corresponding path program 1 times [2025-03-03 13:51:01,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:51:01,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263563288] [2025-03-03 13:51:01,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:51:01,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:51:01,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 13:51:01,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 13:51:01,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:51:01,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:51:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 35 proven. 12 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-03 13:51:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:51:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263563288] [2025-03-03 13:51:02,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263563288] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:51:02,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102632172] [2025-03-03 13:51:02,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:51:02,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:51:02,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:51:02,024 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 13:51:02,024 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 13:51:02,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-03 13:51:02,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-03 13:51:02,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:51:02,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:51:02,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:51:02,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:51:02,121 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 95 proven. 12 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2025-03-03 13:51:02,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:51:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2025-03-03 13:51:02,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102632172] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:51:02,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:51:02,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-03-03 13:51:02,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961379884] [2025-03-03 13:51:02,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:51:02,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 13:51:02,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:51:02,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 13:51:02,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-03-03 13:51:02,221 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2025-03-03 13:51:02,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:51:02,322 INFO L93 Difference]: Finished difference Result 138 states and 198 transitions. [2025-03-03 13:51:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-03 13:51:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 93 [2025-03-03 13:51:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:51:02,323 INFO L225 Difference]: With dead ends: 138 [2025-03-03 13:51:02,323 INFO L226 Difference]: Without dead ends: 62 [2025-03-03 13:51:02,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 182 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2025-03-03 13:51:02,324 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:51:02,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:51:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-03-03 13:51:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2025-03-03 13:51:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-03 13:51:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 78 transitions. [2025-03-03 13:51:02,333 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 78 transitions. Word has length 93 [2025-03-03 13:51:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:51:02,333 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 78 transitions. [2025-03-03 13:51:02,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 7 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2025-03-03 13:51:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 78 transitions. [2025-03-03 13:51:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-03-03 13:51:02,334 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:51:02,334 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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 13:51:02,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-03 13:51:02,534 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 13:51:02,534 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:51:02,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:51:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1278333350, now seen corresponding path program 2 times [2025-03-03 13:51:02,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:51:02,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138715979] [2025-03-03 13:51:02,535 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:51:02,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:51:02,543 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 125 statements into 2 equivalence classes. [2025-03-03 13:51:02,553 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 13:51:02,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:51:02,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:51:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 32 proven. 46 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2025-03-03 13:51:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:51:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138715979] [2025-03-03 13:51:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138715979] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:51:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394079455] [2025-03-03 13:51:02,768 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:51:02,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:51:02,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:51:02,770 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 13:51:02,771 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 13:51:02,801 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 125 statements into 2 equivalence classes. [2025-03-03 13:51:02,829 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 125 of 125 statements. [2025-03-03 13:51:02,829 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:51:02,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:51:02,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:51:02,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:51:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2025-03-03 13:51:02,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:51:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2025-03-03 13:51:03,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394079455] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:51:03,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:51:03,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 21 [2025-03-03 13:51:03,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253514527] [2025-03-03 13:51:03,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:51:03,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-03 13:51:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:51:03,063 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-03 13:51:03,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2025-03-03 13:51:03,063 INFO L87 Difference]: Start difference. First operand 62 states and 78 transitions. Second operand has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2025-03-03 13:51:03,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:51:03,232 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2025-03-03 13:51:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 13:51:03,233 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) Word has length 125 [2025-03-03 13:51:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:51:03,233 INFO L225 Difference]: With dead ends: 62 [2025-03-03 13:51:03,233 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 13:51:03,234 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2025-03-03 13:51:03,234 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 15 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:51:03,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 440 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:51:03,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 13:51:03,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 13:51:03,234 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 13:51:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 13:51:03,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 125 [2025-03-03 13:51:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:51:03,235 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 13:51:03,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 21 states have internal predecessors, (38), 16 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (52), 14 states have call predecessors, (52), 15 states have call successors, (52) [2025-03-03 13:51:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 13:51:03,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 13:51:03,237 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 13:51:03,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 13:51:03,437 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 13:51:03,440 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:51:03,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 13:51:03,793 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 13:51:03,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 01:51:03 BoogieIcfgContainer [2025-03-03 13:51:03,805 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 13:51:03,806 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 13:51:03,806 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 13:51:03,806 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 13:51:03,806 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:53" (3/4) ... [2025-03-03 13:51:03,808 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 13:51:03,812 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-03 13:51:03,812 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-03 13:51:03,814 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-03 13:51:03,814 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 13:51:03,814 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-03 13:51:03,815 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 13:51:03,866 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 13:51:03,867 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 13:51:03,867 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 13:51:03,868 INFO L158 Benchmark]: Toolchain (without parser) took 11216.17ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 106.8MB in the beginning and 254.6MB in the end (delta: -147.8MB). Peak memory consumption was 132.8MB. Max. memory is 16.1GB. [2025-03-03 13:51:03,868 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:51:03,868 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.26ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 94.9MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:51:03,868 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.79ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 93.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:51:03,868 INFO L158 Benchmark]: Boogie Preprocessor took 29.15ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.8MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:51:03,868 INFO L158 Benchmark]: IcfgBuilder took 213.08ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 79.3MB in the end (delta: 13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:51:03,869 INFO L158 Benchmark]: TraceAbstraction took 10729.35ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 79.3MB in the beginning and 258.7MB in the end (delta: -179.4MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. [2025-03-03 13:51:03,869 INFO L158 Benchmark]: Witness Printer took 61.45ms. Allocated memory is still 427.8MB. Free memory was 258.7MB in the beginning and 254.6MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:51:03,869 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.26ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 94.9MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.79ms. Allocated memory is still 142.6MB. Free memory was 94.9MB in the beginning and 93.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.15ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 92.8MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 213.08ms. Allocated memory is still 142.6MB. Free memory was 92.8MB in the beginning and 79.3MB in the end (delta: 13.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10729.35ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 79.3MB in the beginning and 258.7MB in the end (delta: -179.4MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. * Witness Printer took 61.45ms. Allocated memory is still 427.8MB. Free memory was 258.7MB in the beginning and 254.6MB in the end (delta: 4.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 10, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 2311 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1960 mSDsCounter, 472 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1659 IncrementalHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 472 mSolverCounterUnsat, 351 mSDtfsCounter, 1659 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1232 GetRequests, 1040 SyntacticMatches, 6 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=8, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 87 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1374 NumberOfCodeBlocks, 1374 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1436 ConstructedInterpolants, 0 QuantifiedInterpolants, 4522 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1735 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 3828/4161 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: 41]: Location Invariant Derived location invariant: ((((((((((b == 1) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1)) || (((((((__int128) q + s) == 0) && (b == 0)) && (x == 1)) && (y == 1)) && ((((__int128) r * y) + ((__int128) p * x)) == a))) - InvariantResult [Line: 47]: Location Invariant Derived location invariant: ((((((((((((b == 1) && (p == 1)) && (c == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (k == 0)) && (s == 1)) || (((((((((((c == 0) && (k == 1)) && (b == 1)) && (p == 1)) && (yy == 1)) && (a == 1)) && (x == 1)) && (r == 0)) && (q == 0)) && (y == 1)) && (s == 1))) RESULT: Ultimate proved your program to be correct! [2025-03-03 13:51:03,881 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