./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/dll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/dll-token-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 23:04:28,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 23:04:28,228 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-08 23:04:28,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 23:04:28,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 23:04:28,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 23:04:28,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 23:04:28,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 23:04:28,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 23:04:28,256 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 23:04:28,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 23:04:28,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 23:04:28,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 23:04:28,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 23:04:28,256 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 23:04:28,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 23:04:28,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 23:04:28,258 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 23:04:28,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 23:04:28,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 23:04:28,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 23:04:28,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 23:04:28,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 23:04:28,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 23:04:28,259 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 26e745e5a6378d1005b5b65d8cf35b442871742f5efbed2506d4a18acf4ab9a5 [2025-03-08 23:04:28,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 23:04:28,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 23:04:28,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 23:04:28,499 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 23:04:28,500 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 23:04:28,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-token-1.i [2025-03-08 23:04:29,644 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108e26ad4/de7c33c3ecfc43f48d4116c9290236b1/FLAG67fce0ca9 [2025-03-08 23:04:29,935 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 23:04:29,935 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-token-1.i [2025-03-08 23:04:29,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108e26ad4/de7c33c3ecfc43f48d4116c9290236b1/FLAG67fce0ca9 [2025-03-08 23:04:30,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108e26ad4/de7c33c3ecfc43f48d4116c9290236b1 [2025-03-08 23:04:30,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 23:04:30,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 23:04:30,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 23:04:30,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 23:04:30,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 23:04:30,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d4fb47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30, skipping insertion in model container [2025-03-08 23:04:30,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,249 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 23:04:30,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 23:04:30,474 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 23:04:30,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 23:04:30,522 INFO L204 MainTranslator]: Completed translation [2025-03-08 23:04:30,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30 WrapperNode [2025-03-08 23:04:30,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 23:04:30,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 23:04:30,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 23:04:30,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 23:04:30,527 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,553 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 130 [2025-03-08 23:04:30,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 23:04:30,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 23:04:30,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 23:04:30,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 23:04:30,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,575 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 10 writes are split as follows [0, 10]. [2025-03-08 23:04:30,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,584 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 23:04:30,589 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 23:04:30,590 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 23:04:30,590 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 23:04:30,590 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (1/1) ... [2025-03-08 23:04:30,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 23:04:30,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 23:04:30,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 23:04:30,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2025-03-08 23:04:30,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 23:04:30,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 23:04:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 23:04:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 23:04:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 23:04:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 23:04:30,703 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 23:04:30,704 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 23:04:30,959 INFO L? ?]: Removed 112 outVars from TransFormulas that were not future-live. [2025-03-08 23:04:30,959 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 23:04:30,968 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 23:04:30,970 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 23:04:30,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:04:30 BoogieIcfgContainer [2025-03-08 23:04:30,971 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 23:04:30,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 23:04:30,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 23:04:30,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 23:04:30,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 11:04:30" (1/3) ... [2025-03-08 23:04:30,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b77e212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:04:30, skipping insertion in model container [2025-03-08 23:04:30,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 11:04:30" (2/3) ... [2025-03-08 23:04:30,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b77e212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 11:04:30, skipping insertion in model container [2025-03-08 23:04:30,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 11:04:30" (3/3) ... [2025-03-08 23:04:30,978 INFO L128 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2025-03-08 23:04:30,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 23:04:30,988 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll-token-1.i that has 2 procedures, 141 locations, 1 initial locations, 9 loop locations, and 59 error locations. [2025-03-08 23:04:31,012 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 23:04:31,021 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=None, 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;@64347434, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 23:04:31,022 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2025-03-08 23:04:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 74 states have (on average 2.135135135135135) internal successors, (158), 133 states have internal predecessors, (158), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-03-08 23:04:31,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 23:04:31,029 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:31,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 23:04:31,030 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:31,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:31,035 INFO L85 PathProgramCache]: Analyzing trace with hash 195588, now seen corresponding path program 1 times [2025-03-08 23:04:31,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811545844] [2025-03-08 23:04:31,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:31,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 23:04:31,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 23:04:31,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:31,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:31,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811545844] [2025-03-08 23:04:31,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811545844] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:31,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:31,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 23:04:31,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663139954] [2025-03-08 23:04:31,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:31,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 23:04:31,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:31,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 23:04:31,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 23:04:31,196 INFO L87 Difference]: Start difference. First operand has 141 states, 74 states have (on average 2.135135135135135) internal successors, (158), 133 states have internal predecessors, (158), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:31,318 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2025-03-08 23:04:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 23:04:31,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-03-08 23:04:31,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:31,328 INFO L225 Difference]: With dead ends: 130 [2025-03-08 23:04:31,328 INFO L226 Difference]: Without dead ends: 128 [2025-03-08 23:04:31,330 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 [2025-03-08 23:04:31,331 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 82 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:31,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 115 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-03-08 23:04:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2025-03-08 23:04:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 66 states have (on average 1.9545454545454546) internal successors, (129), 126 states have internal predecessors, (129), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2025-03-08 23:04:31,365 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 3 [2025-03-08 23:04:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:31,365 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2025-03-08 23:04:31,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2025-03-08 23:04:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 23:04:31,366 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:31,366 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 23:04:31,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 23:04:31,367 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:31,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash 195589, now seen corresponding path program 1 times [2025-03-08 23:04:31,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:31,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219855596] [2025-03-08 23:04:31,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:31,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 23:04:31,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 23:04:31,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:31,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:31,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:31,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:31,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219855596] [2025-03-08 23:04:31,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219855596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:31,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:31,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 23:04:31,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948544831] [2025-03-08 23:04:31,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:31,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 23:04:31,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:31,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 23:04:31,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 23:04:31,456 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:31,534 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2025-03-08 23:04:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 23:04:31,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2025-03-08 23:04:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:31,536 INFO L225 Difference]: With dead ends: 125 [2025-03-08 23:04:31,536 INFO L226 Difference]: Without dead ends: 125 [2025-03-08 23:04:31,536 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 [2025-03-08 23:04:31,537 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:31,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 115 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:31,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-03-08 23:04:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2025-03-08 23:04:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 123 states have internal predecessors, (126), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2025-03-08 23:04:31,550 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 3 [2025-03-08 23:04:31,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:31,550 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 132 transitions. [2025-03-08 23:04:31,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 132 transitions. [2025-03-08 23:04:31,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 23:04:31,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:31,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:31,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 23:04:31,551 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:31,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -780289503, now seen corresponding path program 1 times [2025-03-08 23:04:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:31,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331490387] [2025-03-08 23:04:31,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:31,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:31,563 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 23:04:31,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 23:04:31,569 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:31,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:31,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331490387] [2025-03-08 23:04:31,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331490387] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:31,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:31,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 23:04:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662467544] [2025-03-08 23:04:31,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:31,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 23:04:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:31,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 23:04:31,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 23:04:31,648 INFO L87 Difference]: Start difference. First operand 125 states and 132 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:31,807 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2025-03-08 23:04:31,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:31,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2025-03-08 23:04:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:31,809 INFO L225 Difference]: With dead ends: 112 [2025-03-08 23:04:31,811 INFO L226 Difference]: Without dead ends: 112 [2025-03-08 23:04:31,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:31,811 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 124 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:31,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 77 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:31,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-08 23:04:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2025-03-08 23:04:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 68 states have (on average 1.6911764705882353) internal successors, (115), 110 states have internal predecessors, (115), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2025-03-08 23:04:31,821 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 9 [2025-03-08 23:04:31,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:31,821 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2025-03-08 23:04:31,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:31,821 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2025-03-08 23:04:31,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 23:04:31,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:31,822 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:31,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 23:04:31,822 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:31,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:31,822 INFO L85 PathProgramCache]: Analyzing trace with hash -780289502, now seen corresponding path program 1 times [2025-03-08 23:04:31,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:31,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698577222] [2025-03-08 23:04:31,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:31,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 23:04:31,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 23:04:31,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:31,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:31,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:31,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698577222] [2025-03-08 23:04:31,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698577222] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:31,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:31,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 23:04:31,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121509780] [2025-03-08 23:04:31,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:31,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 23:04:31,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:31,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 23:04:31,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 23:04:31,942 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:32,114 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2025-03-08 23:04:32,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:32,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2025-03-08 23:04:32,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:32,115 INFO L225 Difference]: With dead ends: 159 [2025-03-08 23:04:32,117 INFO L226 Difference]: Without dead ends: 159 [2025-03-08 23:04:32,117 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:32,117 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 145 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:32,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 124 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 23:04:32,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-03-08 23:04:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2025-03-08 23:04:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 105 states have (on average 1.5523809523809524) internal successors, (163), 147 states have internal predecessors, (163), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 169 transitions. [2025-03-08 23:04:32,128 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 169 transitions. Word has length 9 [2025-03-08 23:04:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:32,128 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 169 transitions. [2025-03-08 23:04:32,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 169 transitions. [2025-03-08 23:04:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 23:04:32,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:32,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:32,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 23:04:32,129 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:32,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1239794536, now seen corresponding path program 1 times [2025-03-08 23:04:32,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:32,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155561692] [2025-03-08 23:04:32,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:32,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:32,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 23:04:32,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 23:04:32,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:32,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:32,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155561692] [2025-03-08 23:04:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155561692] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:32,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:32,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 23:04:32,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043336462] [2025-03-08 23:04:32,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:32,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 23:04:32,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:32,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 23:04:32,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:32,243 INFO L87 Difference]: Start difference. First operand 149 states and 169 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:32,363 INFO L93 Difference]: Finished difference Result 148 states and 167 transitions. [2025-03-08 23:04:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2025-03-08 23:04:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:32,365 INFO L225 Difference]: With dead ends: 148 [2025-03-08 23:04:32,365 INFO L226 Difference]: Without dead ends: 148 [2025-03-08 23:04:32,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 23:04:32,378 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 4 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:32,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 291 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-03-08 23:04:32,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2025-03-08 23:04:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 105 states have (on average 1.5333333333333334) internal successors, (161), 146 states have internal predecessors, (161), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 167 transitions. [2025-03-08 23:04:32,386 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 167 transitions. Word has length 12 [2025-03-08 23:04:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:32,386 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 167 transitions. [2025-03-08 23:04:32,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 167 transitions. [2025-03-08 23:04:32,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 23:04:32,386 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:32,386 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:32,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 23:04:32,386 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:32,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:32,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1239794535, now seen corresponding path program 1 times [2025-03-08 23:04:32,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:32,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094550504] [2025-03-08 23:04:32,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:32,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:32,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 23:04:32,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 23:04:32,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:32,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:32,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:32,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:32,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094550504] [2025-03-08 23:04:32,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094550504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:32,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:32,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 23:04:32,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906508001] [2025-03-08 23:04:32,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:32,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 23:04:32,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:32,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 23:04:32,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:32,545 INFO L87 Difference]: Start difference. First operand 148 states and 167 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:32,673 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2025-03-08 23:04:32,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:32,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2025-03-08 23:04:32,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:32,674 INFO L225 Difference]: With dead ends: 147 [2025-03-08 23:04:32,674 INFO L226 Difference]: Without dead ends: 147 [2025-03-08 23:04:32,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 23:04:32,674 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 2 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:32,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 286 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:32,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-03-08 23:04:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2025-03-08 23:04:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 105 states have (on average 1.5142857142857142) internal successors, (159), 145 states have internal predecessors, (159), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2025-03-08 23:04:32,679 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 12 [2025-03-08 23:04:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:32,679 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2025-03-08 23:04:32,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2025-03-08 23:04:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 23:04:32,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:32,679 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:32,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 23:04:32,680 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:32,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 931274518, now seen corresponding path program 1 times [2025-03-08 23:04:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:32,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362073425] [2025-03-08 23:04:32,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:32,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:32,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 23:04:32,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 23:04:32,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:32,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:32,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:32,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362073425] [2025-03-08 23:04:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362073425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:32,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:32,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 23:04:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404767607] [2025-03-08 23:04:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:32,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 23:04:32,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:32,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 23:04:32,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:32,747 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:32,849 INFO L93 Difference]: Finished difference Result 146 states and 163 transitions. [2025-03-08 23:04:32,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:32,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-08 23:04:32,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:32,850 INFO L225 Difference]: With dead ends: 146 [2025-03-08 23:04:32,850 INFO L226 Difference]: Without dead ends: 146 [2025-03-08 23:04:32,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 23:04:32,850 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:32,851 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 286 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-03-08 23:04:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-03-08 23:04:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 105 states have (on average 1.4952380952380953) internal successors, (157), 144 states have internal predecessors, (157), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 163 transitions. [2025-03-08 23:04:32,854 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 163 transitions. Word has length 14 [2025-03-08 23:04:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:32,855 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 163 transitions. [2025-03-08 23:04:32,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:32,855 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 163 transitions. [2025-03-08 23:04:32,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 23:04:32,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:32,855 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:32,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 23:04:32,855 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:32,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:32,856 INFO L85 PathProgramCache]: Analyzing trace with hash 931274519, now seen corresponding path program 1 times [2025-03-08 23:04:32,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:32,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710517878] [2025-03-08 23:04:32,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:32,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 23:04:32,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 23:04:32,867 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:32,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:33,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:33,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710517878] [2025-03-08 23:04:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710517878] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 23:04:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84080445] [2025-03-08 23:04:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:33,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 23:04:33,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:33,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 23:04:33,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:33,003 INFO L87 Difference]: Start difference. First operand 146 states and 163 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:33,122 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2025-03-08 23:04:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:33,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-08 23:04:33,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:33,125 INFO L225 Difference]: With dead ends: 145 [2025-03-08 23:04:33,125 INFO L226 Difference]: Without dead ends: 145 [2025-03-08 23:04:33,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 23:04:33,126 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 2 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:33,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 281 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-03-08 23:04:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2025-03-08 23:04:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 105 states have (on average 1.4761904761904763) internal successors, (155), 143 states have internal predecessors, (155), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2025-03-08 23:04:33,129 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 14 [2025-03-08 23:04:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:33,129 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2025-03-08 23:04:33,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2025-03-08 23:04:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-08 23:04:33,131 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:33,131 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:33,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 23:04:33,131 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:33,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:33,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1865242642, now seen corresponding path program 1 times [2025-03-08 23:04:33,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:33,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542470410] [2025-03-08 23:04:33,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:33,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:33,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 23:04:33,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 23:04:33,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:33,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:33,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:33,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:33,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542470410] [2025-03-08 23:04:33,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542470410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:33,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:33,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 23:04:33,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971069258] [2025-03-08 23:04:33,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:33,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 23:04:33,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:33,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 23:04:33,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 23:04:33,312 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:33,561 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2025-03-08 23:04:33,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 23:04:33,562 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-08 23:04:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:33,562 INFO L225 Difference]: With dead ends: 144 [2025-03-08 23:04:33,562 INFO L226 Difference]: Without dead ends: 144 [2025-03-08 23:04:33,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2025-03-08 23:04:33,563 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 118 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:33,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 212 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 23:04:33,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-03-08 23:04:33,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2025-03-08 23:04:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 105 states have (on average 1.4666666666666666) internal successors, (154), 142 states have internal predecessors, (154), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2025-03-08 23:04:33,566 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 16 [2025-03-08 23:04:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:33,566 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2025-03-08 23:04:33,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2025-03-08 23:04:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-08 23:04:33,566 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:33,567 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:33,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 23:04:33,567 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:33,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:33,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1865242643, now seen corresponding path program 1 times [2025-03-08 23:04:33,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:33,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745589121] [2025-03-08 23:04:33,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:33,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:33,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 23:04:33,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 23:04:33,580 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:33,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745589121] [2025-03-08 23:04:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745589121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:33,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:33,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 23:04:33,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744271434] [2025-03-08 23:04:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:33,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 23:04:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:33,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 23:04:33,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 23:04:33,791 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:34,160 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2025-03-08 23:04:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-08 23:04:34,161 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-03-08 23:04:34,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:34,162 INFO L225 Difference]: With dead ends: 136 [2025-03-08 23:04:34,162 INFO L226 Difference]: Without dead ends: 136 [2025-03-08 23:04:34,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2025-03-08 23:04:34,162 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 126 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:34,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 294 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 23:04:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-08 23:04:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2025-03-08 23:04:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 89 states have (on average 1.449438202247191) internal successors, (129), 118 states have internal predecessors, (129), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2025-03-08 23:04:34,165 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 16 [2025-03-08 23:04:34,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:34,165 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2025-03-08 23:04:34,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,166 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2025-03-08 23:04:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 23:04:34,166 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:34,166 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:34,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 23:04:34,166 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:34,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:34,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1889487081, now seen corresponding path program 1 times [2025-03-08 23:04:34,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:34,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697869651] [2025-03-08 23:04:34,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:34,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:34,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 23:04:34,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 23:04:34,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:34,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:34,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:34,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697869651] [2025-03-08 23:04:34,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697869651] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:34,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:34,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 23:04:34,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782173020] [2025-03-08 23:04:34,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:34,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 23:04:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:34,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 23:04:34,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 23:04:34,303 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:34,507 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2025-03-08 23:04:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 23:04:34,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2025-03-08 23:04:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:34,508 INFO L225 Difference]: With dead ends: 123 [2025-03-08 23:04:34,508 INFO L226 Difference]: Without dead ends: 123 [2025-03-08 23:04:34,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-08 23:04:34,508 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 41 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:34,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 245 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 23:04:34,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-08 23:04:34,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2025-03-08 23:04:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.4382022471910112) internal successors, (128), 117 states have internal predecessors, (128), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2025-03-08 23:04:34,514 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 17 [2025-03-08 23:04:34,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:34,514 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2025-03-08 23:04:34,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2025-03-08 23:04:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 23:04:34,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:34,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 23:04:34,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 23:04:34,515 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:34,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:34,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1889487080, now seen corresponding path program 1 times [2025-03-08 23:04:34,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:34,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174581126] [2025-03-08 23:04:34,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:34,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:34,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 23:04:34,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 23:04:34,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:34,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:34,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:34,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174581126] [2025-03-08 23:04:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174581126] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:34,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:34,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 23:04:34,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428702707] [2025-03-08 23:04:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:34,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 23:04:34,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:34,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 23:04:34,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 23:04:34,722 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:34,954 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2025-03-08 23:04:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 23:04:34,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2025-03-08 23:04:34,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:34,955 INFO L225 Difference]: With dead ends: 122 [2025-03-08 23:04:34,955 INFO L226 Difference]: Without dead ends: 122 [2025-03-08 23:04:34,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-08 23:04:34,955 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 41 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:34,956 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 316 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 23:04:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-03-08 23:04:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2025-03-08 23:04:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 89 states have (on average 1.4269662921348314) internal successors, (127), 116 states have internal predecessors, (127), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2025-03-08 23:04:34,960 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 17 [2025-03-08 23:04:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:34,960 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2025-03-08 23:04:34,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2025-03-08 23:04:34,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-08 23:04:34,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:34,962 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] [2025-03-08 23:04:34,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 23:04:34,962 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:34,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:34,963 INFO L85 PathProgramCache]: Analyzing trace with hash -370267199, now seen corresponding path program 1 times [2025-03-08 23:04:34,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:34,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806543755] [2025-03-08 23:04:34,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:34,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:34,971 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 23:04:34,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 23:04:34,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:34,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:35,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:35,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806543755] [2025-03-08 23:04:35,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806543755] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:35,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:35,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 23:04:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233240347] [2025-03-08 23:04:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:35,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 23:04:35,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:35,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 23:04:35,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:35,029 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:35,109 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2025-03-08 23:04:35,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 23:04:35,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-03-08 23:04:35,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:35,110 INFO L225 Difference]: With dead ends: 121 [2025-03-08 23:04:35,110 INFO L226 Difference]: Without dead ends: 121 [2025-03-08 23:04:35,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-08 23:04:35,111 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 183 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:35,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 70 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:35,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-03-08 23:04:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2025-03-08 23:04:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 89 states have (on average 1.4157303370786516) internal successors, (126), 115 states have internal predecessors, (126), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2025-03-08 23:04:35,113 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 20 [2025-03-08 23:04:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:35,114 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2025-03-08 23:04:35,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2025-03-08 23:04:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 23:04:35,114 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:35,114 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] [2025-03-08 23:04:35,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 23:04:35,114 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:35,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2128595324, now seen corresponding path program 1 times [2025-03-08 23:04:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:35,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544492063] [2025-03-08 23:04:35,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:35,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 23:04:35,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 23:04:35,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:35,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:35,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544492063] [2025-03-08 23:04:35,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544492063] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:35,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:35,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 23:04:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021154205] [2025-03-08 23:04:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:35,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 23:04:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:35,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 23:04:35,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 23:04:35,155 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:35,235 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2025-03-08 23:04:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-03-08 23:04:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:35,236 INFO L225 Difference]: With dead ends: 142 [2025-03-08 23:04:35,236 INFO L226 Difference]: Without dead ends: 142 [2025-03-08 23:04:35,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:35,237 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 109 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:35,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 137 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-03-08 23:04:35,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2025-03-08 23:04:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 89 states have (on average 1.404494382022472) internal successors, (125), 114 states have internal predecessors, (125), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2025-03-08 23:04:35,241 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 22 [2025-03-08 23:04:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:35,241 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2025-03-08 23:04:35,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2025-03-08 23:04:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-08 23:04:35,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:35,242 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] [2025-03-08 23:04:35,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 23:04:35,242 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:35,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:35,242 INFO L85 PathProgramCache]: Analyzing trace with hash -454837244, now seen corresponding path program 1 times [2025-03-08 23:04:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995586075] [2025-03-08 23:04:35,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:35,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 23:04:35,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 23:04:35,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:35,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:35,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:35,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995586075] [2025-03-08 23:04:35,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995586075] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:35,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:35,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 23:04:35,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868201692] [2025-03-08 23:04:35,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:35,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 23:04:35,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:35,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 23:04:35,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2025-03-08 23:04:35,809 INFO L87 Difference]: Start difference. First operand 116 states and 129 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:36,245 INFO L93 Difference]: Finished difference Result 218 states and 243 transitions. [2025-03-08 23:04:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 23:04:36,246 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-03-08 23:04:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:36,247 INFO L225 Difference]: With dead ends: 218 [2025-03-08 23:04:36,247 INFO L226 Difference]: Without dead ends: 218 [2025-03-08 23:04:36,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2025-03-08 23:04:36,249 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 291 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:36,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 550 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 23:04:36,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-03-08 23:04:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 134. [2025-03-08 23:04:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 107 states have (on average 1.355140186915888) internal successors, (145), 132 states have internal predecessors, (145), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2025-03-08 23:04:36,253 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 27 [2025-03-08 23:04:36,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:36,253 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2025-03-08 23:04:36,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2025-03-08 23:04:36,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-08 23:04:36,253 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:36,253 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] [2025-03-08 23:04:36,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 23:04:36,254 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:36,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash -439556383, now seen corresponding path program 1 times [2025-03-08 23:04:36,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:36,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916621223] [2025-03-08 23:04:36,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:36,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:36,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 23:04:36,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 23:04:36,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:36,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916621223] [2025-03-08 23:04:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916621223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 23:04:36,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 23:04:36,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 23:04:36,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021388249] [2025-03-08 23:04:36,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 23:04:36,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 23:04:36,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 23:04:36,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 23:04:36,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 23:04:36,305 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 23:04:36,384 INFO L93 Difference]: Finished difference Result 133 states and 146 transitions. [2025-03-08 23:04:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 23:04:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-03-08 23:04:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 23:04:36,386 INFO L225 Difference]: With dead ends: 133 [2025-03-08 23:04:36,386 INFO L226 Difference]: Without dead ends: 133 [2025-03-08 23:04:36,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-08 23:04:36,387 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 6 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 23:04:36,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 246 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 23:04:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-03-08 23:04:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2025-03-08 23:04:36,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 107 states have (on average 1.3364485981308412) internal successors, (143), 131 states have internal predecessors, (143), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2025-03-08 23:04:36,390 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 27 [2025-03-08 23:04:36,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 23:04:36,390 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2025-03-08 23:04:36,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 23:04:36,390 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2025-03-08 23:04:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-08 23:04:36,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 23:04:36,392 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] [2025-03-08 23:04:36,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 23:04:36,392 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (and 56 more)] === [2025-03-08 23:04:36,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 23:04:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1216855977, now seen corresponding path program 1 times [2025-03-08 23:04:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 23:04:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287877138] [2025-03-08 23:04:36,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 23:04:36,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 23:04:36,409 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 23:04:36,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:36,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:36,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 23:04:36,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287877138] [2025-03-08 23:04:36,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287877138] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 23:04:36,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684473949] [2025-03-08 23:04:36,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 23:04:36,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 23:04:36,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 23:04:36,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 23:04:36,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 23:04:36,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 23:04:36,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 23:04:36,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 23:04:36,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 23:04:36,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 23:04:36,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 23:04:36,923 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-08 23:04:36,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-03-08 23:04:36,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 23:04:37,079 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 23:04:37,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2025-03-08 23:04:37,155 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 23:04:37,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2025-03-08 23:04:37,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-03-08 23:04:37,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 23:04:37,418 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 23:04:37,644 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_59| Int) (v_ArrVal_589 (Array Int Int)) (v_ArrVal_590 (Array Int Int))) (or (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem7#1.base| v_ArrVal_589))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_590)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_59|)) 1) (< |v_ULTIMATE.start_main_~x~0#1.offset_59| 0) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_59|))) is different from false [2025-03-08 23:04:37,661 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_59| Int) (v_ArrVal_589 (Array Int Int)) (v_ArrVal_590 (Array Int Int))) (or (< |v_ULTIMATE.start_main_~x~0#1.offset_59| 0) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_589))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_590)) |c_ULTIMATE.start_main_~head~0#1.base|) |v_ULTIMATE.start_main_~x~0#1.offset_59|)) 1) (< |c_ULTIMATE.start_main_~head~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_59|))) is different from false [2025-03-08 23:04:37,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 23:04:37,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2025-03-08 23:04:37,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 23:04:37,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 131 [2025-03-08 23:04:37,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2025-03-08 23:04:37,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 23:04:37,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 74 [2025-03-08 23:04:49,506 WARN L286 SmtUtils]: Spent 10.19s on a formula simplification that was a NOOP. DAG size: 2179 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2025-03-08 23:04:49,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 23:04:49,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 33 new quantified variables, introduced 528 case distinctions, treesize of input 482 treesize of output 4636