./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext/tree_stack.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/memsafety-ext/tree_stack.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 882715956aab9fc92fb711e54ed51d64e792658e5015ed6151f84b857454f04c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 22:51:28,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 22:51:28,417 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-08 22:51:28,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 22:51:28,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 22:51:28,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 22:51:28,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 22:51:28,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 22:51:28,444 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 22:51:28,444 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 22:51:28,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 22:51:28,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 22:51:28,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 22:51:28,446 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 22:51:28,446 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 22:51:28,447 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:51:28,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 22:51:28,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 22:51:28,447 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 -> 882715956aab9fc92fb711e54ed51d64e792658e5015ed6151f84b857454f04c [2025-03-08 22:51:28,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 22:51:28,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 22:51:28,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 22:51:28,690 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 22:51:28,691 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 22:51:28,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_stack.i [2025-03-08 22:51:29,771 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e17cce36/b94493914e1e4575a34f7d525e0b1cb2/FLAG2dcf7ff56 [2025-03-08 22:51:30,053 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 22:51:30,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_stack.i [2025-03-08 22:51:30,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e17cce36/b94493914e1e4575a34f7d525e0b1cb2/FLAG2dcf7ff56 [2025-03-08 22:51:30,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e17cce36/b94493914e1e4575a34f7d525e0b1cb2 [2025-03-08 22:51:30,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 22:51:30,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 22:51:30,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 22:51:30,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 22:51:30,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 22:51:30,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343a0214 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30, skipping insertion in model container [2025-03-08 22:51:30,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,119 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:51:30,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:51:30,340 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 22:51:30,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:51:30,395 INFO L204 MainTranslator]: Completed translation [2025-03-08 22:51:30,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30 WrapperNode [2025-03-08 22:51:30,395 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 22:51:30,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 22:51:30,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 22:51:30,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 22:51:30,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,424 INFO L138 Inliner]: procedures = 123, calls = 44, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 138 [2025-03-08 22:51:30,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 22:51:30,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 22:51:30,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 22:51:30,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 22:51:30,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,452 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 14 writes are split as follows [0, 14]. [2025-03-08 22:51:30,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,453 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,457 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,459 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,461 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 22:51:30,462 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 22:51:30,462 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 22:51:30,462 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 22:51:30,463 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (1/1) ... [2025-03-08 22:51:30,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:51:30,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:30,488 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 22:51:30,493 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 22:51:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 22:51:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 22:51:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 22:51:30,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 22:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 22:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 22:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 22:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 22:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 22:51:30,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 22:51:30,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 22:51:30,591 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 22:51:30,592 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 22:51:30,979 INFO L? ?]: Removed 157 outVars from TransFormulas that were not future-live. [2025-03-08 22:51:30,979 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 22:51:30,986 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 22:51:30,987 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 22:51:30,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:51:30 BoogieIcfgContainer [2025-03-08 22:51:30,988 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 22:51:30,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 22:51:30,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 22:51:30,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 22:51:30,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:51:30" (1/3) ... [2025-03-08 22:51:30,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd65d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:51:30, skipping insertion in model container [2025-03-08 22:51:30,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:51:30" (2/3) ... [2025-03-08 22:51:30,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd65d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:51:30, skipping insertion in model container [2025-03-08 22:51:30,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:51:30" (3/3) ... [2025-03-08 22:51:30,996 INFO L128 eAbstractionObserver]: Analyzing ICFG tree_stack.i [2025-03-08 22:51:31,005 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 22:51:31,006 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG tree_stack.i that has 1 procedures, 137 locations, 1 initial locations, 3 loop locations, and 67 error locations. [2025-03-08 22:51:31,032 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 22:51:31,042 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;@409f50fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 22:51:31,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2025-03-08 22:51:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 136 states have internal predecessors, (149), 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 22:51:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 22:51:31,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:31,049 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 22:51:31,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr65REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:31,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:31,053 INFO L85 PathProgramCache]: Analyzing trace with hash 180693, now seen corresponding path program 1 times [2025-03-08 22:51:31,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:31,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496808202] [2025-03-08 22:51:31,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:31,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:31,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 22:51:31,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 22:51:31,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:31,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:31,186 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 22:51:31,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:31,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496808202] [2025-03-08 22:51:31,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496808202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:31,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:31,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081068786] [2025-03-08 22:51:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:31,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:31,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:31,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:31,213 INFO L87 Difference]: Start difference. First operand has 137 states, 69 states have (on average 2.1594202898550723) internal successors, (149), 136 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 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 22:51:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:31,334 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2025-03-08 22:51:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:31,337 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 22:51:31,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:31,342 INFO L225 Difference]: With dead ends: 135 [2025-03-08 22:51:31,343 INFO L226 Difference]: Without dead ends: 133 [2025-03-08 22:51:31,345 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 22:51:31,347 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 82 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:31,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 128 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-03-08 22:51:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2025-03-08 22:51:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 68 states have (on average 2.1029411764705883) internal successors, (143), 132 states have internal predecessors, (143), 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 22:51:31,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2025-03-08 22:51:31,372 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 3 [2025-03-08 22:51:31,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:31,373 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2025-03-08 22:51:31,373 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 22:51:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2025-03-08 22:51:31,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 22:51:31,373 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:31,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 22:51:31,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 22:51:31,374 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:31,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 180694, now seen corresponding path program 1 times [2025-03-08 22:51:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318971375] [2025-03-08 22:51:31,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:31,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 22:51:31,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 22:51:31,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:31,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:31,437 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 22:51:31,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318971375] [2025-03-08 22:51:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318971375] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:31,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:31,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:31,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296333370] [2025-03-08 22:51:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:31,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:31,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:31,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:31,439 INFO L87 Difference]: Start difference. First operand 133 states and 143 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 22:51:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:31,534 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2025-03-08 22:51:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:31,534 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 22:51:31,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:31,535 INFO L225 Difference]: With dead ends: 131 [2025-03-08 22:51:31,535 INFO L226 Difference]: Without dead ends: 131 [2025-03-08 22:51:31,535 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 22:51:31,536 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 82 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:31,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 130 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:31,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-03-08 22:51:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2025-03-08 22:51:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 68 states have (on average 2.073529411764706) internal successors, (141), 130 states have internal predecessors, (141), 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 22:51:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2025-03-08 22:51:31,558 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 3 [2025-03-08 22:51:31,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:31,558 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2025-03-08 22:51:31,558 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 22:51:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2025-03-08 22:51:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 22:51:31,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:31,558 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:31,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 22:51:31,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:31,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash -626406356, now seen corresponding path program 1 times [2025-03-08 22:51:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:31,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781442435] [2025-03-08 22:51:31,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:31,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 22:51:31,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 22:51:31,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:31,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:31,642 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 22:51:31,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:31,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781442435] [2025-03-08 22:51:31,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781442435] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:31,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:31,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:51:31,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420061331] [2025-03-08 22:51:31,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:31,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:51:31,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:31,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:51:31,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:51:31,643 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 22:51:31,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:31,784 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2025-03-08 22:51:31,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:31,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 22:51:31,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:31,785 INFO L225 Difference]: With dead ends: 137 [2025-03-08 22:51:31,785 INFO L226 Difference]: Without dead ends: 137 [2025-03-08 22:51:31,785 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 22:51:31,786 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 149 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:31,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 116 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:31,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-03-08 22:51:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 117. [2025-03-08 22:51:31,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 69 states have (on average 1.855072463768116) internal successors, (128), 116 states have internal predecessors, (128), 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 22:51:31,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2025-03-08 22:51:31,792 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 7 [2025-03-08 22:51:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:31,794 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2025-03-08 22:51:31,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 22:51:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2025-03-08 22:51:31,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 22:51:31,794 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:31,794 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:31,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 22:51:31,794 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:31,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash -626406355, now seen corresponding path program 1 times [2025-03-08 22:51:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109155414] [2025-03-08 22:51:31,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:31,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 22:51:31,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 22:51:31,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:31,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:31,918 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 22:51:31,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:31,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109155414] [2025-03-08 22:51:31,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109155414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:31,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:51:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851143848] [2025-03-08 22:51:31,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:31,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:51:31,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:31,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:51:31,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:51:31,920 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 22:51:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,079 INFO L93 Difference]: Finished difference Result 173 states and 191 transitions. [2025-03-08 22:51:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-08 22:51:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,081 INFO L225 Difference]: With dead ends: 173 [2025-03-08 22:51:32,081 INFO L226 Difference]: Without dead ends: 173 [2025-03-08 22:51:32,081 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 22:51:32,081 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 167 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 179 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-08 22:51:32,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 147. [2025-03-08 22:51:32,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 99 states have (on average 1.7171717171717171) internal successors, (170), 146 states have internal predecessors, (170), 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 22:51:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2025-03-08 22:51:32,086 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 7 [2025-03-08 22:51:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,087 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2025-03-08 22:51:32,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 22:51:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2025-03-08 22:51:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 22:51:32,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 22:51:32,087 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2056236217, now seen corresponding path program 1 times [2025-03-08 22:51:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078560332] [2025-03-08 22:51:32,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 22:51:32,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 22:51:32,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:32,121 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 22:51:32,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:32,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078560332] [2025-03-08 22:51:32,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078560332] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:32,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:32,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:32,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662514403] [2025-03-08 22:51:32,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:32,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:32,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:32,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:32,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:32,123 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 22:51:32,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,187 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2025-03-08 22:51:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:32,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-03-08 22:51:32,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,189 INFO L225 Difference]: With dead ends: 147 [2025-03-08 22:51:32,189 INFO L226 Difference]: Without dead ends: 147 [2025-03-08 22:51:32,189 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 22:51:32,190 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 3 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,190 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 179 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2025-03-08 22:51:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2025-03-08 22:51:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 101 states have (on average 1.702970297029703) internal successors, (172), 146 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 172 transitions. [2025-03-08 22:51:32,198 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 172 transitions. Word has length 8 [2025-03-08 22:51:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,198 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 172 transitions. [2025-03-08 22:51:32,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 22:51:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 172 transitions. [2025-03-08 22:51:32,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 22:51:32,198 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,198 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 22:51:32,203 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2056236218, now seen corresponding path program 1 times [2025-03-08 22:51:32,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995553990] [2025-03-08 22:51:32,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 22:51:32,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 22:51:32,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:32,263 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 22:51:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995553990] [2025-03-08 22:51:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995553990] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:32,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:32,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:51:32,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249230710] [2025-03-08 22:51:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:32,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:32,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:32,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:32,264 INFO L87 Difference]: Start difference. First operand 147 states and 172 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 22:51:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,356 INFO L93 Difference]: Finished difference Result 145 states and 169 transitions. [2025-03-08 22:51:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:32,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-03-08 22:51:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,356 INFO L225 Difference]: With dead ends: 145 [2025-03-08 22:51:32,357 INFO L226 Difference]: Without dead ends: 145 [2025-03-08 22:51:32,357 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 22:51:32,357 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 170 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:32,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-03-08 22:51:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2025-03-08 22:51:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 101 states have (on average 1.6732673267326732) internal successors, (169), 144 states have internal predecessors, (169), 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 22:51:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 169 transitions. [2025-03-08 22:51:32,361 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 169 transitions. Word has length 8 [2025-03-08 22:51:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,361 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 169 transitions. [2025-03-08 22:51:32,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 22:51:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 169 transitions. [2025-03-08 22:51:32,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-03-08 22:51:32,361 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,361 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 22:51:32,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1785379043, now seen corresponding path program 1 times [2025-03-08 22:51:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418315984] [2025-03-08 22:51:32,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-08 22:51:32,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-08 22:51:32,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:32,388 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 22:51:32,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:32,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418315984] [2025-03-08 22:51:32,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418315984] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:32,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:32,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:51:32,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014020176] [2025-03-08 22:51:32,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:32,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:32,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:32,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:32,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:32,389 INFO L87 Difference]: Start difference. First operand 145 states and 169 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 22:51:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,404 INFO L93 Difference]: Finished difference Result 145 states and 168 transitions. [2025-03-08 22:51:32,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:32,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2025-03-08 22:51:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,405 INFO L225 Difference]: With dead ends: 145 [2025-03-08 22:51:32,405 INFO L226 Difference]: Without dead ends: 145 [2025-03-08 22:51:32,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:32,406 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 1 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 226 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:51:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2025-03-08 22:51:32,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2025-03-08 22:51:32,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 101 states have (on average 1.6633663366336633) internal successors, (168), 144 states have internal predecessors, (168), 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 22:51:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 168 transitions. [2025-03-08 22:51:32,409 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 168 transitions. Word has length 11 [2025-03-08 22:51:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,409 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 168 transitions. [2025-03-08 22:51:32,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 22:51:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 168 transitions. [2025-03-08 22:51:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 22:51:32,410 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,410 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 22:51:32,410 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2055740230, now seen corresponding path program 1 times [2025-03-08 22:51:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694051810] [2025-03-08 22:51:32,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 22:51:32,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 22:51:32,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:32,465 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 22:51:32,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:32,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694051810] [2025-03-08 22:51:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694051810] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:51:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764826370] [2025-03-08 22:51:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:32,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:51:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:32,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:51:32,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:32,466 INFO L87 Difference]: Start difference. First operand 145 states and 168 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,589 INFO L93 Difference]: Finished difference Result 152 states and 177 transitions. [2025-03-08 22:51:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:32,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 22:51:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,590 INFO L225 Difference]: With dead ends: 152 [2025-03-08 22:51:32,590 INFO L226 Difference]: Without dead ends: 152 [2025-03-08 22:51:32,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:32,590 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 21 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 280 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-03-08 22:51:32,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2025-03-08 22:51:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 103 states have (on average 1.6116504854368932) internal successors, (166), 141 states have internal predecessors, (166), 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 22:51:32,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2025-03-08 22:51:32,598 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 13 [2025-03-08 22:51:32,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,598 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2025-03-08 22:51:32,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2025-03-08 22:51:32,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 22:51:32,599 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,599 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 22:51:32,599 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2055740229, now seen corresponding path program 1 times [2025-03-08 22:51:32,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624494407] [2025-03-08 22:51:32,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 22:51:32,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 22:51:32,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:32,666 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 22:51:32,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:32,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624494407] [2025-03-08 22:51:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624494407] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:32,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:32,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:51:32,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438314061] [2025-03-08 22:51:32,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:32,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:51:32,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:32,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:51:32,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:51:32,668 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,782 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2025-03-08 22:51:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:32,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 22:51:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,783 INFO L225 Difference]: With dead ends: 154 [2025-03-08 22:51:32,783 INFO L226 Difference]: Without dead ends: 154 [2025-03-08 22:51:32,783 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 22:51:32,783 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 20 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 201 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-03-08 22:51:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2025-03-08 22:51:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 114 states have (on average 1.5701754385964912) internal successors, (179), 148 states have internal predecessors, (179), 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 22:51:32,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 179 transitions. [2025-03-08 22:51:32,786 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 179 transitions. Word has length 13 [2025-03-08 22:51:32,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,786 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 179 transitions. [2025-03-08 22:51:32,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:32,786 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 179 transitions. [2025-03-08 22:51:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 22:51:32,786 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,787 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 22:51:32,787 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,787 INFO L85 PathProgramCache]: Analyzing trace with hash 41408232, now seen corresponding path program 1 times [2025-03-08 22:51:32,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607863842] [2025-03-08 22:51:32,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 22:51:32,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 22:51:32,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:32,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:32,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607863842] [2025-03-08 22:51:32,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607863842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:32,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:32,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:51:32,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303261880] [2025-03-08 22:51:32,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:32,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:51:32,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:32,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:51:32,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:32,804 INFO L87 Difference]: Start difference. First operand 149 states and 179 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:51:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,810 INFO L93 Difference]: Finished difference Result 151 states and 181 transitions. [2025-03-08 22:51:32,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:51:32,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:51:32,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,811 INFO L225 Difference]: With dead ends: 151 [2025-03-08 22:51:32,811 INFO L226 Difference]: Without dead ends: 151 [2025-03-08 22:51:32,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:51:32,811 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 0 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:51:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-03-08 22:51:32,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2025-03-08 22:51:32,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 116 states have (on average 1.5603448275862069) internal successors, (181), 150 states have internal predecessors, (181), 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 22:51:32,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 181 transitions. [2025-03-08 22:51:32,814 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 181 transitions. Word has length 14 [2025-03-08 22:51:32,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,814 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 181 transitions. [2025-03-08 22:51:32,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:51:32,814 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 181 transitions. [2025-03-08 22:51:32,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-08 22:51:32,814 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,814 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 22:51:32,815 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash -618502444, now seen corresponding path program 1 times [2025-03-08 22:51:32,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116139712] [2025-03-08 22:51:32,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 22:51:32,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 22:51:32,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:32,862 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 22:51:32,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:32,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116139712] [2025-03-08 22:51:32,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116139712] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:32,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:32,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:51:32,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651854500] [2025-03-08 22:51:32,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:32,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:51:32,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:32,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:51:32,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:32,863 INFO L87 Difference]: Start difference. First operand 151 states and 181 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 22:51:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:32,933 INFO L93 Difference]: Finished difference Result 157 states and 183 transitions. [2025-03-08 22:51:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 22:51:32,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 22:51:32,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:32,933 INFO L225 Difference]: With dead ends: 157 [2025-03-08 22:51:32,933 INFO L226 Difference]: Without dead ends: 157 [2025-03-08 22:51:32,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 22:51:32,934 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 19 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:32,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 289 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-08 22:51:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2025-03-08 22:51:32,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 117 states have (on average 1.5555555555555556) internal successors, (182), 151 states have internal predecessors, (182), 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 22:51:32,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 182 transitions. [2025-03-08 22:51:32,937 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 182 transitions. Word has length 16 [2025-03-08 22:51:32,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:32,937 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 182 transitions. [2025-03-08 22:51:32,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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 22:51:32,937 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 182 transitions. [2025-03-08 22:51:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-08 22:51:32,937 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:32,937 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:32,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 22:51:32,937 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:32,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:32,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1468278730, now seen corresponding path program 1 times [2025-03-08 22:51:32,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:32,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605306110] [2025-03-08 22:51:32,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:32,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 22:51:32,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 22:51:32,952 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:32,952 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:33,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:33,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605306110] [2025-03-08 22:51:33,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605306110] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:33,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:33,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 22:51:33,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338633075] [2025-03-08 22:51:33,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:33,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:51:33,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:33,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:51:33,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:51:33,086 INFO L87 Difference]: Start difference. First operand 152 states and 182 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 22:51:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:33,224 INFO L93 Difference]: Finished difference Result 183 states and 219 transitions. [2025-03-08 22:51:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 22:51:33,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 22:51:33,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:33,225 INFO L225 Difference]: With dead ends: 183 [2025-03-08 22:51:33,225 INFO L226 Difference]: Without dead ends: 183 [2025-03-08 22:51:33,226 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-08 22:51:33,226 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 44 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:33,226 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 431 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-08 22:51:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 166. [2025-03-08 22:51:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 131 states have (on average 1.534351145038168) internal successors, (201), 165 states have internal predecessors, (201), 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 22:51:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 201 transitions. [2025-03-08 22:51:33,229 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 201 transitions. Word has length 16 [2025-03-08 22:51:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:33,229 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 201 transitions. [2025-03-08 22:51:33,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 22:51:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 201 transitions. [2025-03-08 22:51:33,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 22:51:33,229 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:33,229 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:33,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 22:51:33,230 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:33,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1675361519, now seen corresponding path program 1 times [2025-03-08 22:51:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:33,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968489748] [2025-03-08 22:51:33,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:33,237 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 22:51:33,246 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 22:51:33,246 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:33,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:33,504 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 22:51:33,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:33,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968489748] [2025-03-08 22:51:33,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968489748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:33,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:33,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 22:51:33,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549573705] [2025-03-08 22:51:33,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:33,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 22:51:33,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:33,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 22:51:33,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-03-08 22:51:33,505 INFO L87 Difference]: Start difference. First operand 166 states and 201 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:33,896 INFO L93 Difference]: Finished difference Result 183 states and 221 transitions. [2025-03-08 22:51:33,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-08 22:51:33,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-08 22:51:33,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:33,897 INFO L225 Difference]: With dead ends: 183 [2025-03-08 22:51:33,897 INFO L226 Difference]: Without dead ends: 183 [2025-03-08 22:51:33,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2025-03-08 22:51:33,898 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 128 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:33,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 322 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 22:51:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-03-08 22:51:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2025-03-08 22:51:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 136 states have (on average 1.5220588235294117) internal successors, (207), 170 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 207 transitions. [2025-03-08 22:51:33,900 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 207 transitions. Word has length 18 [2025-03-08 22:51:33,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:33,901 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 207 transitions. [2025-03-08 22:51:33,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 207 transitions. [2025-03-08 22:51:33,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 22:51:33,902 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:33,902 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:33,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 22:51:33,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:33,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1675361518, now seen corresponding path program 1 times [2025-03-08 22:51:33,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:33,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238959483] [2025-03-08 22:51:33,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:33,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:33,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 22:51:33,922 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 22:51:33,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:33,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:34,214 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 22:51:34,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238959483] [2025-03-08 22:51:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238959483] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:34,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:34,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 22:51:34,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865841971] [2025-03-08 22:51:34,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:34,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 22:51:34,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:34,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 22:51:34,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-08 22:51:34,215 INFO L87 Difference]: Start difference. First operand 171 states and 207 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:34,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:34,610 INFO L93 Difference]: Finished difference Result 204 states and 238 transitions. [2025-03-08 22:51:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 22:51:34,610 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-08 22:51:34,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:34,611 INFO L225 Difference]: With dead ends: 204 [2025-03-08 22:51:34,611 INFO L226 Difference]: Without dead ends: 204 [2025-03-08 22:51:34,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-03-08 22:51:34,611 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 280 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:34,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 288 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 22:51:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-08 22:51:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 186. [2025-03-08 22:51:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 151 states have (on average 1.4834437086092715) internal successors, (224), 185 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 224 transitions. [2025-03-08 22:51:34,615 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 224 transitions. Word has length 18 [2025-03-08 22:51:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:34,616 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 224 transitions. [2025-03-08 22:51:34,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 224 transitions. [2025-03-08 22:51:34,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 22:51:34,616 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:34,616 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:34,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 22:51:34,616 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:34,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1136843310, now seen corresponding path program 1 times [2025-03-08 22:51:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:34,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037135587] [2025-03-08 22:51:34,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:34,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 22:51:34,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 22:51:34,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:34,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:34,680 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 22:51:34,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:34,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037135587] [2025-03-08 22:51:34,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037135587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:34,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:34,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:51:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470743875] [2025-03-08 22:51:34,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:34,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:51:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:34,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:51:34,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:34,681 INFO L87 Difference]: Start difference. First operand 186 states and 224 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:34,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:34,786 INFO L93 Difference]: Finished difference Result 185 states and 222 transitions. [2025-03-08 22:51:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:34,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-08 22:51:34,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:34,787 INFO L225 Difference]: With dead ends: 185 [2025-03-08 22:51:34,787 INFO L226 Difference]: Without dead ends: 185 [2025-03-08 22:51:34,787 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 22:51:34,788 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 3 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:34,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 269 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-03-08 22:51:34,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2025-03-08 22:51:34,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 151 states have (on average 1.4701986754966887) internal successors, (222), 184 states have internal predecessors, (222), 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 22:51:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 222 transitions. [2025-03-08 22:51:34,791 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 222 transitions. Word has length 18 [2025-03-08 22:51:34,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:34,791 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 222 transitions. [2025-03-08 22:51:34,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:34,791 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 222 transitions. [2025-03-08 22:51:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 22:51:34,791 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:34,791 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:34,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 22:51:34,791 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:34,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:34,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1136843311, now seen corresponding path program 1 times [2025-03-08 22:51:34,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:34,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215205486] [2025-03-08 22:51:34,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:34,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:34,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 22:51:34,802 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 22:51:34,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:34,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:34,891 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 22:51:34,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215205486] [2025-03-08 22:51:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215205486] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:51:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641059340] [2025-03-08 22:51:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:34,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:51:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:34,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:51:34,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:34,892 INFO L87 Difference]: Start difference. First operand 185 states and 222 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:35,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:35,010 INFO L93 Difference]: Finished difference Result 184 states and 220 transitions. [2025-03-08 22:51:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:35,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-08 22:51:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:35,011 INFO L225 Difference]: With dead ends: 184 [2025-03-08 22:51:35,011 INFO L226 Difference]: Without dead ends: 184 [2025-03-08 22:51:35,012 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 22:51:35,012 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 2 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:35,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 251 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:35,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-03-08 22:51:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2025-03-08 22:51:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 151 states have (on average 1.4569536423841059) internal successors, (220), 183 states have internal predecessors, (220), 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 22:51:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2025-03-08 22:51:35,017 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 18 [2025-03-08 22:51:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:35,017 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2025-03-08 22:51:35,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2025-03-08 22:51:35,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 22:51:35,018 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:35,018 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] [2025-03-08 22:51:35,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 22:51:35,018 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:35,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1881983696, now seen corresponding path program 1 times [2025-03-08 22:51:35,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:35,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892283106] [2025-03-08 22:51:35,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:35,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:35,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 22:51:35,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 22:51:35,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:35,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:35,148 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 22:51:35,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:35,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892283106] [2025-03-08 22:51:35,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892283106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:35,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:35,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:51:35,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412298231] [2025-03-08 22:51:35,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:35,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:51:35,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:35,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:51:35,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:51:35,149 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 22:51:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:35,334 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2025-03-08 22:51:35,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:51:35,334 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-03-08 22:51:35,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:35,335 INFO L225 Difference]: With dead ends: 195 [2025-03-08 22:51:35,335 INFO L226 Difference]: Without dead ends: 195 [2025-03-08 22:51:35,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-03-08 22:51:35,335 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 57 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:35,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 223 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2025-03-08 22:51:35,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 183. [2025-03-08 22:51:35,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 151 states have (on average 1.4437086092715232) internal successors, (218), 182 states have internal predecessors, (218), 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 22:51:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 218 transitions. [2025-03-08 22:51:35,340 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 218 transitions. Word has length 21 [2025-03-08 22:51:35,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:35,341 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 218 transitions. [2025-03-08 22:51:35,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 22:51:35,341 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 218 transitions. [2025-03-08 22:51:35,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 22:51:35,341 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:35,341 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] [2025-03-08 22:51:35,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 22:51:35,341 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:35,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1881983697, now seen corresponding path program 1 times [2025-03-08 22:51:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962502381] [2025-03-08 22:51:35,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:35,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:35,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 22:51:35,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 22:51:35,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:35,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:35,509 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 22:51:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962502381] [2025-03-08 22:51:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962502381] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:35,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:51:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359204863] [2025-03-08 22:51:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:35,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:51:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:35,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:51:35,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:51:35,511 INFO L87 Difference]: Start difference. First operand 183 states and 218 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 22:51:35,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:35,777 INFO L93 Difference]: Finished difference Result 194 states and 230 transitions. [2025-03-08 22:51:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:51:35,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-03-08 22:51:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:35,778 INFO L225 Difference]: With dead ends: 194 [2025-03-08 22:51:35,778 INFO L226 Difference]: Without dead ends: 194 [2025-03-08 22:51:35,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-03-08 22:51:35,779 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 53 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:35,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 310 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:51:35,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-03-08 22:51:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2025-03-08 22:51:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 151 states have (on average 1.4304635761589404) internal successors, (216), 181 states have internal predecessors, (216), 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 22:51:35,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2025-03-08 22:51:35,782 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 21 [2025-03-08 22:51:35,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:35,782 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2025-03-08 22:51:35,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 22:51:35,783 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2025-03-08 22:51:35,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 22:51:35,784 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:35,784 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 22:51:35,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 22:51:35,785 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:35,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash 96429260, now seen corresponding path program 1 times [2025-03-08 22:51:35,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:35,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690647747] [2025-03-08 22:51:35,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:35,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:35,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 22:51:35,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 22:51:35,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:35,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:35,842 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 22:51:35,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:35,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690647747] [2025-03-08 22:51:35,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690647747] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:51:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140067103] [2025-03-08 22:51:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:35,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:51:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:35,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:51:35,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:35,844 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22:51:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:35,941 INFO L93 Difference]: Finished difference Result 181 states and 214 transitions. [2025-03-08 22:51:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:35,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2025-03-08 22:51:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:35,943 INFO L225 Difference]: With dead ends: 181 [2025-03-08 22:51:35,943 INFO L226 Difference]: Without dead ends: 181 [2025-03-08 22:51:35,943 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 22:51:35,943 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 3 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:35,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 259 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2025-03-08 22:51:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2025-03-08 22:51:35,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 151 states have (on average 1.4172185430463575) internal successors, (214), 180 states have internal predecessors, (214), 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 22:51:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 214 transitions. [2025-03-08 22:51:35,946 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 214 transitions. Word has length 22 [2025-03-08 22:51:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:35,946 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 214 transitions. [2025-03-08 22:51:35,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22:51:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 214 transitions. [2025-03-08 22:51:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 22:51:35,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:35,948 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 22:51:35,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 22:51:35,948 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:35,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:35,948 INFO L85 PathProgramCache]: Analyzing trace with hash 96429261, now seen corresponding path program 1 times [2025-03-08 22:51:35,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:35,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154943725] [2025-03-08 22:51:35,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:35,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 22:51:35,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 22:51:35,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:35,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:36,048 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 22:51:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154943725] [2025-03-08 22:51:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154943725] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:51:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533490889] [2025-03-08 22:51:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:36,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:51:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:36,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:51:36,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:36,050 INFO L87 Difference]: Start difference. First operand 181 states and 214 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22:51:36,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:36,167 INFO L93 Difference]: Finished difference Result 180 states and 212 transitions. [2025-03-08 22:51:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:36,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2025-03-08 22:51:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:36,168 INFO L225 Difference]: With dead ends: 180 [2025-03-08 22:51:36,168 INFO L226 Difference]: Without dead ends: 180 [2025-03-08 22:51:36,169 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 22:51:36,169 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 2 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:36,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 241 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2025-03-08 22:51:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2025-03-08 22:51:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 151 states have (on average 1.403973509933775) internal successors, (212), 179 states have internal predecessors, (212), 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 22:51:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2025-03-08 22:51:36,176 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 22 [2025-03-08 22:51:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:36,176 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2025-03-08 22:51:36,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22:51:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2025-03-08 22:51:36,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-03-08 22:51:36,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:36,176 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] [2025-03-08 22:51:36,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 22:51:36,176 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:36,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:36,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1774648046, now seen corresponding path program 1 times [2025-03-08 22:51:36,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:36,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32378957] [2025-03-08 22:51:36,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:36,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:36,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 22:51:36,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 22:51:36,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:36,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:36,335 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 22:51:36,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:36,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32378957] [2025-03-08 22:51:36,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32378957] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:36,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:36,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 22:51:36,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561986421] [2025-03-08 22:51:36,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:36,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 22:51:36,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:36,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 22:51:36,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-08 22:51:36,337 INFO L87 Difference]: Start difference. First operand 180 states and 212 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:36,626 INFO L93 Difference]: Finished difference Result 194 states and 228 transitions. [2025-03-08 22:51:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 22:51:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-03-08 22:51:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:36,627 INFO L225 Difference]: With dead ends: 194 [2025-03-08 22:51:36,627 INFO L226 Difference]: Without dead ends: 194 [2025-03-08 22:51:36,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2025-03-08 22:51:36,628 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 163 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:36,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 410 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:51:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2025-03-08 22:51:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2025-03-08 22:51:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 153 states have (on average 1.3986928104575163) internal successors, (214), 181 states have internal predecessors, (214), 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 22:51:36,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2025-03-08 22:51:36,633 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 23 [2025-03-08 22:51:36,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:36,633 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2025-03-08 22:51:36,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:51:36,633 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2025-03-08 22:51:36,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 22:51:36,634 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:36,634 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] [2025-03-08 22:51:36,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 22:51:36,634 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:36,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash -608997736, now seen corresponding path program 1 times [2025-03-08 22:51:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834411414] [2025-03-08 22:51:36,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:36,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:36,644 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 22:51:36,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 22:51:36,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:36,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:36,764 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 22:51:36,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:36,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834411414] [2025-03-08 22:51:36,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834411414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:36,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:36,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:51:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311146952] [2025-03-08 22:51:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:36,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:51:36,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:36,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:51:36,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:51:36,766 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 22:51:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:36,932 INFO L93 Difference]: Finished difference Result 193 states and 227 transitions. [2025-03-08 22:51:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:51:36,935 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 25 [2025-03-08 22:51:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:36,935 INFO L225 Difference]: With dead ends: 193 [2025-03-08 22:51:36,935 INFO L226 Difference]: Without dead ends: 193 [2025-03-08 22:51:36,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-08 22:51:36,937 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 46 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:36,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 212 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:36,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2025-03-08 22:51:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2025-03-08 22:51:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 153 states have (on average 1.392156862745098) internal successors, (213), 180 states have internal predecessors, (213), 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 22:51:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 213 transitions. [2025-03-08 22:51:36,941 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 213 transitions. Word has length 25 [2025-03-08 22:51:36,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:36,941 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 213 transitions. [2025-03-08 22:51:36,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 22:51:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 213 transitions. [2025-03-08 22:51:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 22:51:36,942 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:36,942 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] [2025-03-08 22:51:36,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 22:51:36,942 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:36,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash -608997735, now seen corresponding path program 1 times [2025-03-08 22:51:36,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:36,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095225812] [2025-03-08 22:51:36,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:36,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:36,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 22:51:36,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 22:51:36,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:36,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:37,110 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 22:51:37,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:37,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095225812] [2025-03-08 22:51:37,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095225812] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:37,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:37,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:51:37,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126963098] [2025-03-08 22:51:37,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:37,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:51:37,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:37,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:51:37,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:51:37,113 INFO L87 Difference]: Start difference. First operand 181 states and 213 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 22:51:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:37,307 INFO L93 Difference]: Finished difference Result 192 states and 226 transitions. [2025-03-08 22:51:37,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:51:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 25 [2025-03-08 22:51:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:37,308 INFO L225 Difference]: With dead ends: 192 [2025-03-08 22:51:37,308 INFO L226 Difference]: Without dead ends: 192 [2025-03-08 22:51:37,308 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 22:51:37,308 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 46 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:37,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 259 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:51:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-03-08 22:51:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2025-03-08 22:51:37,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 153 states have (on average 1.3856209150326797) internal successors, (212), 179 states have internal predecessors, (212), 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 22:51:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2025-03-08 22:51:37,311 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 25 [2025-03-08 22:51:37,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:37,311 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2025-03-08 22:51:37,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 22:51:37,311 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2025-03-08 22:51:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 22:51:37,311 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:37,311 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] [2025-03-08 22:51:37,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-08 22:51:37,311 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:37,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1787517775, now seen corresponding path program 1 times [2025-03-08 22:51:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:37,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802088948] [2025-03-08 22:51:37,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:37,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 22:51:37,326 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 22:51:37,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:37,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:37,541 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 22:51:37,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:37,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802088948] [2025-03-08 22:51:37,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802088948] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:51:37,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131390127] [2025-03-08 22:51:37,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:37,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:37,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:37,544 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 22:51:37,546 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 22:51:37,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 22:51:37,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 22:51:37,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:37,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:37,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 22:51:37,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:51:37,800 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-08 22:51:37,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:51:37,867 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 40 treesize of output 30 [2025-03-08 22:51:37,994 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-03-08 22:51:37,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 29 [2025-03-08 22:51:38,151 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 22:51:38,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:51:38,331 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 41 treesize of output 37 [2025-03-08 22:51:38,333 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 68 treesize of output 64 [2025-03-08 22:51:38,490 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 22:51:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131390127] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:51:38,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:51:38,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 29 [2025-03-08 22:51:38,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696945557] [2025-03-08 22:51:38,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:51:38,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-03-08 22:51:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:38,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-03-08 22:51:38,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2025-03-08 22:51:38,492 INFO L87 Difference]: Start difference. First operand 180 states and 212 transitions. Second operand has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 states have internal predecessors, (67), 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 22:51:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:39,074 INFO L93 Difference]: Finished difference Result 224 states and 259 transitions. [2025-03-08 22:51:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 22:51:39,074 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 states have internal predecessors, (67), 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 26 [2025-03-08 22:51:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:39,075 INFO L225 Difference]: With dead ends: 224 [2025-03-08 22:51:39,075 INFO L226 Difference]: Without dead ends: 223 [2025-03-08 22:51:39,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2025-03-08 22:51:39,076 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 83 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:39,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 700 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 22:51:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-03-08 22:51:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 199. [2025-03-08 22:51:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 172 states have (on average 1.3546511627906976) internal successors, (233), 198 states have internal predecessors, (233), 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 22:51:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2025-03-08 22:51:39,079 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 26 [2025-03-08 22:51:39,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:39,079 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2025-03-08 22:51:39,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.310344827586207) internal successors, (67), 30 states have internal predecessors, (67), 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 22:51:39,080 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2025-03-08 22:51:39,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-08 22:51:39,080 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:39,080 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:39,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 22:51:39,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-08 22:51:39,281 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:39,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:39,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1787516143, now seen corresponding path program 1 times [2025-03-08 22:51:39,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:39,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828232695] [2025-03-08 22:51:39,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:39,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:39,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 22:51:39,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 22:51:39,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:39,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:39,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828232695] [2025-03-08 22:51:39,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828232695] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:51:39,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094522004] [2025-03-08 22:51:39,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:39,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:39,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:39,369 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:51:39,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 22:51:39,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 22:51:39,448 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 22:51:39,448 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:39,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:39,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 22:51:39,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:51:39,476 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 22:51:39,480 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 22:51:39,486 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-03-08 22:51:39,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-03-08 22:51:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:39,532 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:51:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:39,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094522004] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:51:39,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:51:39,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-03-08 22:51:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568587089] [2025-03-08 22:51:39,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:51:39,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:51:39,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:39,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:51:39,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:39,573 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 22:51:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:39,626 INFO L93 Difference]: Finished difference Result 202 states and 235 transitions. [2025-03-08 22:51:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:39,627 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), 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 26 [2025-03-08 22:51:39,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:39,627 INFO L225 Difference]: With dead ends: 202 [2025-03-08 22:51:39,627 INFO L226 Difference]: Without dead ends: 198 [2025-03-08 22:51:39,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:51:39,628 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 2 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:39,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 354 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-03-08 22:51:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2025-03-08 22:51:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 170 states have (on average 1.3529411764705883) internal successors, (230), 196 states have internal predecessors, (230), 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 22:51:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 230 transitions. [2025-03-08 22:51:39,631 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 230 transitions. Word has length 26 [2025-03-08 22:51:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:39,631 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 230 transitions. [2025-03-08 22:51:39,631 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), 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 22:51:39,632 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 230 transitions. [2025-03-08 22:51:39,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-08 22:51:39,632 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:39,632 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:39,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 22:51:39,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-03-08 22:51:39,833 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:39,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash 832354774, now seen corresponding path program 1 times [2025-03-08 22:51:39,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:39,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046736330] [2025-03-08 22:51:39,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:39,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:39,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-08 22:51:39,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 22:51:39,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:39,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:39,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:39,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:39,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046736330] [2025-03-08 22:51:39,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046736330] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:39,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:39,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:51:39,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286402849] [2025-03-08 22:51:39,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:39,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:51:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:39,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:51:39,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:51:39,869 INFO L87 Difference]: Start difference. First operand 197 states and 230 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 22:51:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:39,906 INFO L93 Difference]: Finished difference Result 204 states and 232 transitions. [2025-03-08 22:51:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:51:39,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2025-03-08 22:51:39,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:39,907 INFO L225 Difference]: With dead ends: 204 [2025-03-08 22:51:39,907 INFO L226 Difference]: Without dead ends: 204 [2025-03-08 22:51:39,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:51:39,907 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:39,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 266 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:51:39,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2025-03-08 22:51:39,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 197. [2025-03-08 22:51:39,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 170 states have (on average 1.3470588235294119) internal successors, (229), 196 states have internal predecessors, (229), 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 22:51:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2025-03-08 22:51:39,912 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 30 [2025-03-08 22:51:39,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:39,912 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2025-03-08 22:51:39,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 22:51:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2025-03-08 22:51:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-08 22:51:39,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:39,912 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:39,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-08 22:51:39,912 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:39,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:39,913 INFO L85 PathProgramCache]: Analyzing trace with hash 832356406, now seen corresponding path program 1 times [2025-03-08 22:51:39,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:39,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157104639] [2025-03-08 22:51:39,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:39,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:39,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-08 22:51:39,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-08 22:51:39,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:39,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:39,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:39,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157104639] [2025-03-08 22:51:39,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157104639] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:39,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:39,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 22:51:39,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244832527] [2025-03-08 22:51:39,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:39,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:51:39,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:39,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:51:39,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:51:39,987 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 22:51:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:40,174 INFO L93 Difference]: Finished difference Result 222 states and 252 transitions. [2025-03-08 22:51:40,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:51:40,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 30 [2025-03-08 22:51:40,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:40,175 INFO L225 Difference]: With dead ends: 222 [2025-03-08 22:51:40,175 INFO L226 Difference]: Without dead ends: 222 [2025-03-08 22:51:40,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-03-08 22:51:40,176 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 71 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:40,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 188 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:51:40,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-03-08 22:51:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 197. [2025-03-08 22:51:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 170 states have (on average 1.3411764705882352) internal successors, (228), 196 states have internal predecessors, (228), 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 22:51:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 228 transitions. [2025-03-08 22:51:40,179 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 228 transitions. Word has length 30 [2025-03-08 22:51:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:40,179 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 228 transitions. [2025-03-08 22:51:40,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 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 22:51:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 228 transitions. [2025-03-08 22:51:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-03-08 22:51:40,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:40,180 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:40,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-08 22:51:40,180 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:40,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:40,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1030589747, now seen corresponding path program 1 times [2025-03-08 22:51:40,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:40,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609381701] [2025-03-08 22:51:40,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:40,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:40,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-08 22:51:40,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-08 22:51:40,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:40,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 22:51:40,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:40,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609381701] [2025-03-08 22:51:40,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609381701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:40,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:40,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:51:40,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414085635] [2025-03-08 22:51:40,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:40,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:51:40,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:40,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:51:40,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:51:40,221 INFO L87 Difference]: Start difference. First operand 197 states and 228 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 22:51:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:40,311 INFO L93 Difference]: Finished difference Result 196 states and 226 transitions. [2025-03-08 22:51:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 22:51:40,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2025-03-08 22:51:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:40,312 INFO L225 Difference]: With dead ends: 196 [2025-03-08 22:51:40,313 INFO L226 Difference]: Without dead ends: 196 [2025-03-08 22:51:40,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:51:40,314 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 13 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:40,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 188 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:51:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-03-08 22:51:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2025-03-08 22:51:40,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 170 states have (on average 1.3294117647058823) internal successors, (226), 195 states have internal predecessors, (226), 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 22:51:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 226 transitions. [2025-03-08 22:51:40,319 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 226 transitions. Word has length 32 [2025-03-08 22:51:40,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:40,319 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 226 transitions. [2025-03-08 22:51:40,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 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 22:51:40,320 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 226 transitions. [2025-03-08 22:51:40,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 22:51:40,320 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:40,320 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:40,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-08 22:51:40,320 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:40,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 301055544, now seen corresponding path program 1 times [2025-03-08 22:51:40,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:40,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23679813] [2025-03-08 22:51:40,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:40,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:40,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 22:51:40,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 22:51:40,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:40,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:40,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:40,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23679813] [2025-03-08 22:51:40,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23679813] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:40,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:40,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-08 22:51:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398724313] [2025-03-08 22:51:40,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:40,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 22:51:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:40,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 22:51:40,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2025-03-08 22:51:40,736 INFO L87 Difference]: Start difference. First operand 196 states and 226 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 22:51:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:41,220 INFO L93 Difference]: Finished difference Result 225 states and 256 transitions. [2025-03-08 22:51:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 22:51:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-03-08 22:51:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:41,221 INFO L225 Difference]: With dead ends: 225 [2025-03-08 22:51:41,221 INFO L226 Difference]: Without dead ends: 214 [2025-03-08 22:51:41,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2025-03-08 22:51:41,222 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 146 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:41,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 555 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 22:51:41,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2025-03-08 22:51:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 196. [2025-03-08 22:51:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 170 states have (on average 1.3235294117647058) internal successors, (225), 195 states have internal predecessors, (225), 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 22:51:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 225 transitions. [2025-03-08 22:51:41,227 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 225 transitions. Word has length 37 [2025-03-08 22:51:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:41,227 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 225 transitions. [2025-03-08 22:51:41,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 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 22:51:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 225 transitions. [2025-03-08 22:51:41,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-03-08 22:51:41,228 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:41,228 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:41,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-08 22:51:41,228 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:41,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1657197128, now seen corresponding path program 1 times [2025-03-08 22:51:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240100179] [2025-03-08 22:51:41,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:41,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:41,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 22:51:41,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 22:51:41,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:41,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:41,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:41,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240100179] [2025-03-08 22:51:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240100179] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:51:41,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:51:41,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-08 22:51:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408238931] [2025-03-08 22:51:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:51:41,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-08 22:51:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:51:41,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-08 22:51:41,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-03-08 22:51:41,712 INFO L87 Difference]: Start difference. First operand 196 states and 225 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 22:51:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:51:42,164 INFO L93 Difference]: Finished difference Result 225 states and 257 transitions. [2025-03-08 22:51:42,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 22:51:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-03-08 22:51:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:51:42,165 INFO L225 Difference]: With dead ends: 225 [2025-03-08 22:51:42,165 INFO L226 Difference]: Without dead ends: 202 [2025-03-08 22:51:42,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2025-03-08 22:51:42,166 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 156 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:51:42,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 536 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 22:51:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2025-03-08 22:51:42,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 181. [2025-03-08 22:51:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 155 states have (on average 1.3483870967741935) internal successors, (209), 180 states have internal predecessors, (209), 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 22:51:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 209 transitions. [2025-03-08 22:51:42,169 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 209 transitions. Word has length 37 [2025-03-08 22:51:42,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:51:42,170 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 209 transitions. [2025-03-08 22:51:42,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 22:51:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 209 transitions. [2025-03-08 22:51:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 22:51:42,170 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:51:42,170 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:51:42,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-08 22:51:42,170 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:51:42,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:51:42,171 INFO L85 PathProgramCache]: Analyzing trace with hash -747934828, now seen corresponding path program 1 times [2025-03-08 22:51:42,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:51:42,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184441447] [2025-03-08 22:51:42,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:42,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:51:42,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:51:42,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:51:42,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:42,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:42,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:51:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184441447] [2025-03-08 22:51:42,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184441447] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:51:42,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320916054] [2025-03-08 22:51:42,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:51:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:51:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:51:42,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:51:42,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 22:51:42,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:51:42,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:51:42,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:51:42,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:51:42,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 22:51:42,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:51:42,542 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-08 22:51:42,543 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 22:51:42,576 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 22:51:42,647 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:51:42,647 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 22:51:42,694 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:51:42,694 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 22:51:42,777 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 22:51:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:51:42,812 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:51:42,838 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_917 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_917) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-03-08 22:51:42,859 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_917 (Array Int Int)) (v_ArrVal_916 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_916))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_917)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-03-08 22:51:42,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:51:42,899 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 22:51:42,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:51:42,906 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 252 treesize of output 227 [2025-03-08 22:51:42,912 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 171 treesize of output 163 [2025-03-08 22:51:42,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:51:42,921 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 163 treesize of output 159 [2025-03-08 22:51:44,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:51:44,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 150 treesize of output 748 [2025-03-08 22:52:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:16,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320916054] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:52:16,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:52:16,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 26 [2025-03-08 22:52:16,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479196845] [2025-03-08 22:52:16,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:52:16,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-08 22:52:16,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:52:16,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-08 22:52:16,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=475, Unknown=14, NotChecked=94, Total=702 [2025-03-08 22:52:16,575 INFO L87 Difference]: Start difference. First operand 181 states and 209 transitions. Second operand has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 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 22:52:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:52:17,220 INFO L93 Difference]: Finished difference Result 272 states and 322 transitions. [2025-03-08 22:52:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-08 22:52:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 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 38 [2025-03-08 22:52:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:52:17,222 INFO L225 Difference]: With dead ends: 272 [2025-03-08 22:52:17,222 INFO L226 Difference]: Without dead ends: 272 [2025-03-08 22:52:17,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=680, Unknown=14, NotChecked=114, Total=992 [2025-03-08 22:52:17,222 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 385 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 487 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 22:52:17,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 792 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1047 Invalid, 0 Unknown, 487 Unchecked, 0.6s Time] [2025-03-08 22:52:17,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2025-03-08 22:52:17,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 223. [2025-03-08 22:52:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 197 states have (on average 1.3908629441624365) internal successors, (274), 222 states have internal predecessors, (274), 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 22:52:17,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 274 transitions. [2025-03-08 22:52:17,227 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 274 transitions. Word has length 38 [2025-03-08 22:52:17,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:52:17,227 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 274 transitions. [2025-03-08 22:52:17,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.076923076923077) internal successors, (80), 27 states have internal predecessors, (80), 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 22:52:17,227 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 274 transitions. [2025-03-08 22:52:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 22:52:17,227 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:17,228 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:52:17,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 22:52:17,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:17,429 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:52:17,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:17,429 INFO L85 PathProgramCache]: Analyzing trace with hash -747934827, now seen corresponding path program 1 times [2025-03-08 22:52:17,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:17,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115405630] [2025-03-08 22:52:17,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:17,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:17,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:52:17,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:52:17,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:17,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:17,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:52:17,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115405630] [2025-03-08 22:52:17,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115405630] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:52:17,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854288875] [2025-03-08 22:52:17,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:17,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:17,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:17,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:52:17,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 22:52:17,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:52:17,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:52:17,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:17,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:17,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-08 22:52:17,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:52:17,912 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:52:17,912 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 11 treesize of output 11 [2025-03-08 22:52:17,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-03-08 22:52:17,938 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-08 22:52:17,942 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 22:52:17,997 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:52:17,997 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 50 treesize of output 45 [2025-03-08 22:52:18,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-03-08 22:52:18,042 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:52:18,042 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 50 treesize of output 45 [2025-03-08 22:52:18,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-03-08 22:52:18,125 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 22:52:18,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-08 22:52:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:18,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:52:18,260 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_993 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_993) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))) (forall ((v_ArrVal_993 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_993) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))) is different from false [2025-03-08 22:52:18,267 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (and (forall ((v_ArrVal_993 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_993) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_994) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))) (forall ((v_ArrVal_993 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_993) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))) is different from false [2025-03-08 22:52:18,333 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (and (forall ((v_ArrVal_991 (Array Int Int)) (v_ArrVal_993 (Array Int Int)) (v_ArrVal_992 (Array Int Int)) (v_ArrVal_994 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_991))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_992) .cse1 v_ArrVal_993) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_994) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)))))) (forall ((v_ArrVal_991 (Array Int Int)) (v_ArrVal_993 (Array Int Int)) (v_ArrVal_992 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_992) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_991) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_993) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))) is different from false [2025-03-08 22:52:18,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,350 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 73 treesize of output 74 [2025-03-08 22:52:18,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,357 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 65 treesize of output 50 [2025-03-08 22:52:18,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,370 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 632 treesize of output 567 [2025-03-08 22:52:18,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,387 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 1127 treesize of output 1070 [2025-03-08 22:52:18,405 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 547 treesize of output 523 [2025-03-08 22:52:18,410 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 523 treesize of output 499 [2025-03-08 22:52:18,416 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 499 treesize of output 491 [2025-03-08 22:52:18,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,426 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 491 treesize of output 447 [2025-03-08 22:52:18,538 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,538 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2025-03-08 22:52:18,543 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,543 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2025-03-08 22:52:18,545 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:52:18,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2025-03-08 22:52:18,548 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:52:18,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2025-03-08 22:52:18,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:18,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 46 [2025-03-08 22:52:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854288875] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:52:18,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:52:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 30 [2025-03-08 22:52:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037546121] [2025-03-08 22:52:18,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:52:18,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-08 22:52:18,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:52:18,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-08 22:52:18,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=620, Unknown=25, NotChecked=162, Total=930 [2025-03-08 22:52:18,664 INFO L87 Difference]: Start difference. First operand 223 states and 274 transitions. Second operand has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 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 22:52:19,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:52:19,545 INFO L93 Difference]: Finished difference Result 309 states and 367 transitions. [2025-03-08 22:52:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 22:52:19,546 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 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 38 [2025-03-08 22:52:19,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:52:19,547 INFO L225 Difference]: With dead ends: 309 [2025-03-08 22:52:19,547 INFO L226 Difference]: Without dead ends: 309 [2025-03-08 22:52:19,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=256, Invalid=1129, Unknown=33, NotChecked=222, Total=1640 [2025-03-08 22:52:19,549 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 476 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 815 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 22:52:19,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1034 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1201 Invalid, 0 Unknown, 815 Unchecked, 0.6s Time] [2025-03-08 22:52:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2025-03-08 22:52:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 237. [2025-03-08 22:52:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 215 states have (on average 1.3488372093023255) internal successors, (290), 236 states have internal predecessors, (290), 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 22:52:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 290 transitions. [2025-03-08 22:52:19,555 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 290 transitions. Word has length 38 [2025-03-08 22:52:19,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:52:19,555 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 290 transitions. [2025-03-08 22:52:19,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 31 states have internal predecessors, (95), 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 22:52:19,555 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 290 transitions. [2025-03-08 22:52:19,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 22:52:19,555 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:19,556 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:52:19,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-08 22:52:19,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:19,760 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:52:19,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:19,760 INFO L85 PathProgramCache]: Analyzing trace with hash -747780913, now seen corresponding path program 1 times [2025-03-08 22:52:19,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:19,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548880361] [2025-03-08 22:52:19,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:19,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:19,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:52:19,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:52:19,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:19,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:20,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:52:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548880361] [2025-03-08 22:52:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548880361] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:52:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287569998] [2025-03-08 22:52:20,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:20,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:20,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:20,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:52:20,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 22:52:20,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:52:20,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:52:20,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:20,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:20,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-08 22:52:20,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:52:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:20,539 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:52:20,621 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2025-03-08 22:52:20,621 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 30 treesize of output 25 [2025-03-08 22:52:20,627 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2025-03-08 22:52:20,627 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 24 treesize of output 12 [2025-03-08 22:52:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:20,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287569998] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:52:20,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:52:20,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 27 [2025-03-08 22:52:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550776299] [2025-03-08 22:52:20,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:52:20,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-08 22:52:20,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:52:20,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-08 22:52:20,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2025-03-08 22:52:20,661 INFO L87 Difference]: Start difference. First operand 237 states and 290 transitions. Second operand has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 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 22:52:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:52:21,582 INFO L93 Difference]: Finished difference Result 382 states and 469 transitions. [2025-03-08 22:52:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-03-08 22:52:21,583 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 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 38 [2025-03-08 22:52:21,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:52:21,584 INFO L225 Difference]: With dead ends: 382 [2025-03-08 22:52:21,584 INFO L226 Difference]: Without dead ends: 382 [2025-03-08 22:52:21,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=649, Invalid=2431, Unknown=0, NotChecked=0, Total=3080 [2025-03-08 22:52:21,585 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 441 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 22:52:21,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 915 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 22:52:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2025-03-08 22:52:21,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 267. [2025-03-08 22:52:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 245 states have (on average 1.3306122448979592) internal successors, (326), 266 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:52:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 326 transitions. [2025-03-08 22:52:21,589 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 326 transitions. Word has length 38 [2025-03-08 22:52:21,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:52:21,589 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 326 transitions. [2025-03-08 22:52:21,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 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 22:52:21,589 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 326 transitions. [2025-03-08 22:52:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 22:52:21,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:21,590 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:52:21,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 22:52:21,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-03-08 22:52:21,791 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:52:21,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1262455788, now seen corresponding path program 1 times [2025-03-08 22:52:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:21,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427638264] [2025-03-08 22:52:21,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:21,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:52:21,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:52:21,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:21,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:22,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:52:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427638264] [2025-03-08 22:52:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427638264] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:52:22,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314629358] [2025-03-08 22:52:22,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:22,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:22,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:22,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:52:22,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 22:52:22,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:52:22,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:52:22,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:22,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:22,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-08 22:52:22,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:52:22,267 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:52:22,267 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 11 treesize of output 11 [2025-03-08 22:52:22,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:52:22,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-03-08 22:52:22,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:52:22,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-03-08 22:52:22,313 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:52:22,313 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 58 treesize of output 53 [2025-03-08 22:52:22,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 11 [2025-03-08 22:52:22,362 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:52:22,362 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 58 treesize of output 53 [2025-03-08 22:52:22,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 11 [2025-03-08 22:52:22,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:22,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:52:22,419 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1136 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1136) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1137 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_1137) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))) is different from false [2025-03-08 22:52:22,426 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)))) (and (forall ((v_ArrVal_1137 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1137) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1136 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1136) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)))) is different from false [2025-03-08 22:52:22,477 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1137 (Array Int Int)) (v_ArrVal_1134 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_1134))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1137)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1136 (Array Int Int)) (v_ArrVal_1135 (Array Int Int)) (v_ArrVal_1134 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse2 v_ArrVal_1135) (select (select (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_1134) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1136) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))))) is different from false [2025-03-08 22:52:22,506 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 |c_ULTIMATE.start_main_#t~malloc20#1.base|)))) (and (forall ((v_ArrVal_1137 (Array Int Int)) (v_ArrVal_1134 (Array Int Int))) (= (select (select (let ((.cse0 (store .cse2 |c_ULTIMATE.start_main_#t~malloc20#1.base| v_ArrVal_1134))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1137)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0)) (forall ((v_ArrVal_1136 (Array Int Int)) (v_ArrVal_1135 (Array Int Int)) (|ULTIMATE.start_main_#t~malloc20#1.offset| Int) (v_ArrVal_1134 (Array Int Int))) (= (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1 |ULTIMATE.start_main_#t~malloc20#1.offset|)) |c_ULTIMATE.start_main_#t~malloc20#1.base| v_ArrVal_1135) (select (select (store .cse2 |c_ULTIMATE.start_main_#t~malloc20#1.base| v_ArrVal_1134) |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_1136) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 0))))) is different from false [2025-03-08 22:52:22,733 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:22,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 112 [2025-03-08 22:52:22,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:22,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 109 [2025-03-08 22:52:22,774 INFO L349 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2025-03-08 22:52:22,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 457 treesize of output 303 [2025-03-08 22:52:22,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 240 treesize of output 218 [2025-03-08 22:52:22,798 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2025-03-08 22:52:22,798 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 355 treesize of output 339 [2025-03-08 22:52:22,806 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 260 treesize of output 258 [2025-03-08 22:52:22,811 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 258 treesize of output 252 [2025-03-08 22:52:22,815 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 252 treesize of output 244 [2025-03-08 22:52:22,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:22,826 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 244 treesize of output 235 [2025-03-08 22:52:22,831 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 224 treesize of output 216 [2025-03-08 22:52:22,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:22,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 223 treesize of output 241 [2025-03-08 22:52:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:22,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314629358] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:52:22,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:52:22,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 26 [2025-03-08 22:52:22,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259128218] [2025-03-08 22:52:22,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:52:22,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-03-08 22:52:22,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:52:22,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-03-08 22:52:22,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=375, Unknown=18, NotChecked=172, Total=650 [2025-03-08 22:52:22,905 INFO L87 Difference]: Start difference. First operand 267 states and 326 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 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 22:52:23,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:52:23,493 INFO L93 Difference]: Finished difference Result 379 states and 466 transitions. [2025-03-08 22:52:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-08 22:52:23,493 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 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 38 [2025-03-08 22:52:23,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:52:23,494 INFO L225 Difference]: With dead ends: 379 [2025-03-08 22:52:23,494 INFO L226 Difference]: Without dead ends: 379 [2025-03-08 22:52:23,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=216, Invalid=708, Unknown=22, NotChecked=244, Total=1190 [2025-03-08 22:52:23,495 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 103 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 625 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 22:52:23,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 912 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 748 Invalid, 0 Unknown, 625 Unchecked, 0.4s Time] [2025-03-08 22:52:23,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2025-03-08 22:52:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 301. [2025-03-08 22:52:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 300 states have internal predecessors, (369), 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 22:52:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 369 transitions. [2025-03-08 22:52:23,502 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 369 transitions. Word has length 38 [2025-03-08 22:52:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:52:23,503 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 369 transitions. [2025-03-08 22:52:23,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 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 22:52:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 369 transitions. [2025-03-08 22:52:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-03-08 22:52:23,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:52:23,504 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:52:23,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 22:52:23,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:23,704 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 64 more)] === [2025-03-08 22:52:23,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:52:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash -510586549, now seen corresponding path program 1 times [2025-03-08 22:52:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:52:23,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917090549] [2025-03-08 22:52:23,705 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:23,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:52:23,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-08 22:52:23,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 22:52:23,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:23,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:52:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917090549] [2025-03-08 22:52:24,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917090549] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:52:24,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862334395] [2025-03-08 22:52:24,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:52:24,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:52:24,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:52:24,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 22:52:24,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 22:52:24,170 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-08 22:52:24,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-08 22:52:24,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:52:24,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:52:24,200 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-08 22:52:24,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:52:24,234 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-08 22:52:24,234 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 22:52:24,262 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 22:52:24,287 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:52:24,287 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 22:52:24,326 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:52:24,326 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 22:52:24,380 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2025-03-08 22:52:24,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2025-03-08 22:52:24,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-08 22:52:24,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2025-03-08 22:52:24,483 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:52:24,484 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 62 treesize of output 55 [2025-03-08 22:52:24,537 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:52:24,538 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 73 treesize of output 64 [2025-03-08 22:52:24,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:24,666 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 60 treesize of output 26 [2025-03-08 22:52:24,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:52:24,739 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:52:24,889 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc20#1.base_12| Int) (v_ArrVal_1250 Int) (v_ArrVal_1254 (Array Int Int)) (v_ArrVal_1253 (Array Int Int))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse2 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse3 |v_ULTIMATE.start_main_#t~malloc20#1.base_12|)) |v_ULTIMATE.start_main_#t~malloc20#1.base_12| v_ArrVal_1253))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_12| v_ArrVal_1250)) (.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse3))) (or (not (= (select .cse0 .cse1) 1)) (= (select .cse0 (select (select (store .cse2 .cse1 v_ArrVal_1254) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc20#1.base_12|) 0))))))) is different from false [2025-03-08 22:52:25,115 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:52:25,138 INFO L349 Elim1Store]: treesize reduction 15, result has 64.3 percent of original size [2025-03-08 22:52:25,138 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 2 case distinctions, treesize of input 231960 treesize of output 198178 [2025-03-08 22:52:25,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:25,169 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 1004 treesize of output 964 [2025-03-08 22:52:25,183 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 758 treesize of output 738 [2025-03-08 22:52:25,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:25,201 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 714 treesize of output 692 [2025-03-08 22:52:25,215 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 656 treesize of output 640 [2025-03-08 22:52:25,232 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 6 treesize of output 4 [2025-03-08 22:52:26,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:52:26,073 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 711 treesize of output 703