./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem01_label49.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/eca-rers2012/Problem01_label49.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 0a3248fe507879b589534990871f4662b2d97c2767e532585e632d27fc18c598 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:48:31,456 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:48:31,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:48:31,517 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:48:31,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:48:31,532 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:48:31,533 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:48:31,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:48:31,534 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:48:31,534 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:48:31,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:48:31,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:48:31,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:48:31,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:48:31,536 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:48:31,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:48:31,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:48:31,536 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:48:31,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:48:31,536 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:48:31,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:48:31,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:48:31,537 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:48:31,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:48:31,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:48:31,538 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:48:31,538 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 -> 0a3248fe507879b589534990871f4662b2d97c2767e532585e632d27fc18c598 [2025-03-03 09:48:31,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:48:31,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:48:31,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:48:31,758 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:48:31,758 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:48:31,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem01_label49.c [2025-03-03 09:48:32,864 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f558225d9/5159df7a255a4e2e98ee97af8959d52c/FLAG59d101235 [2025-03-03 09:48:33,135 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:48:33,136 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem01_label49.c [2025-03-03 09:48:33,150 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f558225d9/5159df7a255a4e2e98ee97af8959d52c/FLAG59d101235 [2025-03-03 09:48:33,440 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f558225d9/5159df7a255a4e2e98ee97af8959d52c [2025-03-03 09:48:33,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:48:33,443 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:48:33,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:48:33,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:48:33,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:48:33,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5f95e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33, skipping insertion in model container [2025-03-03 09:48:33,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,480 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:48:33,660 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/eca-rers2012/Problem01_label49.c[18854,18867] [2025-03-03 09:48:33,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:48:33,691 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:48:33,742 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/eca-rers2012/Problem01_label49.c[18854,18867] [2025-03-03 09:48:33,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:48:33,758 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:48:33,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33 WrapperNode [2025-03-03 09:48:33,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:48:33,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:48:33,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:48:33,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:48:33,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,801 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 655 [2025-03-03 09:48:33,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:48:33,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:48:33,802 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:48:33,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:48:33,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,841 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 09:48:33,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,856 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,859 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,864 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:48:33,865 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:48:33,865 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:48:33,865 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:48:33,865 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (1/1) ... [2025-03-03 09:48:33,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:48:33,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:48:33,892 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 09:48:33,895 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 09:48:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:48:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:48:33,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:48:33,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:48:33,968 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:48:33,970 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:48:34,744 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2025-03-03 09:48:34,745 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:48:34,754 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:48:34,755 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:48:34,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:48:34 BoogieIcfgContainer [2025-03-03 09:48:34,755 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:48:34,757 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:48:34,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:48:34,760 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:48:34,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:48:33" (1/3) ... [2025-03-03 09:48:34,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36460321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:48:34, skipping insertion in model container [2025-03-03 09:48:34,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:48:33" (2/3) ... [2025-03-03 09:48:34,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36460321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:48:34, skipping insertion in model container [2025-03-03 09:48:34,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:48:34" (3/3) ... [2025-03-03 09:48:34,762 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2025-03-03 09:48:34,772 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:48:34,774 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem01_label49.c that has 1 procedures, 198 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 09:48:34,822 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:48:34,829 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;@2b95ae8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:48:34,829 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:48:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.663265306122449) internal successors, (326), 197 states have internal predecessors, (326), 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 09:48:34,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-03-03 09:48:34,838 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:34,840 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:34,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:34,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1069406839, now seen corresponding path program 1 times [2025-03-03 09:48:34,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:34,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51831094] [2025-03-03 09:48:34,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:34,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:34,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-03-03 09:48:34,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-03-03 09:48:34,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:34,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:35,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:48:35,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:35,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51831094] [2025-03-03 09:48:35,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51831094] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:35,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:35,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:48:35,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914817710] [2025-03-03 09:48:35,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:35,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:35,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:35,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:35,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:35,350 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.663265306122449) internal successors, (326), 197 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 09:48:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:35,902 INFO L93 Difference]: Finished difference Result 528 states and 912 transitions. [2025-03-03 09:48:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:35,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2025-03-03 09:48:35,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:35,910 INFO L225 Difference]: With dead ends: 528 [2025-03-03 09:48:35,910 INFO L226 Difference]: Without dead ends: 266 [2025-03-03 09:48:35,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:35,916 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 65 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:35,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 84 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:48:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-03-03 09:48:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2025-03-03 09:48:35,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4339622641509433) internal successors, (380), 265 states have internal predecessors, (380), 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 09:48:35,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2025-03-03 09:48:35,957 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 107 [2025-03-03 09:48:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:35,958 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2025-03-03 09:48:35,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 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 09:48:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2025-03-03 09:48:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-03 09:48:35,960 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:35,960 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:35,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:48:35,960 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:35,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:35,961 INFO L85 PathProgramCache]: Analyzing trace with hash 220088875, now seen corresponding path program 1 times [2025-03-03 09:48:35,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:35,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240831501] [2025-03-03 09:48:35,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:35,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:35,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-03 09:48:35,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-03 09:48:35,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:35,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:48:36,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:36,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240831501] [2025-03-03 09:48:36,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240831501] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:36,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:36,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:48:36,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833046499] [2025-03-03 09:48:36,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:36,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:36,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:36,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:36,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:36,087 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 09:48:36,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:36,430 INFO L93 Difference]: Finished difference Result 792 states and 1135 transitions. [2025-03-03 09:48:36,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:36,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2025-03-03 09:48:36,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:36,434 INFO L225 Difference]: With dead ends: 792 [2025-03-03 09:48:36,434 INFO L226 Difference]: Without dead ends: 528 [2025-03-03 09:48:36,435 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:36,435 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 142 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:36,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 36 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:36,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2025-03-03 09:48:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2025-03-03 09:48:36,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3453510436432639) internal successors, (709), 527 states have internal predecessors, (709), 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 09:48:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 709 transitions. [2025-03-03 09:48:36,458 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 709 transitions. Word has length 113 [2025-03-03 09:48:36,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:36,458 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 709 transitions. [2025-03-03 09:48:36,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 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 09:48:36,459 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 709 transitions. [2025-03-03 09:48:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-03 09:48:36,460 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:36,460 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:36,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 09:48:36,460 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:36,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash -695607542, now seen corresponding path program 1 times [2025-03-03 09:48:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851712555] [2025-03-03 09:48:36,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:36,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-03 09:48:36,499 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-03 09:48:36,499 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:36,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:48:36,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851712555] [2025-03-03 09:48:36,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851712555] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:36,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:36,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310763816] [2025-03-03 09:48:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:36,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:48:36,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:36,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:48:36,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:36,779 INFO L87 Difference]: Start difference. First operand 528 states and 709 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 09:48:37,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:37,271 INFO L93 Difference]: Finished difference Result 1411 states and 1882 transitions. [2025-03-03 09:48:37,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:48:37,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-03-03 09:48:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:37,274 INFO L225 Difference]: With dead ends: 1411 [2025-03-03 09:48:37,274 INFO L226 Difference]: Without dead ends: 790 [2025-03-03 09:48:37,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:37,276 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 130 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:37,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 80 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-03 09:48:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2025-03-03 09:48:37,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2025-03-03 09:48:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.1634980988593155) internal successors, (918), 789 states have internal predecessors, (918), 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 09:48:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 918 transitions. [2025-03-03 09:48:37,295 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 918 transitions. Word has length 114 [2025-03-03 09:48:37,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:37,295 INFO L471 AbstractCegarLoop]: Abstraction has 790 states and 918 transitions. [2025-03-03 09:48:37,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 09:48:37,296 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 918 transitions. [2025-03-03 09:48:37,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-03-03 09:48:37,297 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:37,297 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:37,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 09:48:37,298 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:37,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash -645866035, now seen corresponding path program 1 times [2025-03-03 09:48:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466207607] [2025-03-03 09:48:37,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:37,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:37,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-03-03 09:48:37,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-03-03 09:48:37,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:37,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 09:48:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466207607] [2025-03-03 09:48:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466207607] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:37,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:37,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 09:48:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636211791] [2025-03-03 09:48:37,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:37,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:37,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:37,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:37,467 INFO L87 Difference]: Start difference. First operand 790 states and 918 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 09:48:37,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:37,753 INFO L93 Difference]: Finished difference Result 1578 states and 1859 transitions. [2025-03-03 09:48:37,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:37,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2025-03-03 09:48:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:37,756 INFO L225 Difference]: With dead ends: 1578 [2025-03-03 09:48:37,756 INFO L226 Difference]: Without dead ends: 921 [2025-03-03 09:48:37,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:37,757 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 129 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:37,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 45 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:37,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2025-03-03 09:48:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 921. [2025-03-03 09:48:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 1.1532608695652173) internal successors, (1061), 920 states have internal predecessors, (1061), 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 09:48:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1061 transitions. [2025-03-03 09:48:37,772 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1061 transitions. Word has length 119 [2025-03-03 09:48:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:37,773 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1061 transitions. [2025-03-03 09:48:37,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 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 09:48:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1061 transitions. [2025-03-03 09:48:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-03-03 09:48:37,774 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:37,774 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:37,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 09:48:37,775 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:37,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:37,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1527083865, now seen corresponding path program 1 times [2025-03-03 09:48:37,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:37,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877284791] [2025-03-03 09:48:37,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:37,794 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-03 09:48:37,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-03 09:48:37,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:37,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-03 09:48:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:37,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877284791] [2025-03-03 09:48:37,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877284791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:37,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:37,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026625636] [2025-03-03 09:48:37,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:37,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:37,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:37,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:37,852 INFO L87 Difference]: Start difference. First operand 921 states and 1061 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 09:48:38,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:38,182 INFO L93 Difference]: Finished difference Result 2364 states and 2732 transitions. [2025-03-03 09:48:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:38,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2025-03-03 09:48:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:38,188 INFO L225 Difference]: With dead ends: 2364 [2025-03-03 09:48:38,188 INFO L226 Difference]: Without dead ends: 1576 [2025-03-03 09:48:38,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:38,190 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 133 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:38,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 21 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2025-03-03 09:48:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1314. [2025-03-03 09:48:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1313 states have (on average 1.1591774562071593) internal successors, (1522), 1313 states have internal predecessors, (1522), 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 09:48:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1522 transitions. [2025-03-03 09:48:38,216 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1522 transitions. Word has length 128 [2025-03-03 09:48:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:38,217 INFO L471 AbstractCegarLoop]: Abstraction has 1314 states and 1522 transitions. [2025-03-03 09:48:38,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 09:48:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1522 transitions. [2025-03-03 09:48:38,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-03-03 09:48:38,220 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:38,220 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:38,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 09:48:38,220 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:38,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:38,221 INFO L85 PathProgramCache]: Analyzing trace with hash -965422251, now seen corresponding path program 1 times [2025-03-03 09:48:38,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:38,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572358642] [2025-03-03 09:48:38,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:38,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:38,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-03 09:48:38,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-03 09:48:38,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:38,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-03 09:48:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:38,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572358642] [2025-03-03 09:48:38,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572358642] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:38,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:38,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:38,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389606863] [2025-03-03 09:48:38,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:38,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:38,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:38,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:38,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:38,397 INFO L87 Difference]: Start difference. First operand 1314 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 09:48:38,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:38,717 INFO L93 Difference]: Finished difference Result 2757 states and 3187 transitions. [2025-03-03 09:48:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:38,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2025-03-03 09:48:38,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:38,722 INFO L225 Difference]: With dead ends: 2757 [2025-03-03 09:48:38,723 INFO L226 Difference]: Without dead ends: 1445 [2025-03-03 09:48:38,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:38,726 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 123 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:38,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 189 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:38,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2025-03-03 09:48:38,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1445. [2025-03-03 09:48:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.1405817174515236) internal successors, (1647), 1444 states have internal predecessors, (1647), 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 09:48:38,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1647 transitions. [2025-03-03 09:48:38,748 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1647 transitions. Word has length 156 [2025-03-03 09:48:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:38,749 INFO L471 AbstractCegarLoop]: Abstraction has 1445 states and 1647 transitions. [2025-03-03 09:48:38,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 09:48:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1647 transitions. [2025-03-03 09:48:38,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-03 09:48:38,751 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:38,751 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:38,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-03 09:48:38,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:38,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1841031640, now seen corresponding path program 1 times [2025-03-03 09:48:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:38,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157320037] [2025-03-03 09:48:38,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:38,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:38,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-03 09:48:38,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-03 09:48:38,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:38,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:38,908 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-03-03 09:48:38,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:38,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157320037] [2025-03-03 09:48:38,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157320037] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:38,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:38,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:38,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072225730] [2025-03-03 09:48:38,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:38,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:48:38,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:38,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:48:38,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:38,909 INFO L87 Difference]: Start difference. First operand 1445 states and 1647 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 09:48:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:39,382 INFO L93 Difference]: Finished difference Result 3543 states and 4070 transitions. [2025-03-03 09:48:39,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:48:39,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2025-03-03 09:48:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:39,388 INFO L225 Difference]: With dead ends: 3543 [2025-03-03 09:48:39,388 INFO L226 Difference]: Without dead ends: 2100 [2025-03-03 09:48:39,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:48:39,390 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 238 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:39,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 47 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:48:39,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2025-03-03 09:48:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1969. [2025-03-03 09:48:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.1458333333333333) internal successors, (2255), 1968 states have internal predecessors, (2255), 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 09:48:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2255 transitions. [2025-03-03 09:48:39,431 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2255 transitions. Word has length 170 [2025-03-03 09:48:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:39,431 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2255 transitions. [2025-03-03 09:48:39,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 09:48:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2255 transitions. [2025-03-03 09:48:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2025-03-03 09:48:39,435 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:39,435 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:39,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-03 09:48:39,435 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:39,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:39,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2114198683, now seen corresponding path program 1 times [2025-03-03 09:48:39,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:39,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467358953] [2025-03-03 09:48:39,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:39,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:39,453 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-03-03 09:48:39,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-03-03 09:48:39,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:39,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 100 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-03 09:48:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467358953] [2025-03-03 09:48:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467358953] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:48:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847307696] [2025-03-03 09:48:39,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:39,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:48:39,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:48:39,560 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 09:48:39,561 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 09:48:39,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 189 statements into 1 equivalence classes. [2025-03-03 09:48:39,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 189 of 189 statements. [2025-03-03 09:48:39,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:39,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:39,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:48:39,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:48:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-03-03 09:48:39,724 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:48:39,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847307696] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:39,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:48:39,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-03-03 09:48:39,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675893679] [2025-03-03 09:48:39,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:39,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:39,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:39,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:39,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:48:39,725 INFO L87 Difference]: Start difference. First operand 1969 states and 2255 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 09:48:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:40,048 INFO L93 Difference]: Finished difference Result 5117 states and 5867 transitions. [2025-03-03 09:48:40,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:40,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2025-03-03 09:48:40,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:40,061 INFO L225 Difference]: With dead ends: 5117 [2025-03-03 09:48:40,062 INFO L226 Difference]: Without dead ends: 3150 [2025-03-03 09:48:40,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:48:40,064 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 138 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:40,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 32 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2025-03-03 09:48:40,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 2886. [2025-03-03 09:48:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2885 states have (on average 1.1348353552859618) internal successors, (3274), 2885 states have internal predecessors, (3274), 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 09:48:40,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3274 transitions. [2025-03-03 09:48:40,116 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3274 transitions. Word has length 189 [2025-03-03 09:48:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:40,117 INFO L471 AbstractCegarLoop]: Abstraction has 2886 states and 3274 transitions. [2025-03-03 09:48:40,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 09:48:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3274 transitions. [2025-03-03 09:48:40,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-03-03 09:48:40,123 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:40,124 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:40,131 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 09:48:40,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:48:40,325 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:40,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2138450695, now seen corresponding path program 1 times [2025-03-03 09:48:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:40,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34727409] [2025-03-03 09:48:40,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:40,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:40,354 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-03-03 09:48:40,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-03-03 09:48:40,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:40,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 09:48:40,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34727409] [2025-03-03 09:48:40,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34727409] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:40,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:40,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090661266] [2025-03-03 09:48:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:40,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:40,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:40,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:40,470 INFO L87 Difference]: Start difference. First operand 2886 states and 3274 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 09:48:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:40,824 INFO L93 Difference]: Finished difference Result 6425 states and 7322 transitions. [2025-03-03 09:48:40,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:40,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2025-03-03 09:48:40,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:40,833 INFO L225 Difference]: With dead ends: 6425 [2025-03-03 09:48:40,833 INFO L226 Difference]: Without dead ends: 3541 [2025-03-03 09:48:40,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:40,837 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 136 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:40,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 30 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2025-03-03 09:48:40,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2886. [2025-03-03 09:48:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2885 states have (on average 1.1348353552859618) internal successors, (3274), 2885 states have internal predecessors, (3274), 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 09:48:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3274 transitions. [2025-03-03 09:48:40,889 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3274 transitions. Word has length 206 [2025-03-03 09:48:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:40,889 INFO L471 AbstractCegarLoop]: Abstraction has 2886 states and 3274 transitions. [2025-03-03 09:48:40,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 09:48:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3274 transitions. [2025-03-03 09:48:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2025-03-03 09:48:40,893 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:40,893 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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 09:48:40,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-03 09:48:40,893 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:40,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash -779263070, now seen corresponding path program 1 times [2025-03-03 09:48:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:40,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507777935] [2025-03-03 09:48:40,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:40,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:40,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 212 statements into 1 equivalence classes. [2025-03-03 09:48:40,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 212 of 212 statements. [2025-03-03 09:48:40,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:40,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:41,039 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-03 09:48:41,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:41,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507777935] [2025-03-03 09:48:41,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507777935] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:41,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:41,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610625761] [2025-03-03 09:48:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:41,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:41,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:41,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:41,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:41,041 INFO L87 Difference]: Start difference. First operand 2886 states and 3274 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 09:48:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:41,351 INFO L93 Difference]: Finished difference Result 6032 states and 6849 transitions. [2025-03-03 09:48:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:41,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2025-03-03 09:48:41,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:41,359 INFO L225 Difference]: With dead ends: 6032 [2025-03-03 09:48:41,359 INFO L226 Difference]: Without dead ends: 3148 [2025-03-03 09:48:41,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:41,362 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 93 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:41,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 42 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3148 states. [2025-03-03 09:48:41,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3148 to 2100. [2025-03-03 09:48:41,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 1.1291090995712243) internal successors, (2370), 2099 states have internal predecessors, (2370), 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 09:48:41,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2370 transitions. [2025-03-03 09:48:41,428 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2370 transitions. Word has length 212 [2025-03-03 09:48:41,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:41,428 INFO L471 AbstractCegarLoop]: Abstraction has 2100 states and 2370 transitions. [2025-03-03 09:48:41,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 09:48:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2370 transitions. [2025-03-03 09:48:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2025-03-03 09:48:41,432 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:41,432 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:41,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-03 09:48:41,432 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:41,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:41,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1222301023, now seen corresponding path program 1 times [2025-03-03 09:48:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:41,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816625965] [2025-03-03 09:48:41,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:41,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:41,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 268 statements into 1 equivalence classes. [2025-03-03 09:48:41,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 268 of 268 statements. [2025-03-03 09:48:41,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:41,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-03 09:48:41,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:41,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816625965] [2025-03-03 09:48:41,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816625965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:41,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:48:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:48:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204228706] [2025-03-03 09:48:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:41,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:41,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:41,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:41,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:41,521 INFO L87 Difference]: Start difference. First operand 2100 states and 2370 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 09:48:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:41,790 INFO L93 Difference]: Finished difference Result 4198 states and 4738 transitions. [2025-03-03 09:48:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2025-03-03 09:48:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:41,796 INFO L225 Difference]: With dead ends: 4198 [2025-03-03 09:48:41,796 INFO L226 Difference]: Without dead ends: 2100 [2025-03-03 09:48:41,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:48:41,798 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 96 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:41,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 170 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:48:41,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2025-03-03 09:48:41,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2100. [2025-03-03 09:48:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 1.11195807527394) internal successors, (2334), 2099 states have internal predecessors, (2334), 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 09:48:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2334 transitions. [2025-03-03 09:48:41,825 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2334 transitions. Word has length 268 [2025-03-03 09:48:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:41,825 INFO L471 AbstractCegarLoop]: Abstraction has 2100 states and 2334 transitions. [2025-03-03 09:48:41,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 09:48:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2334 transitions. [2025-03-03 09:48:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-03-03 09:48:41,828 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:41,828 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:41,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-03 09:48:41,829 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:41,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash -811716607, now seen corresponding path program 1 times [2025-03-03 09:48:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435953366] [2025-03-03 09:48:41,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:41,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-03-03 09:48:41,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-03-03 09:48:41,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:41,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-03 09:48:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:42,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435953366] [2025-03-03 09:48:42,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435953366] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:48:42,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683157173] [2025-03-03 09:48:42,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:42,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:48:42,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:48:42,335 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 09:48:42,337 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 09:48:42,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-03-03 09:48:42,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-03-03 09:48:42,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:42,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:42,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:48:42,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:48:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-03 09:48:42,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:48:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683157173] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:42,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:48:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-03 09:48:42,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889073964] [2025-03-03 09:48:42,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:42,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:42,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:42,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:48:42,606 INFO L87 Difference]: Start difference. First operand 2100 states and 2334 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 09:48:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:42,888 INFO L93 Difference]: Finished difference Result 4198 states and 4666 transitions. [2025-03-03 09:48:42,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 277 [2025-03-03 09:48:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:42,893 INFO L225 Difference]: With dead ends: 4198 [2025-03-03 09:48:42,894 INFO L226 Difference]: Without dead ends: 2100 [2025-03-03 09:48:42,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:48:42,897 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:42,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 173 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2025-03-03 09:48:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1969. [2025-03-03 09:48:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.0899390243902438) internal successors, (2145), 1968 states have internal predecessors, (2145), 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 09:48:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2145 transitions. [2025-03-03 09:48:42,927 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2145 transitions. Word has length 277 [2025-03-03 09:48:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:42,927 INFO L471 AbstractCegarLoop]: Abstraction has 1969 states and 2145 transitions. [2025-03-03 09:48:42,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 09:48:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2145 transitions. [2025-03-03 09:48:42,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2025-03-03 09:48:42,931 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:48:42,932 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:42,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 09:48:43,136 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,SelfDestructingSolverStorable11 [2025-03-03 09:48:43,136 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:48:43,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:48:43,136 INFO L85 PathProgramCache]: Analyzing trace with hash -298957779, now seen corresponding path program 1 times [2025-03-03 09:48:43,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:48:43,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194405823] [2025-03-03 09:48:43,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:43,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:48:43,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-03 09:48:43,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-03 09:48:43,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:43,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 270 proven. 114 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-03 09:48:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:48:43,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194405823] [2025-03-03 09:48:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194405823] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:48:43,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066276956] [2025-03-03 09:48:43,549 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:48:43,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:48:43,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:48:43,551 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 09:48:43,553 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 09:48:43,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 301 statements into 1 equivalence classes. [2025-03-03 09:48:43,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 301 of 301 statements. [2025-03-03 09:48:43,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:48:43,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:48:43,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 09:48:43,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:48:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2025-03-03 09:48:43,847 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 09:48:43,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066276956] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:48:43,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 09:48:43,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-03 09:48:43,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49189854] [2025-03-03 09:48:43,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:48:43,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:48:43,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:48:43,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:48:43,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:48:43,850 INFO L87 Difference]: Start difference. First operand 1969 states and 2145 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 09:48:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:48:44,140 INFO L93 Difference]: Finished difference Result 4327 states and 4708 transitions. [2025-03-03 09:48:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:48:44,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 301 [2025-03-03 09:48:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:48:44,141 INFO L225 Difference]: With dead ends: 4327 [2025-03-03 09:48:44,141 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 09:48:44,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:48:44,144 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 33 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:48:44,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 170 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:48:44,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 09:48:44,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 09:48:44,145 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 09:48:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 09:48:44,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 301 [2025-03-03 09:48:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:48:44,145 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 09:48:44,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 09:48:44,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 09:48:44,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 09:48:44,147 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 09:48:44,155 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 09:48:44,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:48:44,354 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:48:44,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 09:48:44,657 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 09:48:44,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 09:48:44 BoogieIcfgContainer [2025-03-03 09:48:44,676 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 09:48:44,676 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 09:48:44,676 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 09:48:44,677 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 09:48:44,677 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:48:34" (3/4) ... [2025-03-03 09:48:44,679 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 09:48:44,691 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2025-03-03 09:48:44,691 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 09:48:44,692 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-03 09:48:44,692 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 09:48:44,774 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 09:48:44,774 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 09:48:44,774 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 09:48:44,775 INFO L158 Benchmark]: Toolchain (without parser) took 11332.40ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 130.3MB in the beginning and 110.1MB in the end (delta: 20.2MB). Peak memory consumption was 148.4MB. Max. memory is 16.1GB. [2025-03-03 09:48:44,775 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:48:44,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.28ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 103.5MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-03 09:48:44,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.61ms. Allocated memory is still 167.8MB. Free memory was 103.5MB in the beginning and 98.4MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:48:44,776 INFO L158 Benchmark]: Boogie Preprocessor took 62.18ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 94.3MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 09:48:44,776 INFO L158 Benchmark]: IcfgBuilder took 890.27ms. Allocated memory is still 167.8MB. Free memory was 94.3MB in the beginning and 95.6MB in the end (delta: -1.3MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2025-03-03 09:48:44,776 INFO L158 Benchmark]: TraceAbstraction took 9918.56ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 94.7MB in the beginning and 122.0MB in the end (delta: -27.2MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. [2025-03-03 09:48:44,776 INFO L158 Benchmark]: Witness Printer took 98.02ms. Allocated memory is still 293.6MB. Free memory was 122.0MB in the beginning and 110.1MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 09:48:44,779 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 126.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.28ms. Allocated memory is still 167.8MB. Free memory was 130.3MB in the beginning and 103.5MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.61ms. Allocated memory is still 167.8MB. Free memory was 103.5MB in the beginning and 98.4MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.18ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 94.3MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 890.27ms. Allocated memory is still 167.8MB. Free memory was 94.3MB in the beginning and 95.6MB in the end (delta: -1.3MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9918.56ms. Allocated memory was 167.8MB in the beginning and 293.6MB in the end (delta: 125.8MB). Free memory was 94.7MB in the beginning and 122.0MB in the end (delta: -27.2MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. * Witness Printer took 98.02ms. Allocated memory is still 293.6MB. Free memory was 122.0MB in the beginning and 110.1MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. 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: 507]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 13, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1487 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1487 mSDsluCounter, 1119 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 642 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4686 IncrementalHoareTripleChecker+Invalid, 5328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 642 mSolverCounterUnsat, 1040 mSDtfsCounter, 4686 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 809 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2886occurred in iteration=8, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 2491 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 3127 NumberOfCodeBlocks, 3127 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3111 ConstructedInterpolants, 0 QuantifiedInterpolants, 11463 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1395 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 16 InterpolantComputations, 13 PerfectInterpolantSequences, 2690/2978 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: 593]: Location Invariant Derived location invariant: (((((((((((((a7 <= 0) && (a8 <= 13)) && (a12 == 8)) && (a21 == 1)) && (a17 == 1)) && (a20 == 1)) || (((a8 <= 13) && (a21 <= 0)) && (a20 == 1))) || (((a21 <= 0) && (a17 == 1)) && (a16 <= 5))) || (((a20 != 1) && (a7 != 1)) && (a16 <= 5))) || ((a7 <= 0) && (a16 <= 5))) || (((((((a12 == 8) && (a8 == 13)) && (a21 == 1)) && (a17 == 1)) && (a7 == 1)) && (a20 == 1)) && (a16 == 4))) || (15 <= a8)) || ((14 <= a8) && (a16 <= 5))) RESULT: Ultimate proved your program to be correct! [2025-03-03 09:48:44,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE