./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext/tree_cnstr.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_cnstr.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 ba983053090b7e7410066c63fe0cfe9ad27960a7dc19d54045684ba21359c88d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 22:50:19,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 22:50:19,318 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-08 22:50:19,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 22:50:19,324 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 22:50:19,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 22:50:19,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 22:50:19,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 22:50:19,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 22:50:19,342 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 22:50:19,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 22:50:19,342 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 22:50:19,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 22:50:19,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 22:50:19,343 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 22:50:19,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 22:50:19,343 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 22:50:19,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 22:50:19,344 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 22:50:19,345 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:50:19,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 22:50:19,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 22:50:19,345 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 -> ba983053090b7e7410066c63fe0cfe9ad27960a7dc19d54045684ba21359c88d [2025-03-08 22:50:19,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 22:50:19,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 22:50:19,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 22:50:19,569 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 22:50:19,569 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 22:50:19,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2025-03-08 22:50:20,633 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a77e75f/a2829e0b16084b12a3ecf319fc68d86a/FLAG8d331433e [2025-03-08 22:50:20,850 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 22:50:20,850 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext/tree_cnstr.i [2025-03-08 22:50:20,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a77e75f/a2829e0b16084b12a3ecf319fc68d86a/FLAG8d331433e [2025-03-08 22:50:21,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a77e75f/a2829e0b16084b12a3ecf319fc68d86a [2025-03-08 22:50:21,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 22:50:21,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 22:50:21,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 22:50:21,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 22:50:21,198 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 22:50:21,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,199 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c12871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21, skipping insertion in model container [2025-03-08 22:50:21,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,223 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 22:50:21,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:50:21,445 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 22:50:21,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 22:50:21,499 INFO L204 MainTranslator]: Completed translation [2025-03-08 22:50:21,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21 WrapperNode [2025-03-08 22:50:21,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 22:50:21,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 22:50:21,500 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 22:50:21,500 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 22:50:21,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,531 INFO L138 Inliner]: procedures = 123, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 131 [2025-03-08 22:50:21,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 22:50:21,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 22:50:21,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 22:50:21,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 22:50:21,539 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,561 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 10 writes are split as follows [0, 10]. [2025-03-08 22:50:21,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,571 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,572 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 22:50:21,579 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 22:50:21,579 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 22:50:21,579 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 22:50:21,581 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (1/1) ... [2025-03-08 22:50:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 22:50:21,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:21,606 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 22:50:21,609 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 22:50:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 22:50:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 22:50:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 22:50:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 22:50:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 22:50:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 22:50:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 22:50:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 22:50:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 22:50:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 22:50:21,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 22:50:21,713 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 22:50:21,715 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 22:50:22,034 INFO L? ?]: Removed 143 outVars from TransFormulas that were not future-live. [2025-03-08 22:50:22,035 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 22:50:22,046 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 22:50:22,046 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 22:50:22,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:50:22 BoogieIcfgContainer [2025-03-08 22:50:22,047 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 22:50:22,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 22:50:22,048 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 22:50:22,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 22:50:22,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 10:50:21" (1/3) ... [2025-03-08 22:50:22,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3993711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:50:22, skipping insertion in model container [2025-03-08 22:50:22,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 10:50:21" (2/3) ... [2025-03-08 22:50:22,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3993711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 10:50:22, skipping insertion in model container [2025-03-08 22:50:22,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 10:50:22" (3/3) ... [2025-03-08 22:50:22,054 INFO L128 eAbstractionObserver]: Analyzing ICFG tree_cnstr.i [2025-03-08 22:50:22,064 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 22:50:22,066 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG tree_cnstr.i that has 1 procedures, 122 locations, 1 initial locations, 4 loop locations, and 56 error locations. [2025-03-08 22:50:22,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 22:50:22,107 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;@5a639ee8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 22:50:22,107 INFO L334 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2025-03-08 22:50:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 65 states have (on average 2.123076923076923) internal successors, (138), 121 states have internal predecessors, (138), 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 22:50:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 22:50:22,117 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:22,118 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 22:50:22,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:22,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 171756, now seen corresponding path program 1 times [2025-03-08 22:50:22,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:22,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858925834] [2025-03-08 22:50:22,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:22,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:22,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 22:50:22,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 22:50:22,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:22,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:22,274 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 22:50:22,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:22,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858925834] [2025-03-08 22:50:22,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858925834] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:22,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:22,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:50:22,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701546515] [2025-03-08 22:50:22,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:22,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:50:22,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:22,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:50:22,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:50:22,303 INFO L87 Difference]: Start difference. First operand has 122 states, 65 states have (on average 2.123076923076923) internal successors, (138), 121 states have internal predecessors, (138), 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 22:50:22,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:22,445 INFO L93 Difference]: Finished difference Result 160 states and 179 transitions. [2025-03-08 22:50:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:50:22,448 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 22:50:22,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:22,453 INFO L225 Difference]: With dead ends: 160 [2025-03-08 22:50:22,453 INFO L226 Difference]: Without dead ends: 158 [2025-03-08 22:50:22,454 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 22:50:22,456 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 121 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:22,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 106 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-08 22:50:22,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 118. [2025-03-08 22:50:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 64 states have (on average 2.046875) internal successors, (131), 117 states have internal predecessors, (131), 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 22:50:22,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 131 transitions. [2025-03-08 22:50:22,485 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 131 transitions. Word has length 3 [2025-03-08 22:50:22,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:22,486 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 131 transitions. [2025-03-08 22:50:22,486 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 22:50:22,486 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 131 transitions. [2025-03-08 22:50:22,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-08 22:50:22,486 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:22,486 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-08 22:50:22,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 22:50:22,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:22,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash 171757, now seen corresponding path program 1 times [2025-03-08 22:50:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:22,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883090942] [2025-03-08 22:50:22,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:22,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:22,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-08 22:50:22,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-08 22:50:22,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:22,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:22,555 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 22:50:22,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:22,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883090942] [2025-03-08 22:50:22,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883090942] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:22,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:22,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 22:50:22,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303791776] [2025-03-08 22:50:22,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:22,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:50:22,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:22,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:50:22,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:50:22,557 INFO L87 Difference]: Start difference. First operand 118 states and 131 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 22:50:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:22,667 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2025-03-08 22:50:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:50:22,668 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 22:50:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:22,669 INFO L225 Difference]: With dead ends: 156 [2025-03-08 22:50:22,670 INFO L226 Difference]: Without dead ends: 156 [2025-03-08 22:50:22,671 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 22:50:22,671 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 122 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:22,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 108 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-03-08 22:50:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 116. [2025-03-08 22:50:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 64 states have (on average 2.015625) internal successors, (129), 115 states have internal predecessors, (129), 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 22:50:22,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 129 transitions. [2025-03-08 22:50:22,684 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 129 transitions. Word has length 3 [2025-03-08 22:50:22,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:22,685 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 129 transitions. [2025-03-08 22:50:22,685 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 22:50:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 129 transitions. [2025-03-08 22:50:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 22:50:22,685 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:22,685 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:22,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 22:50:22,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:22,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:22,686 INFO L85 PathProgramCache]: Analyzing trace with hash -290255996, now seen corresponding path program 1 times [2025-03-08 22:50:22,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:22,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87861491] [2025-03-08 22:50:22,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:22,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 22:50:22,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 22:50:22,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:22,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:22,837 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 22:50:22,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:22,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87861491] [2025-03-08 22:50:22,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87861491] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:22,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:22,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115692932] [2025-03-08 22:50:22,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:22,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:50:22,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:22,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:50:22,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:50:22,839 INFO L87 Difference]: Start difference. First operand 116 states and 129 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 22:50:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:23,103 INFO L93 Difference]: Finished difference Result 222 states and 271 transitions. [2025-03-08 22:50:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:50:23,104 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 22:50:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:23,105 INFO L225 Difference]: With dead ends: 222 [2025-03-08 22:50:23,105 INFO L226 Difference]: Without dead ends: 222 [2025-03-08 22:50:23,105 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 22:50:23,106 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 272 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:23,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 132 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:50:23,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-03-08 22:50:23,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 185. [2025-03-08 22:50:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 133 states have (on average 1.9849624060150375) internal successors, (264), 184 states have internal predecessors, (264), 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 22:50:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 264 transitions. [2025-03-08 22:50:23,115 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 264 transitions. Word has length 7 [2025-03-08 22:50:23,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:23,115 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 264 transitions. [2025-03-08 22:50:23,116 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 22:50:23,116 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 264 transitions. [2025-03-08 22:50:23,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 22:50:23,116 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:23,116 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:23,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 22:50:23,116 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:23,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash -290255997, now seen corresponding path program 1 times [2025-03-08 22:50:23,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:23,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352221423] [2025-03-08 22:50:23,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:23,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:23,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 22:50:23,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 22:50:23,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:23,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:23,156 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 22:50:23,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:23,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352221423] [2025-03-08 22:50:23,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352221423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:23,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:23,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:23,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192849984] [2025-03-08 22:50:23,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:23,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:50:23,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:23,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:50:23,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:50:23,158 INFO L87 Difference]: Start difference. First operand 185 states and 264 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 22:50:23,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:23,325 INFO L93 Difference]: Finished difference Result 226 states and 302 transitions. [2025-03-08 22:50:23,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:50:23,326 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 22:50:23,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:23,326 INFO L225 Difference]: With dead ends: 226 [2025-03-08 22:50:23,328 INFO L226 Difference]: Without dead ends: 226 [2025-03-08 22:50:23,328 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 22:50:23,328 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 198 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:23,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 78 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:50:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2025-03-08 22:50:23,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 171. [2025-03-08 22:50:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 135 states have (on average 1.7037037037037037) internal successors, (230), 170 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 22:50:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2025-03-08 22:50:23,335 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 7 [2025-03-08 22:50:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:23,335 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2025-03-08 22:50:23,335 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 22:50:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2025-03-08 22:50:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-08 22:50:23,335 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:23,335 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:23,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 22:50:23,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:23,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:23,336 INFO L85 PathProgramCache]: Analyzing trace with hash 236759351, now seen corresponding path program 1 times [2025-03-08 22:50:23,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:23,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104880519] [2025-03-08 22:50:23,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:23,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:23,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-08 22:50:23,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-08 22:50:23,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:23,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:23,367 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 22:50:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:23,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104880519] [2025-03-08 22:50:23,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104880519] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:23,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490892710] [2025-03-08 22:50:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:23,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:50:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:23,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:50:23,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:50:23,369 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:23,379 INFO L93 Difference]: Finished difference Result 185 states and 228 transitions. [2025-03-08 22:50:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:50:23,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-08 22:50:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:23,380 INFO L225 Difference]: With dead ends: 185 [2025-03-08 22:50:23,380 INFO L226 Difference]: Without dead ends: 185 [2025-03-08 22:50:23,380 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 22:50:23,381 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 103 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 154 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 22:50:23,381 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 154 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:50:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-03-08 22:50:23,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2025-03-08 22:50:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 135 states have (on average 1.6888888888888889) internal successors, (228), 170 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 22:50:23,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 228 transitions. [2025-03-08 22:50:23,386 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 228 transitions. Word has length 9 [2025-03-08 22:50:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:23,390 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 228 transitions. [2025-03-08 22:50:23,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:23,391 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 228 transitions. [2025-03-08 22:50:23,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 22:50:23,391 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:23,391 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:23,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 22:50:23,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:23,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:23,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1619416272, now seen corresponding path program 1 times [2025-03-08 22:50:23,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:23,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724134418] [2025-03-08 22:50:23,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:23,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:23,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 22:50:23,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 22:50:23,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:23,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:23,430 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 22:50:23,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:23,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724134418] [2025-03-08 22:50:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724134418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:23,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170199302] [2025-03-08 22:50:23,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:23,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:50:23,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:23,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:50:23,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:50:23,431 INFO L87 Difference]: Start difference. First operand 171 states and 228 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 22:50:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:23,441 INFO L93 Difference]: Finished difference Result 174 states and 231 transitions. [2025-03-08 22:50:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:50:23,441 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 22:50:23,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:23,442 INFO L225 Difference]: With dead ends: 174 [2025-03-08 22:50:23,442 INFO L226 Difference]: Without dead ends: 174 [2025-03-08 22:50:23,442 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 22:50:23,443 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 22:50:23,443 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 22:50:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-08 22:50:23,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2025-03-08 22:50:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 138 states have (on average 1.673913043478261) internal successors, (231), 173 states have internal predecessors, (231), 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 22:50:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 231 transitions. [2025-03-08 22:50:23,451 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 231 transitions. Word has length 14 [2025-03-08 22:50:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:23,451 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 231 transitions. [2025-03-08 22:50:23,451 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 22:50:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 231 transitions. [2025-03-08 22:50:23,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 22:50:23,451 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:23,451 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:23,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 22:50:23,452 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:23,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash -840200124, now seen corresponding path program 1 times [2025-03-08 22:50:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:23,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277671531] [2025-03-08 22:50:23,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:23,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:23,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 22:50:23,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 22:50:23,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:23,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:23,489 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 22:50:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277671531] [2025-03-08 22:50:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277671531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293146762] [2025-03-08 22:50:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:23,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:50:23,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:23,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:50:23,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:50:23,491 INFO L87 Difference]: Start difference. First operand 174 states and 231 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 22:50:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:23,497 INFO L93 Difference]: Finished difference Result 176 states and 233 transitions. [2025-03-08 22:50:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:50:23,498 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 22:50:23,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:23,499 INFO L225 Difference]: With dead ends: 176 [2025-03-08 22:50:23,499 INFO L226 Difference]: Without dead ends: 176 [2025-03-08 22:50:23,499 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 22:50:23,499 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 22:50:23,499 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 22:50:23,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-03-08 22:50:23,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2025-03-08 22:50:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 140 states have (on average 1.6642857142857144) internal successors, (233), 175 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 22:50:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 233 transitions. [2025-03-08 22:50:23,503 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 233 transitions. Word has length 14 [2025-03-08 22:50:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:23,503 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 233 transitions. [2025-03-08 22:50:23,503 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 22:50:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 233 transitions. [2025-03-08 22:50:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-08 22:50:23,503 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:23,503 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:23,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 22:50:23,503 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:23,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1512831152, now seen corresponding path program 1 times [2025-03-08 22:50:23,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:23,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665819073] [2025-03-08 22:50:23,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:23,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:23,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 22:50:23,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 22:50:23,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:23,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:23,554 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 22:50:23,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:23,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665819073] [2025-03-08 22:50:23,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665819073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:23,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:23,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:23,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494384177] [2025-03-08 22:50:23,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:23,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:50:23,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:23,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:50:23,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:50:23,555 INFO L87 Difference]: Start difference. First operand 176 states and 233 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 22:50:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:23,571 INFO L93 Difference]: Finished difference Result 182 states and 233 transitions. [2025-03-08 22:50:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:50:23,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 22:50:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:23,572 INFO L225 Difference]: With dead ends: 182 [2025-03-08 22:50:23,572 INFO L226 Difference]: Without dead ends: 182 [2025-03-08 22:50:23,572 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 22:50:23,572 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 4 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 213 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 22:50:23,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 213 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:50:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2025-03-08 22:50:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 178. [2025-03-08 22:50:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 142 states have (on average 1.6338028169014085) internal successors, (232), 177 states have internal predecessors, (232), 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 22:50:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 232 transitions. [2025-03-08 22:50:23,577 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 232 transitions. Word has length 16 [2025-03-08 22:50:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:23,577 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 232 transitions. [2025-03-08 22:50:23,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 22:50:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 232 transitions. [2025-03-08 22:50:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-08 22:50:23,578 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:23,578 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:23,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 22:50:23,578 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:23,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 203446278, now seen corresponding path program 1 times [2025-03-08 22:50:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:23,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408096059] [2025-03-08 22:50:23,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:23,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:23,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 22:50:23,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 22:50:23,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:23,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:23,767 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 22:50:23,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:23,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408096059] [2025-03-08 22:50:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408096059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:23,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 22:50:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699541633] [2025-03-08 22:50:23,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:23,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:50:23,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:23,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:50:23,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:50:23,768 INFO L87 Difference]: Start difference. First operand 178 states and 232 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 22:50:23,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:23,953 INFO L93 Difference]: Finished difference Result 257 states and 326 transitions. [2025-03-08 22:50:23,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 22:50:23,953 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 22:50:23,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:23,954 INFO L225 Difference]: With dead ends: 257 [2025-03-08 22:50:23,954 INFO L226 Difference]: Without dead ends: 257 [2025-03-08 22:50:23,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-08 22:50:23,955 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 106 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:23,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 417 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-03-08 22:50:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 192. [2025-03-08 22:50:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 156 states have (on average 1.608974358974359) internal successors, (251), 191 states have internal predecessors, (251), 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 22:50:23,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 251 transitions. [2025-03-08 22:50:23,958 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 251 transitions. Word has length 16 [2025-03-08 22:50:23,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:23,958 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 251 transitions. [2025-03-08 22:50:23,958 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 22:50:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 251 transitions. [2025-03-08 22:50:23,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 22:50:23,958 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:23,958 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:23,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 22:50:23,959 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:23,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1298272866, now seen corresponding path program 1 times [2025-03-08 22:50:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:23,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077041539] [2025-03-08 22:50:23,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:23,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:23,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 22:50:23,969 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 22:50:23,969 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:23,969 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:24,035 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 22:50:24,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:24,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077041539] [2025-03-08 22:50:24,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077041539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:24,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:24,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 22:50:24,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304941679] [2025-03-08 22:50:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:24,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:50:24,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:24,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:50:24,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:50:24,036 INFO L87 Difference]: Start difference. First operand 192 states and 251 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:24,150 INFO L93 Difference]: Finished difference Result 201 states and 264 transitions. [2025-03-08 22:50:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 22:50:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-08 22:50:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:24,151 INFO L225 Difference]: With dead ends: 201 [2025-03-08 22:50:24,151 INFO L226 Difference]: Without dead ends: 201 [2025-03-08 22:50:24,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 22:50:24,152 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 4 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:24,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 302 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2025-03-08 22:50:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2025-03-08 22:50:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 162 states have (on average 1.5987654320987654) internal successors, (259), 197 states have internal predecessors, (259), 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 22:50:24,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2025-03-08 22:50:24,156 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 17 [2025-03-08 22:50:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:24,156 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2025-03-08 22:50:24,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2025-03-08 22:50:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 22:50:24,158 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:24,158 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:24,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 22:50:24,158 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:24,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1298426781, now seen corresponding path program 1 times [2025-03-08 22:50:24,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:24,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032838806] [2025-03-08 22:50:24,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:24,164 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 22:50:24,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 22:50:24,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:24,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:24,291 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 22:50:24,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032838806] [2025-03-08 22:50:24,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032838806] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:24,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:24,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 22:50:24,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085792694] [2025-03-08 22:50:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:24,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:50:24,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:24,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:50:24,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:50:24,292 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:24,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:24,437 INFO L93 Difference]: Finished difference Result 264 states and 335 transitions. [2025-03-08 22:50:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:50:24,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-08 22:50:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:24,438 INFO L225 Difference]: With dead ends: 264 [2025-03-08 22:50:24,438 INFO L226 Difference]: Without dead ends: 264 [2025-03-08 22:50:24,438 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 22:50:24,439 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 101 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:24,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 422 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-03-08 22:50:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 235. [2025-03-08 22:50:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 199 states have (on average 1.6030150753768844) internal successors, (319), 234 states have internal predecessors, (319), 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 22:50:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 319 transitions. [2025-03-08 22:50:24,444 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 319 transitions. Word has length 17 [2025-03-08 22:50:24,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:24,444 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 319 transitions. [2025-03-08 22:50:24,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 319 transitions. [2025-03-08 22:50:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-08 22:50:24,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:24,445 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:24,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 22:50:24,445 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:24,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash -346875839, now seen corresponding path program 1 times [2025-03-08 22:50:24,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:24,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889480201] [2025-03-08 22:50:24,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:24,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:24,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-08 22:50:24,456 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-08 22:50:24,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:24,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:24,485 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 22:50:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889480201] [2025-03-08 22:50:24,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889480201] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:24,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:24,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:24,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061487854] [2025-03-08 22:50:24,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:24,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 22:50:24,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:24,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 22:50:24,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 22:50:24,486 INFO L87 Difference]: Start difference. First operand 235 states and 319 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:24,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:24,567 INFO L93 Difference]: Finished difference Result 264 states and 330 transitions. [2025-03-08 22:50:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:50:24,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-03-08 22:50:24,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:24,568 INFO L225 Difference]: With dead ends: 264 [2025-03-08 22:50:24,568 INFO L226 Difference]: Without dead ends: 264 [2025-03-08 22:50:24,568 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 22:50:24,568 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 209 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:24,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 190 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-03-08 22:50:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 236. [2025-03-08 22:50:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 200 states have (on average 1.6) internal successors, (320), 235 states have internal predecessors, (320), 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 22:50:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 320 transitions. [2025-03-08 22:50:24,573 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 320 transitions. Word has length 17 [2025-03-08 22:50:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:24,574 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 320 transitions. [2025-03-08 22:50:24,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 22:50:24,574 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 320 transitions. [2025-03-08 22:50:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 22:50:24,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:24,574 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 22:50:24,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 22:50:24,575 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:24,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:24,575 INFO L85 PathProgramCache]: Analyzing trace with hash 960688142, now seen corresponding path program 1 times [2025-03-08 22:50:24,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:24,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515414845] [2025-03-08 22:50:24,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:24,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:24,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 22:50:24,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 22:50:24,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:24,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:24,659 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 22:50:24,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:24,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515414845] [2025-03-08 22:50:24,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515414845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:24,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:24,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:50:24,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528394140] [2025-03-08 22:50:24,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:24,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:50:24,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:24,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:50:24,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:50:24,660 INFO L87 Difference]: Start difference. First operand 236 states and 320 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 22:50:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:24,756 INFO L93 Difference]: Finished difference Result 235 states and 318 transitions. [2025-03-08 22:50:24,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:50:24,757 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 22:50:24,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:24,757 INFO L225 Difference]: With dead ends: 235 [2025-03-08 22:50:24,757 INFO L226 Difference]: Without dead ends: 235 [2025-03-08 22:50:24,757 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 22:50:24,758 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 3 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:24,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 284 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:24,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-03-08 22:50:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2025-03-08 22:50:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 200 states have (on average 1.59) internal successors, (318), 234 states have internal predecessors, (318), 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 22:50:24,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 318 transitions. [2025-03-08 22:50:24,761 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 318 transitions. Word has length 18 [2025-03-08 22:50:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:24,761 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 318 transitions. [2025-03-08 22:50:24,761 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 22:50:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 318 transitions. [2025-03-08 22:50:24,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 22:50:24,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:24,761 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 22:50:24,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 22:50:24,762 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:24,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:24,762 INFO L85 PathProgramCache]: Analyzing trace with hash 960688143, now seen corresponding path program 1 times [2025-03-08 22:50:24,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:24,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620236030] [2025-03-08 22:50:24,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:24,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:24,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 22:50:24,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 22:50:24,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:24,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:24,857 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 22:50:24,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:24,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620236030] [2025-03-08 22:50:24,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620236030] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:24,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:24,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:50:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90730295] [2025-03-08 22:50:24,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:24,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:50:24,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:24,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:50:24,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:50:24,859 INFO L87 Difference]: Start difference. First operand 235 states and 318 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 22:50:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:24,958 INFO L93 Difference]: Finished difference Result 234 states and 316 transitions. [2025-03-08 22:50:24,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:50:24,958 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 22:50:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:24,959 INFO L225 Difference]: With dead ends: 234 [2025-03-08 22:50:24,959 INFO L226 Difference]: Without dead ends: 234 [2025-03-08 22:50:24,959 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 22:50:24,959 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 2 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:24,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 261 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:24,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-03-08 22:50:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2025-03-08 22:50:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 200 states have (on average 1.58) internal successors, (316), 233 states have internal predecessors, (316), 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 22:50:24,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 316 transitions. [2025-03-08 22:50:24,963 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 316 transitions. Word has length 18 [2025-03-08 22:50:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:24,963 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 316 transitions. [2025-03-08 22:50:24,963 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 22:50:24,963 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 316 transitions. [2025-03-08 22:50:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-08 22:50:24,963 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:24,963 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:24,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 22:50:24,964 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:24,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:24,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1700216254, now seen corresponding path program 1 times [2025-03-08 22:50:24,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:24,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147481699] [2025-03-08 22:50:24,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:24,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:24,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-08 22:50:24,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-08 22:50:24,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:24,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:25,110 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 22:50:25,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:25,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147481699] [2025-03-08 22:50:25,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147481699] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:25,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:25,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:50:25,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786698045] [2025-03-08 22:50:25,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:25,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 22:50:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:25,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 22:50:25,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 22:50:25,111 INFO L87 Difference]: Start difference. First operand 234 states and 316 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 22:50:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:25,340 INFO L93 Difference]: Finished difference Result 328 states and 412 transitions. [2025-03-08 22:50:25,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 22:50:25,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2025-03-08 22:50:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:25,341 INFO L225 Difference]: With dead ends: 328 [2025-03-08 22:50:25,341 INFO L226 Difference]: Without dead ends: 328 [2025-03-08 22:50:25,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2025-03-08 22:50:25,342 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 314 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:25,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 425 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:50:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2025-03-08 22:50:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 287. [2025-03-08 22:50:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 253 states have (on average 1.5494071146245059) internal successors, (392), 286 states have internal predecessors, (392), 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 22:50:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 392 transitions. [2025-03-08 22:50:25,346 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 392 transitions. Word has length 19 [2025-03-08 22:50:25,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:25,346 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 392 transitions. [2025-03-08 22:50:25,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 22:50:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 392 transitions. [2025-03-08 22:50:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-08 22:50:25,346 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:25,346 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:25,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 22:50:25,347 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:25,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash -86829791, now seen corresponding path program 1 times [2025-03-08 22:50:25,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:25,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977620529] [2025-03-08 22:50:25,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:25,352 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 22:50:25,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 22:50:25,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:25,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:25,371 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 22:50:25,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:25,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977620529] [2025-03-08 22:50:25,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977620529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:25,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:25,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 22:50:25,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274602930] [2025-03-08 22:50:25,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:25,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 22:50:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:25,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 22:50:25,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 22:50:25,374 INFO L87 Difference]: Start difference. First operand 287 states and 392 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 22:50:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:25,381 INFO L93 Difference]: Finished difference Result 262 states and 341 transitions. [2025-03-08 22:50:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 22:50:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2025-03-08 22:50:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:25,382 INFO L225 Difference]: With dead ends: 262 [2025-03-08 22:50:25,382 INFO L226 Difference]: Without dead ends: 262 [2025-03-08 22:50:25,382 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 22:50:25,383 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 2 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 214 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 22:50:25,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 214 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 22:50:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-03-08 22:50:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2025-03-08 22:50:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 226 states have (on average 1.508849557522124) internal successors, (341), 259 states have internal predecessors, (341), 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 22:50:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 341 transitions. [2025-03-08 22:50:25,388 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 341 transitions. Word has length 20 [2025-03-08 22:50:25,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:25,388 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 341 transitions. [2025-03-08 22:50:25,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 22:50:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 341 transitions. [2025-03-08 22:50:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-08 22:50:25,389 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:25,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:25,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 22:50:25,389 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:25,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:25,390 INFO L85 PathProgramCache]: Analyzing trace with hash -86831326, now seen corresponding path program 1 times [2025-03-08 22:50:25,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:25,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557117003] [2025-03-08 22:50:25,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:25,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 22:50:25,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 22:50:25,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:25,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:25,458 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 22:50:25,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:25,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557117003] [2025-03-08 22:50:25,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557117003] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:25,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163282222] [2025-03-08 22:50:25,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:25,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:25,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:25,462 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 22:50:25,463 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 22:50:25,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 22:50:25,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 22:50:25,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:25,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:25,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-08 22:50:25,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:25,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2025-03-08 22:50:25,604 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 22:50:25,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:25,627 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 22:50:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163282222] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:50:25,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:50:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2025-03-08 22:50:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072159083] [2025-03-08 22:50:25,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:25,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 22:50:25,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:25,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 22:50:25,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 22:50:25,628 INFO L87 Difference]: Start difference. First operand 260 states and 341 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 22:50:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:25,740 INFO L93 Difference]: Finished difference Result 273 states and 354 transitions. [2025-03-08 22:50:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 22:50:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 20 [2025-03-08 22:50:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:25,741 INFO L225 Difference]: With dead ends: 273 [2025-03-08 22:50:25,741 INFO L226 Difference]: Without dead ends: 257 [2025-03-08 22:50:25,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-08 22:50:25,742 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 39 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:25,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 281 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:25,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-03-08 22:50:25,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 255. [2025-03-08 22:50:25,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 221 states have (on average 1.5158371040723981) internal successors, (335), 254 states have internal predecessors, (335), 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 22:50:25,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 335 transitions. [2025-03-08 22:50:25,746 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 335 transitions. Word has length 20 [2025-03-08 22:50:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:25,746 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 335 transitions. [2025-03-08 22:50:25,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 22:50:25,746 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 335 transitions. [2025-03-08 22:50:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 22:50:25,746 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:25,746 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 22:50:25,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 22:50:25,947 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,SelfDestructingSolverStorable16 [2025-03-08 22:50:25,947 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:25,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1801566713, now seen corresponding path program 1 times [2025-03-08 22:50:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:25,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095355847] [2025-03-08 22:50:25,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:25,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 22:50:25,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 22:50:25,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:25,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:26,054 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 22:50:26,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095355847] [2025-03-08 22:50:26,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095355847] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:26,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:26,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:50:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421247339] [2025-03-08 22:50:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:26,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:50:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:26,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:50:26,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:50:26,055 INFO L87 Difference]: Start difference. First operand 255 states and 335 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 22:50:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:26,220 INFO L93 Difference]: Finished difference Result 260 states and 339 transitions. [2025-03-08 22:50:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:50:26,221 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 22:50:26,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:26,221 INFO L225 Difference]: With dead ends: 260 [2025-03-08 22:50:26,221 INFO L226 Difference]: Without dead ends: 260 [2025-03-08 22:50:26,222 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 22:50:26,222 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 64 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:26,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 202 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2025-03-08 22:50:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2025-03-08 22:50:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 221 states have (on average 1.502262443438914) internal successors, (332), 253 states have internal predecessors, (332), 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 22:50:26,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 332 transitions. [2025-03-08 22:50:26,226 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 332 transitions. Word has length 21 [2025-03-08 22:50:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:26,226 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 332 transitions. [2025-03-08 22:50:26,226 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 22:50:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 332 transitions. [2025-03-08 22:50:26,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 22:50:26,226 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:26,227 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 22:50:26,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 22:50:26,227 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:26,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:26,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1801566712, now seen corresponding path program 1 times [2025-03-08 22:50:26,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:26,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794694622] [2025-03-08 22:50:26,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:26,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:26,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 22:50:26,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 22:50:26,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:26,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:26,412 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 22:50:26,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:26,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794694622] [2025-03-08 22:50:26,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794694622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:26,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:26,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:50:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699099369] [2025-03-08 22:50:26,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:26,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:50:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:26,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:50:26,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:50:26,413 INFO L87 Difference]: Start difference. First operand 254 states and 332 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 22:50:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:26,654 INFO L93 Difference]: Finished difference Result 259 states and 336 transitions. [2025-03-08 22:50:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:50:26,654 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 22:50:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:26,656 INFO L225 Difference]: With dead ends: 259 [2025-03-08 22:50:26,656 INFO L226 Difference]: Without dead ends: 259 [2025-03-08 22:50:26,656 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 22:50:26,656 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 60 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:26,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 265 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:50:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2025-03-08 22:50:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 253. [2025-03-08 22:50:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 221 states have (on average 1.48868778280543) internal successors, (329), 252 states have internal predecessors, (329), 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 22:50:26,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 329 transitions. [2025-03-08 22:50:26,660 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 329 transitions. Word has length 21 [2025-03-08 22:50:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:26,660 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 329 transitions. [2025-03-08 22:50:26,660 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 22:50:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 329 transitions. [2025-03-08 22:50:26,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 22:50:26,662 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:26,662 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 22:50:26,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 22:50:26,662 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:26,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1870483564, now seen corresponding path program 1 times [2025-03-08 22:50:26,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:26,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396422958] [2025-03-08 22:50:26,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:26,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:26,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 22:50:26,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 22:50:26,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:26,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:26,733 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 22:50:26,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396422958] [2025-03-08 22:50:26,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396422958] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:26,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:26,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:50:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927121157] [2025-03-08 22:50:26,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:26,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:50:26,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:26,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:50:26,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:50:26,735 INFO L87 Difference]: Start difference. First operand 253 states and 329 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 22:50:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:26,833 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2025-03-08 22:50:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:50:26,834 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 22:50:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:26,834 INFO L225 Difference]: With dead ends: 252 [2025-03-08 22:50:26,834 INFO L226 Difference]: Without dead ends: 252 [2025-03-08 22:50:26,834 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 22:50:26,835 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 3 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:26,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 274 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2025-03-08 22:50:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2025-03-08 22:50:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 221 states have (on average 1.4796380090497738) internal successors, (327), 251 states have internal predecessors, (327), 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 22:50:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 327 transitions. [2025-03-08 22:50:26,839 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 327 transitions. Word has length 22 [2025-03-08 22:50:26,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:26,839 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 327 transitions. [2025-03-08 22:50:26,839 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 22:50:26,839 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 327 transitions. [2025-03-08 22:50:26,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-03-08 22:50:26,839 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:26,839 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 22:50:26,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 22:50:26,841 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:26,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1870483565, now seen corresponding path program 1 times [2025-03-08 22:50:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:26,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861974994] [2025-03-08 22:50:26,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:26,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:26,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-03-08 22:50:26,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-03-08 22:50:26,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:26,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:26,925 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 22:50:26,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:26,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861974994] [2025-03-08 22:50:26,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861974994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:26,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:26,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 22:50:26,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889382153] [2025-03-08 22:50:26,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:26,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 22:50:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:26,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 22:50:26,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 22:50:26,926 INFO L87 Difference]: Start difference. First operand 252 states and 327 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 22:50:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:27,032 INFO L93 Difference]: Finished difference Result 251 states and 325 transitions. [2025-03-08 22:50:27,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 22:50:27,032 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 22:50:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:27,033 INFO L225 Difference]: With dead ends: 251 [2025-03-08 22:50:27,033 INFO L226 Difference]: Without dead ends: 251 [2025-03-08 22:50:27,033 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 22:50:27,033 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 2 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:27,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 251 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 22:50:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-03-08 22:50:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2025-03-08 22:50:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 221 states have (on average 1.4705882352941178) internal successors, (325), 250 states have internal predecessors, (325), 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 22:50:27,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 325 transitions. [2025-03-08 22:50:27,037 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 325 transitions. Word has length 22 [2025-03-08 22:50:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:27,037 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 325 transitions. [2025-03-08 22:50:27,037 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 22:50:27,037 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 325 transitions. [2025-03-08 22:50:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 22:50:27,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:27,037 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 22:50:27,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 22:50:27,037 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:27,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash 670186511, now seen corresponding path program 1 times [2025-03-08 22:50:27,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:27,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434701745] [2025-03-08 22:50:27,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:27,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 22:50:27,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 22:50:27,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:27,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:27,147 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 22:50:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434701745] [2025-03-08 22:50:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434701745] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:27,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:50:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083007675] [2025-03-08 22:50:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:27,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:50:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:27,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:50:27,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:50:27,148 INFO L87 Difference]: Start difference. First operand 251 states and 325 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 22:50:27,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:27,357 INFO L93 Difference]: Finished difference Result 256 states and 331 transitions. [2025-03-08 22:50:27,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:50:27,357 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 22:50:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:27,358 INFO L225 Difference]: With dead ends: 256 [2025-03-08 22:50:27,358 INFO L226 Difference]: Without dead ends: 256 [2025-03-08 22:50:27,358 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 22:50:27,359 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 53 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:27,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 265 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:50:27,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2025-03-08 22:50:27,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 250. [2025-03-08 22:50:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 221 states have (on average 1.4660633484162895) internal successors, (324), 249 states have internal predecessors, (324), 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 22:50:27,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 324 transitions. [2025-03-08 22:50:27,363 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 324 transitions. Word has length 25 [2025-03-08 22:50:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:27,363 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 324 transitions. [2025-03-08 22:50:27,363 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 22:50:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 324 transitions. [2025-03-08 22:50:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-03-08 22:50:27,364 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:27,364 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 22:50:27,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-08 22:50:27,364 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:27,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:27,364 INFO L85 PathProgramCache]: Analyzing trace with hash 670186512, now seen corresponding path program 1 times [2025-03-08 22:50:27,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:27,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713111264] [2025-03-08 22:50:27,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:27,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:27,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-08 22:50:27,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-08 22:50:27,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:27,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:27,552 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 22:50:27,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:27,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713111264] [2025-03-08 22:50:27,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713111264] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:27,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:27,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 22:50:27,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629667288] [2025-03-08 22:50:27,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:27,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 22:50:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:27,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 22:50:27,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 22:50:27,553 INFO L87 Difference]: Start difference. First operand 250 states and 324 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 22:50:27,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:27,752 INFO L93 Difference]: Finished difference Result 255 states and 330 transitions. [2025-03-08 22:50:27,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 22:50:27,752 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 22:50:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:27,753 INFO L225 Difference]: With dead ends: 255 [2025-03-08 22:50:27,753 INFO L226 Difference]: Without dead ends: 255 [2025-03-08 22:50:27,753 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 22:50:27,754 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 53 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:27,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 220 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 22:50:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2025-03-08 22:50:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2025-03-08 22:50:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 221 states have (on average 1.4615384615384615) internal successors, (323), 248 states have internal predecessors, (323), 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 22:50:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 323 transitions. [2025-03-08 22:50:27,757 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 323 transitions. Word has length 25 [2025-03-08 22:50:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:27,757 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 323 transitions. [2025-03-08 22:50:27,757 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 22:50:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 323 transitions. [2025-03-08 22:50:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 22:50:27,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:27,757 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 22:50:27,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-08 22:50:27,758 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:27,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:27,758 INFO L85 PathProgramCache]: Analyzing trace with hash 817514352, now seen corresponding path program 1 times [2025-03-08 22:50:27,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:27,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884630139] [2025-03-08 22:50:27,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:27,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:27,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:50:27,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:50:27,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:27,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 22:50:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884630139] [2025-03-08 22:50:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884630139] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58002513] [2025-03-08 22:50:28,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:28,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:28,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:28,420 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 22:50:28,422 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 22:50:28,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:50:28,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:50:28,497 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:28,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:28,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-08 22:50:28,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:28,507 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 13 treesize of output 9 [2025-03-08 22:50:28,600 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:50:28,601 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 22:50:28,632 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 22:50:28,635 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 25 treesize of output 13 [2025-03-08 22:50:28,721 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:50:28,721 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 41 treesize of output 38 [2025-03-08 22:50:28,727 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 26 treesize of output 13 [2025-03-08 22:50:28,746 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 16 treesize of output 8 [2025-03-08 22:50:28,778 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 18 treesize of output 13 [2025-03-08 22:50:28,880 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 9 treesize of output 3 [2025-03-08 22:50:28,912 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 22:50:28,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:29,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:29,021 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 29 [2025-03-08 22:50:29,139 WARN L851 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~root~0#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) (forall ((v_ArrVal_479 (Array Int Int)) (v_ArrVal_481 (Array Int Int)) (v_ArrVal_480 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_479) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_480) |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_481) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4)) 0)) (= |c_ULTIMATE.start_main_~n~0#1.offset| |c_ULTIMATE.start_main_~root~0#1.offset|)) is different from false [2025-03-08 22:50:29,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:29,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 84 [2025-03-08 22:50:29,585 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 22:50:29,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58002513] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:50:29,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:50:29,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 37 [2025-03-08 22:50:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035895759] [2025-03-08 22:50:29,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:29,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-08 22:50:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:29,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-08 22:50:29,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1038, Unknown=34, NotChecked=68, Total=1332 [2025-03-08 22:50:29,587 INFO L87 Difference]: Start difference. First operand 249 states and 323 transitions. Second operand has 37 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 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 22:50:30,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:30,760 INFO L93 Difference]: Finished difference Result 265 states and 312 transitions. [2025-03-08 22:50:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 22:50:30,760 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 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 22:50:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:30,761 INFO L225 Difference]: With dead ends: 265 [2025-03-08 22:50:30,761 INFO L226 Difference]: Without dead ends: 265 [2025-03-08 22:50:30,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=582, Invalid=2143, Unknown=35, NotChecked=102, Total=2862 [2025-03-08 22:50:30,762 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 439 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 1608 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:30,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1333 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1608 Invalid, 0 Unknown, 231 Unchecked, 0.8s Time] [2025-03-08 22:50:30,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2025-03-08 22:50:30,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 225. [2025-03-08 22:50:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 197 states have (on average 1.4365482233502538) internal successors, (283), 224 states have internal predecessors, (283), 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 22:50:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 283 transitions. [2025-03-08 22:50:30,765 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 283 transitions. Word has length 38 [2025-03-08 22:50:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:30,765 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 283 transitions. [2025-03-08 22:50:30,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 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 22:50:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 283 transitions. [2025-03-08 22:50:30,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-08 22:50:30,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:30,766 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 22:50:30,772 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 22:50:30,970 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,SelfDestructingSolverStorable23 [2025-03-08 22:50:30,970 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:30,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash 302993392, now seen corresponding path program 1 times [2025-03-08 22:50:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:30,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063262595] [2025-03-08 22:50:30,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:30,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:50:30,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:50:30,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:30,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:31,344 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 22:50:31,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063262595] [2025-03-08 22:50:31,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063262595] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792760267] [2025-03-08 22:50:31,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:31,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:31,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:31,346 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 22:50:31,348 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 22:50:31,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-08 22:50:31,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-08 22:50:31,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:31,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:31,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-03-08 22:50:31,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:31,502 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:50:31,502 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 22:50:31,534 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 19 treesize of output 1 [2025-03-08 22:50:31,540 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 19 treesize of output 1 [2025-03-08 22:50:31,619 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:50:31,619 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 70 treesize of output 65 [2025-03-08 22:50:31,623 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 49 treesize of output 30 [2025-03-08 22:50:31,699 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:50:31,700 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 70 treesize of output 65 [2025-03-08 22:50:31,704 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 49 treesize of output 30 [2025-03-08 22:50:31,795 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 39 treesize of output 21 [2025-03-08 22:50:31,799 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 32 treesize of output 14 [2025-03-08 22:50:31,837 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 22:50:31,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:31,938 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_557 (Array Int Int)) (v_ArrVal_556 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_557) |c_ULTIMATE.start_main_~root~0#1.base|) .cse0) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_556) |c_ULTIMATE.start_main_~root~0#1.base|) .cse0)))) (forall ((v_ArrVal_557 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem22#1.base| v_ArrVal_557) |c_ULTIMATE.start_main_~root~0#1.base|) .cse0))))) is different from false [2025-03-08 22:50:31,946 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (.cse1 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_557 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_557) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1))) (forall ((v_ArrVal_557 (Array Int Int)) (v_ArrVal_556 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_557) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_556) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1)))))) is different from false [2025-03-08 22:50:31,963 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:31,963 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 82 treesize of output 86 [2025-03-08 22:50:31,994 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_557 (Array Int Int)) (v_ArrVal_555 (Array Int Int)) (v_ArrVal_554 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_555) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_554) |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_557) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) (+ |c_ULTIMATE.start_main_#t~mem21#1.offset| 1))) (forall ((v_prenex_3 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem21#1.base| v_prenex_4) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_prenex_5) |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_prenex_3) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1))) (forall ((v_ArrVal_556 (Array Int Int)) (v_ArrVal_554 (Array Int Int))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_554))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~n~0#1.base|) .cse0) v_ArrVal_556)) |c_ULTIMATE.start_main_~root~0#1.base|) .cse1) |c_ULTIMATE.start_main_#t~mem21#1.base|)))) is different from false [2025-03-08 22:50:32,010 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse2)) (.cse3 (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) (and (forall ((v_ArrVal_556 (Array Int Int)) (v_ArrVal_554 (Array Int Int))) (= .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_554))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~n~0#1.base|) .cse2) v_ArrVal_556)) |c_ULTIMATE.start_main_~root~0#1.base|) .cse3))) (forall ((v_prenex_3 (Array Int Int)) (v_prenex_4 (Array Int Int)) (v_prenex_5 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_prenex_4) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_5) |c_ULTIMATE.start_main_~n~0#1.base|) .cse2) v_prenex_3) |c_ULTIMATE.start_main_~root~0#1.base|) .cse3))) (forall ((v_ArrVal_557 (Array Int Int)) (v_ArrVal_555 (Array Int Int)) (v_ArrVal_554 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_555) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_554) |c_ULTIMATE.start_main_~n~0#1.base|) .cse2) v_ArrVal_557) |c_ULTIMATE.start_main_~root~0#1.base|) .cse3) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~n~0#1.base|) .cse2) 1)))))) is different from false [2025-03-08 22:50:32,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:32,032 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 135 treesize of output 126 [2025-03-08 22:50:32,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:32,038 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 119 treesize of output 90 [2025-03-08 22:50:32,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:32,051 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 392 treesize of output 337 [2025-03-08 22:50:32,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:32,069 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 548 treesize of output 463 [2025-03-08 22:50:32,079 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 368 treesize of output 364 [2025-03-08 22:50:32,087 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 364 treesize of output 352 [2025-03-08 22:50:32,094 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 352 treesize of output 344 [2025-03-08 22:50:32,102 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 344 treesize of output 328 [2025-03-08 22:50:32,109 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 328 treesize of output 324 [2025-03-08 22:50:32,115 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 324 treesize of output 312 [2025-03-08 22:50:32,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:32,130 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 312 treesize of output 297 [2025-03-08 22:50:32,137 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 288 treesize of output 272 [2025-03-08 22:50:32,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:32,342 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 22:50:32,355 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 22:50:32,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792760267] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:50:32,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:50:32,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 31 [2025-03-08 22:50:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411728614] [2025-03-08 22:50:32,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:32,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-03-08 22:50:32,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:32,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-03-08 22:50:32,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=619, Unknown=4, NotChecked=212, Total=930 [2025-03-08 22:50:32,357 INFO L87 Difference]: Start difference. First operand 225 states and 283 transitions. Second operand has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 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 22:50:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:34,212 INFO L93 Difference]: Finished difference Result 539 states and 673 transitions. [2025-03-08 22:50:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-08 22:50:34,216 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 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 22:50:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:34,218 INFO L225 Difference]: With dead ends: 539 [2025-03-08 22:50:34,218 INFO L226 Difference]: Without dead ends: 539 [2025-03-08 22:50:34,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=544, Invalid=3008, Unknown=4, NotChecked=476, Total=4032 [2025-03-08 22:50:34,219 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 912 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 3845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1789 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:34,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1396 Invalid, 3845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1978 Invalid, 0 Unknown, 1789 Unchecked, 1.0s Time] [2025-03-08 22:50:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2025-03-08 22:50:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 287. [2025-03-08 22:50:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 265 states have (on average 1.4037735849056603) internal successors, (372), 286 states have internal predecessors, (372), 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 22:50:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 372 transitions. [2025-03-08 22:50:34,224 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 372 transitions. Word has length 38 [2025-03-08 22:50:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:34,224 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 372 transitions. [2025-03-08 22:50:34,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.225806451612903) internal successors, (100), 31 states have internal predecessors, (100), 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 22:50:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 372 transitions. [2025-03-08 22:50:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-08 22:50:34,225 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:34,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:34,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 22:50:34,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:34,426 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:34,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash 557814329, now seen corresponding path program 1 times [2025-03-08 22:50:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:34,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65036520] [2025-03-08 22:50:34,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:34,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 22:50:34,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 22:50:34,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:34,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:34,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65036520] [2025-03-08 22:50:34,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65036520] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693486112] [2025-03-08 22:50:34,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:34,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:34,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:34,674 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 22:50:34,676 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 22:50:34,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 22:50:34,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 22:50:34,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:34,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:34,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-08 22:50:34,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:34,802 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-08 22:50:34,803 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 22:50:34,829 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 22:50:34,886 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:50:34,886 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 22:50:34,927 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-08 22:50:34,927 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 22:50:35,011 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 22:50:35,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:35,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:35,068 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_630 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_630) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-03-08 22:50:35,093 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_629 (Array Int Int)) (v_ArrVal_630 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_629))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_630)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-03-08 22:50:35,097 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_629 (Array Int Int)) (v_ArrVal_630 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_629))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|) v_ArrVal_630)) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|)) 1)) is different from false [2025-03-08 22:50:35,105 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:35,105 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 22:50:35,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:35,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 144 treesize of output 131 [2025-03-08 22:50:35,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:35,119 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 80 treesize of output 78 [2025-03-08 22:50:35,123 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 70 treesize of output 66 [2025-03-08 22:50:36,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:36,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 136 treesize of output 472 [2025-03-08 22:50:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:49,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693486112] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:50:49,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:50:49,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 26 [2025-03-08 22:50:49,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612568229] [2025-03-08 22:50:49,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:49,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-03-08 22:50:49,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:49,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-03-08 22:50:49,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=439, Unknown=10, NotChecked=138, Total=702 [2025-03-08 22:50:49,427 INFO L87 Difference]: Start difference. First operand 287 states and 372 transitions. Second operand has 27 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 27 states have internal predecessors, (82), 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 22:50:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:50,217 INFO L93 Difference]: Finished difference Result 493 states and 639 transitions. [2025-03-08 22:50:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 22:50:50,217 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 27 states have internal predecessors, (82), 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 39 [2025-03-08 22:50:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:50,219 INFO L225 Difference]: With dead ends: 493 [2025-03-08 22:50:50,219 INFO L226 Difference]: Without dead ends: 493 [2025-03-08 22:50:50,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=636, Unknown=10, NotChecked=168, Total=992 [2025-03-08 22:50:50,220 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 587 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 2123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 892 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:50,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 887 Invalid, 2123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1165 Invalid, 0 Unknown, 892 Unchecked, 0.6s Time] [2025-03-08 22:50:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2025-03-08 22:50:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 363. [2025-03-08 22:50:50,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 341 states have (on average 1.404692082111437) internal successors, (479), 362 states have internal predecessors, (479), 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 22:50:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 479 transitions. [2025-03-08 22:50:50,227 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 479 transitions. Word has length 39 [2025-03-08 22:50:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:50,227 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 479 transitions. [2025-03-08 22:50:50,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 27 states have internal predecessors, (82), 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 22:50:50,227 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 479 transitions. [2025-03-08 22:50:50,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-08 22:50:50,227 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:50,227 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:50,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 22:50:50,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-08 22:50:50,428 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:50,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 557814330, now seen corresponding path program 1 times [2025-03-08 22:50:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882171455] [2025-03-08 22:50:50,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:50,437 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 22:50:50,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 22:50:50,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:50,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:50,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882171455] [2025-03-08 22:50:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882171455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215443854] [2025-03-08 22:50:50,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:50,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:50,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:50,809 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 22:50:50,811 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 22:50:50,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 22:50:50,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 22:50:50,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:50,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:50,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-03-08 22:50:50,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:50,975 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-08 22:50:50,976 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 22:50:51,000 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 22:50:51,003 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 22:50:51,077 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2025-03-08 22:50:51,077 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 53 treesize of output 35 [2025-03-08 22:50:51,084 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 22:50:51,151 INFO L349 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2025-03-08 22:50:51,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 50 [2025-03-08 22:50:51,158 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 22:50:51,262 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 22:50:51,266 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 22:50:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:51,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:51,416 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_705 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_705) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))) (forall ((v_ArrVal_706 (Array Int Int)) (v_ArrVal_705 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_705) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem16#1.base| v_ArrVal_706) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))) is different from false [2025-03-08 22:50:51,483 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:51,484 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 90 treesize of output 94 [2025-03-08 22:50:51,600 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|)) (.cse2 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 (store (select |c_#memory_$Pointer$#1.base| .cse0) .cse2 0)))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~n~0#1.base|) |c_ULTIMATE.start_main_~n~0#1.offset|))) (and (forall ((v_prenex_13 (Array Int Int)) (v_prenex_12 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_prenex_12) .cse1 v_prenex_13) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) (+ .cse2 1))) (forall ((v_ArrVal_706 (Array Int Int))) (= (select (select (store .cse3 .cse1 v_ArrVal_706) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|) .cse0)) (forall ((v_ArrVal_703 (Array Int Int)) (v_ArrVal_705 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_703) .cse1 v_ArrVal_705) |c_ULTIMATE.start_main_~root~0#1.base|) |c_ULTIMATE.start_main_~root~0#1.offset|))))))) is different from false [2025-03-08 22:50:51,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:51,615 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 51 treesize of output 52 [2025-03-08 22:50:51,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:51,623 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 100 treesize of output 99 [2025-03-08 22:50:51,627 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 84 treesize of output 78 [2025-03-08 22:50:51,630 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 51 treesize of output 49 [2025-03-08 22:50:51,678 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:50:51,682 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-03-08 22:50:51,682 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 18 treesize of output 1 [2025-03-08 22:50:51,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:51,687 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 49 treesize of output 50 [2025-03-08 22:50:51,689 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:50:51,691 INFO L173 IndexEqualityManager]: detected equality via solver [2025-03-08 22:50:51,692 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 22:50:51,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:51,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2025-03-08 22:50:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215443854] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 22:50:51,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 22:50:51,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 34 [2025-03-08 22:50:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098857348] [2025-03-08 22:50:51,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 22:50:51,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-03-08 22:50:51,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:51,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-03-08 22:50:51,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=885, Unknown=39, NotChecked=126, Total=1190 [2025-03-08 22:50:51,830 INFO L87 Difference]: Start difference. First operand 363 states and 479 transitions. Second operand has 35 states, 34 states have (on average 3.235294117647059) internal successors, (110), 35 states have internal predecessors, (110), 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 22:50:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:53,216 INFO L93 Difference]: Finished difference Result 577 states and 744 transitions. [2025-03-08 22:50:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-08 22:50:53,216 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 3.235294117647059) internal successors, (110), 35 states have internal predecessors, (110), 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 39 [2025-03-08 22:50:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:53,218 INFO L225 Difference]: With dead ends: 577 [2025-03-08 22:50:53,218 INFO L226 Difference]: Without dead ends: 577 [2025-03-08 22:50:53,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=437, Invalid=1970, Unknown=51, NotChecked=194, Total=2652 [2025-03-08 22:50:53,219 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 993 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 720 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:53,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1323 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1787 Invalid, 0 Unknown, 720 Unchecked, 0.9s Time] [2025-03-08 22:50:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2025-03-08 22:50:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 389. [2025-03-08 22:50:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 367 states have (on average 1.4277929155313351) internal successors, (524), 388 states have internal predecessors, (524), 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 22:50:53,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 524 transitions. [2025-03-08 22:50:53,225 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 524 transitions. Word has length 39 [2025-03-08 22:50:53,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:53,225 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 524 transitions. [2025-03-08 22:50:53,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 3.235294117647059) internal successors, (110), 35 states have internal predecessors, (110), 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 22:50:53,225 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 524 transitions. [2025-03-08 22:50:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-08 22:50:53,225 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:53,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:53,235 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 22:50:53,426 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,SelfDestructingSolverStorable26 [2025-03-08 22:50:53,426 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:53,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:53,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1787533753, now seen corresponding path program 1 times [2025-03-08 22:50:53,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:53,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563824625] [2025-03-08 22:50:53,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:53,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:53,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-08 22:50:53,440 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-08 22:50:53,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:53,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563824625] [2025-03-08 22:50:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563824625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 22:50:53,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 22:50:53,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-08 22:50:53,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085349321] [2025-03-08 22:50:53,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 22:50:53,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-08 22:50:53,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 22:50:53,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-08 22:50:53,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-03-08 22:50:53,778 INFO L87 Difference]: Start difference. First operand 389 states and 524 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 22:50:54,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 22:50:54,247 INFO L93 Difference]: Finished difference Result 510 states and 671 transitions. [2025-03-08 22:50:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 22:50:54,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 39 [2025-03-08 22:50:54,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 22:50:54,248 INFO L225 Difference]: With dead ends: 510 [2025-03-08 22:50:54,249 INFO L226 Difference]: Without dead ends: 510 [2025-03-08 22:50:54,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2025-03-08 22:50:54,249 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 166 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 22:50:54,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 688 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 22:50:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2025-03-08 22:50:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 454. [2025-03-08 22:50:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 432 states have (on average 1.4375) internal successors, (621), 453 states have internal predecessors, (621), 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 22:50:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 621 transitions. [2025-03-08 22:50:54,257 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 621 transitions. Word has length 39 [2025-03-08 22:50:54,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 22:50:54,258 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 621 transitions. [2025-03-08 22:50:54,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 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 22:50:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 621 transitions. [2025-03-08 22:50:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-03-08 22:50:54,258 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 22:50:54,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 22:50:54,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-08 22:50:54,259 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 53 more)] === [2025-03-08 22:50:54,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 22:50:54,259 INFO L85 PathProgramCache]: Analyzing trace with hash -514112108, now seen corresponding path program 1 times [2025-03-08 22:50:54,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 22:50:54,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783854460] [2025-03-08 22:50:54,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:54,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 22:50:54,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-08 22:50:54,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 22:50:54,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:54,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:54,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 22:50:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783854460] [2025-03-08 22:50:54,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783854460] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 22:50:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537912432] [2025-03-08 22:50:54,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 22:50:54,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 22:50:54,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 22:50:54,908 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 22:50:54,910 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 22:50:54,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-08 22:50:54,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-08 22:50:54,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 22:50:54,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 22:50:54,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-08 22:50:54,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 22:50:55,071 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-08 22:50:55,072 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 22:50:55,102 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 19 treesize of output 1 [2025-03-08 22:50:55,160 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:50:55,161 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 42 treesize of output 41 [2025-03-08 22:50:55,196 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-08 22:50:55,197 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 42 treesize of output 41 [2025-03-08 22:50:55,276 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 31 treesize of output 13 [2025-03-08 22:50:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 22:50:55,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 22:50:55,400 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_813 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) v_ArrVal_813) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false [2025-03-08 22:50:55,404 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (Array Int Int)) (v_ArrVal_813 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem21#1.base| v_ArrVal_812))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4)) v_ArrVal_813)) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false [2025-03-08 22:50:55,407 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (Array Int Int)) (v_ArrVal_813 (Array Int Int))) (= (select |c_#valid| (select (select (let ((.cse1 (+ |c_ULTIMATE.start_main_~n~0#1.offset| 4))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_812))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~n~0#1.base|) .cse1) v_ArrVal_813))) |c_ULTIMATE.start_main_~root~0#1.base|) (+ |c_ULTIMATE.start_main_~root~0#1.offset| 4))) 1)) is different from false [2025-03-08 22:50:55,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:55,412 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 46 treesize of output 37 [2025-03-08 22:50:55,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:55,417 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 294 treesize of output 251 [2025-03-08 22:50:55,422 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 191 treesize of output 175 [2025-03-08 22:50:55,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:50:55,432 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 175 treesize of output 159 [2025-03-08 22:51:01,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 22:51:01,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 27 select indices, 27 select index equivalence classes, 0 disjoint index pairs (out of 351 index pairs), introduced 27 new quantified variables, introduced 351 case distinctions, treesize of input 397 treesize of output 3139