./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/verifythis/elimination_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/verifythis/elimination_max.c -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 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:23:24,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:23:24,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 00:23:24,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:23:24,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:23:24,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:23:24,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:23:24,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:23:24,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:23:24,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:23:24,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:23:24,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:23:24,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:23:24,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:23:24,181 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:23:24,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:23:24,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 00:23:24,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:23:24,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 00:23:24,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:23:24,184 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:23:24,186 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:23:24,186 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:23:24,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:23:24,187 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:23:24,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:23:24,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:23:24,187 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 00:23:24,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:23:24,187 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:23:24,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:23:24,188 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:23:24,188 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:23:24,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:23:24,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:23:24,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:23:24,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:23:24,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:23:24,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:23:24,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:23:24,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:23:24,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:23:24,189 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e [2024-11-17 00:23:24,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:23:24,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:23:24,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:23:24,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:23:24,410 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:23:24,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max.c [2024-11-17 00:23:25,571 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:23:25,732 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:23:25,733 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max.c [2024-11-17 00:23:25,741 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ceb7cb2e/2dedfd0974df4b31bce4bcb0c43e32bc/FLAG889f0bdeb [2024-11-17 00:23:25,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ceb7cb2e/2dedfd0974df4b31bce4bcb0c43e32bc [2024-11-17 00:23:25,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:23:25,759 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:23:25,761 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:23:25,761 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:23:25,765 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:23:25,766 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:25,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f6e453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25, skipping insertion in model container [2024-11-17 00:23:25,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:25,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:23:25,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:23:25,955 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:23:25,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:23:25,989 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:23:25,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25 WrapperNode [2024-11-17 00:23:25,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:23:25,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:23:25,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:23:25,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:23:25,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,024 INFO L138 Inliner]: procedures = 18, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-11-17 00:23:26,026 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:23:26,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:23:26,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:23:26,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:23:26,034 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,054 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 00:23:26,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,058 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:23:26,066 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:23:26,066 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:23:26,066 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:23:26,067 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (1/1) ... [2024-11-17 00:23:26,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:23:26,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:26,092 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) [2024-11-17 00:23:26,093 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 [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-17 00:23:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:23:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 00:23:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 00:23:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-17 00:23:26,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-17 00:23:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:23:26,226 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:23:26,227 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:23:26,394 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-17 00:23:26,394 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:23:26,410 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:23:26,410 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:23:26,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:23:26 BoogieIcfgContainer [2024-11-17 00:23:26,411 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:23:26,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:23:26,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:23:26,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:23:26,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:23:25" (1/3) ... [2024-11-17 00:23:26,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334220e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:23:26, skipping insertion in model container [2024-11-17 00:23:26,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:23:25" (2/3) ... [2024-11-17 00:23:26,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@334220e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:23:26, skipping insertion in model container [2024-11-17 00:23:26,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:23:26" (3/3) ... [2024-11-17 00:23:26,419 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2024-11-17 00:23:26,432 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:23:26,432 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-17 00:23:26,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:23:26,469 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;@4f042993, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:23:26,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-17 00:23:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 51 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:23:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-17 00:23:26,477 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:26,477 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:26,478 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:26,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:26,483 INFO L85 PathProgramCache]: Analyzing trace with hash -24548968, now seen corresponding path program 1 times [2024-11-17 00:23:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:26,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669649573] [2024-11-17 00:23:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:26,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:26,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669649573] [2024-11-17 00:23:26,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669649573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:26,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:26,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:23:26,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649984414] [2024-11-17 00:23:26,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:26,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 00:23:26,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:26,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 00:23:26,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 00:23:26,640 INFO L87 Difference]: Start difference. First operand has 58 states, 34 states have (on average 1.7058823529411764) internal successors, (58), 51 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:26,651 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2024-11-17 00:23:26,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 00:23:26,653 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-17 00:23:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:26,657 INFO L225 Difference]: With dead ends: 57 [2024-11-17 00:23:26,658 INFO L226 Difference]: Without dead ends: 54 [2024-11-17 00:23:26,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 00:23:26,661 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:26,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:23:26,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-17 00:23:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-17 00:23:26,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 47 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:23:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-17 00:23:26,686 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 12 [2024-11-17 00:23:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:26,686 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-17 00:23:26,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-17 00:23:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-17 00:23:26,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:26,687 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:26,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:23:26,688 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:26,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1718261367, now seen corresponding path program 1 times [2024-11-17 00:23:26,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:26,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206272418] [2024-11-17 00:23:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:26,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:26,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:26,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:26,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206272418] [2024-11-17 00:23:26,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206272418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:26,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:26,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:23:26,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003970492] [2024-11-17 00:23:26,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:26,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:23:26,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:23:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:23:26,837 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:26,921 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2024-11-17 00:23:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:23:26,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-17 00:23:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:26,923 INFO L225 Difference]: With dead ends: 47 [2024-11-17 00:23:26,924 INFO L226 Difference]: Without dead ends: 47 [2024-11-17 00:23:26,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:23:26,925 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:26,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 69 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-17 00:23:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-17 00:23:26,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 40 states have internal predecessors, (43), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:23:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2024-11-17 00:23:26,934 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 12 [2024-11-17 00:23:26,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:26,935 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2024-11-17 00:23:26,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2024-11-17 00:23:26,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-17 00:23:26,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:26,936 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:26,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:23:26,937 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:26,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:26,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1718261368, now seen corresponding path program 1 times [2024-11-17 00:23:26,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173392840] [2024-11-17 00:23:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:27,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:27,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:27,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173392840] [2024-11-17 00:23:27,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173392840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:27,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:27,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:23:27,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768209732] [2024-11-17 00:23:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:27,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:23:27,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:27,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:23:27,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:23:27,242 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:27,450 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-11-17 00:23:27,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:23:27,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-17 00:23:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:27,452 INFO L225 Difference]: With dead ends: 67 [2024-11-17 00:23:27,453 INFO L226 Difference]: Without dead ends: 67 [2024-11-17 00:23:27,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:23:27,454 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 59 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:27,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 153 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-17 00:23:27,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-17 00:23:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 57 states have internal predecessors, (67), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-17 00:23:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2024-11-17 00:23:27,465 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 12 [2024-11-17 00:23:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:27,465 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2024-11-17 00:23:27,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2024-11-17 00:23:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-17 00:23:27,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:27,466 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:27,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:23:27,466 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:27,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:27,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1726494832, now seen corresponding path program 1 times [2024-11-17 00:23:27,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:27,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727636092] [2024-11-17 00:23:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:27,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:27,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:27,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:27,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:27,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727636092] [2024-11-17 00:23:27,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727636092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:27,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:27,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 00:23:27,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259274682] [2024-11-17 00:23:27,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:27,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:23:27,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:23:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:23:27,704 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:27,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:27,843 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2024-11-17 00:23:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:23:27,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-17 00:23:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:27,845 INFO L225 Difference]: With dead ends: 72 [2024-11-17 00:23:27,845 INFO L226 Difference]: Without dead ends: 72 [2024-11-17 00:23:27,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:23:27,846 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 49 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:27,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 174 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:27,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-17 00:23:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-17 00:23:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 62 states have internal predecessors, (74), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-17 00:23:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2024-11-17 00:23:27,851 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 13 [2024-11-17 00:23:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:27,851 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2024-11-17 00:23:27,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2024-11-17 00:23:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-17 00:23:27,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:27,852 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:27,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:23:27,852 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:27,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2015270175, now seen corresponding path program 1 times [2024-11-17 00:23:27,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:27,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069530773] [2024-11-17 00:23:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:23:28,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:28,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069530773] [2024-11-17 00:23:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069530773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:28,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:28,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:23:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900086995] [2024-11-17 00:23:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:28,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:23:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:23:28,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:23:28,044 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:28,186 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2024-11-17 00:23:28,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:23:28,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2024-11-17 00:23:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:28,187 INFO L225 Difference]: With dead ends: 87 [2024-11-17 00:23:28,187 INFO L226 Difference]: Without dead ends: 87 [2024-11-17 00:23:28,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:23:28,188 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:28,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 154 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:28,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-17 00:23:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2024-11-17 00:23:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 64 states have internal predecessors, (76), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-17 00:23:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2024-11-17 00:23:28,193 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 18 [2024-11-17 00:23:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:28,193 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2024-11-17 00:23:28,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:28,193 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2024-11-17 00:23:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-17 00:23:28,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:28,193 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:28,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:23:28,194 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:28,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:28,194 INFO L85 PathProgramCache]: Analyzing trace with hash -836079466, now seen corresponding path program 1 times [2024-11-17 00:23:28,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:28,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059087884] [2024-11-17 00:23:28,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:28,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059087884] [2024-11-17 00:23:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059087884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:28,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572494820] [2024-11-17 00:23:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:28,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:28,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:28,318 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) [2024-11-17 00:23:28,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:23:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 00:23:28,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:28,495 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:23:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572494820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:28,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:23:28,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-17 00:23:28,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559870776] [2024-11-17 00:23:28,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:28,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:23:28,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:28,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:23:28,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:23:28,497 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:28,626 INFO L93 Difference]: Finished difference Result 91 states and 115 transitions. [2024-11-17 00:23:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:23:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-17 00:23:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:28,627 INFO L225 Difference]: With dead ends: 91 [2024-11-17 00:23:28,627 INFO L226 Difference]: Without dead ends: 91 [2024-11-17 00:23:28,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:23:28,628 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 34 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:28,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-17 00:23:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2024-11-17 00:23:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 74 states have internal predecessors, (89), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-17 00:23:28,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2024-11-17 00:23:28,634 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 17 [2024-11-17 00:23:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:28,634 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2024-11-17 00:23:28,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:28,635 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2024-11-17 00:23:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-17 00:23:28,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:28,635 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:28,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 00:23:28,836 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,SelfDestructingSolverStorable5 [2024-11-17 00:23:28,836 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:28,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:28,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1951133981, now seen corresponding path program 1 times [2024-11-17 00:23:28,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:28,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607903334] [2024-11-17 00:23:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:28,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:28,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:28,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607903334] [2024-11-17 00:23:28,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607903334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:28,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:23:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232266543] [2024-11-17 00:23:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:28,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:23:28,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:23:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:23:28,912 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:28,968 INFO L93 Difference]: Finished difference Result 99 states and 126 transitions. [2024-11-17 00:23:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:23:28,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-11-17 00:23:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:28,970 INFO L225 Difference]: With dead ends: 99 [2024-11-17 00:23:28,970 INFO L226 Difference]: Without dead ends: 99 [2024-11-17 00:23:28,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:23:28,971 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 26 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:28,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 148 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-17 00:23:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 88. [2024-11-17 00:23:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 74 states have internal predecessors, (89), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-17 00:23:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2024-11-17 00:23:28,981 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 19 [2024-11-17 00:23:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:28,982 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2024-11-17 00:23:28,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2024-11-17 00:23:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:23:28,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:28,984 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:28,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 00:23:28,984 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:28,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:28,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1668914154, now seen corresponding path program 1 times [2024-11-17 00:23:28,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:28,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048164760] [2024-11-17 00:23:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:29,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:29,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:29,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048164760] [2024-11-17 00:23:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048164760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:29,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:23:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183475476] [2024-11-17 00:23:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:29,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:23:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:23:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:23:29,132 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:29,235 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2024-11-17 00:23:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:23:29,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-17 00:23:29,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:29,237 INFO L225 Difference]: With dead ends: 92 [2024-11-17 00:23:29,237 INFO L226 Difference]: Without dead ends: 92 [2024-11-17 00:23:29,237 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:23:29,238 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:29,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 173 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-17 00:23:29,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-17 00:23:29,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 77 states have internal predecessors, (92), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-17 00:23:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2024-11-17 00:23:29,243 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 23 [2024-11-17 00:23:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:29,243 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2024-11-17 00:23:29,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2024-11-17 00:23:29,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:23:29,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:29,244 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:29,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 00:23:29,245 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:29,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash 634435199, now seen corresponding path program 1 times [2024-11-17 00:23:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194590546] [2024-11-17 00:23:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:29,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:29,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-17 00:23:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:23:29,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:29,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194590546] [2024-11-17 00:23:29,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194590546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:29,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438536061] [2024-11-17 00:23:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:29,365 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) [2024-11-17 00:23:29,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:23:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:29,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:23:29,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:23:29,509 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:23:29,759 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 36 treesize of output 32 [2024-11-17 00:23:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:23:29,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438536061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:23:29,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:23:29,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-17 00:23:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97962930] [2024-11-17 00:23:29,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:23:29,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 00:23:29,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:29,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 00:23:29,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:23:29,827 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 16 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:23:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:30,010 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2024-11-17 00:23:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:23:30,011 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2024-11-17 00:23:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:30,013 INFO L225 Difference]: With dead ends: 108 [2024-11-17 00:23:30,013 INFO L226 Difference]: Without dead ends: 108 [2024-11-17 00:23:30,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:23:30,014 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 37 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:30,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 239 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:23:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-17 00:23:30,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2024-11-17 00:23:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 65 states have (on average 1.2923076923076924) internal successors, (84), 72 states have internal predecessors, (84), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-17 00:23:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2024-11-17 00:23:30,018 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 23 [2024-11-17 00:23:30,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:30,018 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2024-11-17 00:23:30,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.8) internal successors, (42), 13 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:23:30,019 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2024-11-17 00:23:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-17 00:23:30,019 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:30,020 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:30,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 00:23:30,220 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,SelfDestructingSolverStorable8 [2024-11-17 00:23:30,220 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:30,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1807345345, now seen corresponding path program 1 times [2024-11-17 00:23:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199292084] [2024-11-17 00:23:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:30,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:30,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:30,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-17 00:23:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:30,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199292084] [2024-11-17 00:23:30,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199292084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:30,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199908298] [2024-11-17 00:23:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:30,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:30,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:30,312 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) [2024-11-17 00:23:30,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:23:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:30,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:23:30,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:30,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:30,487 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:23:30,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199908298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:30,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:23:30,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2024-11-17 00:23:30,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141258603] [2024-11-17 00:23:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:30,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:23:30,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:30,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:23:30,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:23:30,488 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:34,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:23:34,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:34,698 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2024-11-17 00:23:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:23:34,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-17 00:23:34,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:34,700 INFO L225 Difference]: With dead ends: 126 [2024-11-17 00:23:34,700 INFO L226 Difference]: Without dead ends: 126 [2024-11-17 00:23:34,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:23:34,700 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 68 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:34,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 286 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-17 00:23:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-17 00:23:34,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 96. [2024-11-17 00:23:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2432432432432432) internal successors, (92), 79 states have internal predecessors, (92), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-17 00:23:34,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 112 transitions. [2024-11-17 00:23:34,705 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 112 transitions. Word has length 24 [2024-11-17 00:23:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:34,705 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 112 transitions. [2024-11-17 00:23:34,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 00:23:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 112 transitions. [2024-11-17 00:23:34,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-17 00:23:34,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:34,706 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:34,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 00:23:34,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:34,910 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:34,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:34,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1792998095, now seen corresponding path program 1 times [2024-11-17 00:23:34,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:34,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354951810] [2024-11-17 00:23:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:34,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:34,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354951810] [2024-11-17 00:23:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354951810] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574088234] [2024-11-17 00:23:34,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:34,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:34,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:34,997 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) [2024-11-17 00:23:34,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:23:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:35,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:23:35,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:35,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:23:35,314 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 10 treesize of output 8 [2024-11-17 00:23:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:23:35,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574088234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:23:35,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:23:35,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-17 00:23:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811568433] [2024-11-17 00:23:35,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:23:35,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 00:23:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:35,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 00:23:35,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-17 00:23:35,354 INFO L87 Difference]: Start difference. First operand 96 states and 112 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:35,614 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2024-11-17 00:23:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:23:35,615 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-17 00:23:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:35,615 INFO L225 Difference]: With dead ends: 76 [2024-11-17 00:23:35,615 INFO L226 Difference]: Without dead ends: 76 [2024-11-17 00:23:35,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-17 00:23:35,616 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 54 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:35,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 224 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-17 00:23:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2024-11-17 00:23:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 59 states have internal predecessors, (65), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-17 00:23:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 79 transitions. [2024-11-17 00:23:35,619 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 79 transitions. Word has length 23 [2024-11-17 00:23:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:35,619 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 79 transitions. [2024-11-17 00:23:35,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:23:35,619 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 79 transitions. [2024-11-17 00:23:35,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-17 00:23:35,620 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:35,620 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:35,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-17 00:23:35,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:35,825 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:35,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:35,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1355392197, now seen corresponding path program 1 times [2024-11-17 00:23:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:35,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977341440] [2024-11-17 00:23:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:35,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:35,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:35,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:35,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 00:23:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:35,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:35,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977341440] [2024-11-17 00:23:35,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977341440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:35,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:35,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 00:23:35,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412551515] [2024-11-17 00:23:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:35,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:23:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:23:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 00:23:35,897 INFO L87 Difference]: Start difference. First operand 73 states and 79 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:23:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:35,985 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2024-11-17 00:23:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:23:35,987 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-11-17 00:23:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:35,987 INFO L225 Difference]: With dead ends: 87 [2024-11-17 00:23:35,988 INFO L226 Difference]: Without dead ends: 87 [2024-11-17 00:23:35,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:23:35,988 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 48 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:35,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 126 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:35,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-17 00:23:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 56. [2024-11-17 00:23:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 47 states have internal predecessors, (50), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 00:23:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2024-11-17 00:23:35,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 28 [2024-11-17 00:23:35,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:35,995 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2024-11-17 00:23:35,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:23:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2024-11-17 00:23:35,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-17 00:23:35,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:35,995 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:35,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 00:23:35,995 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:35,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash -932516084, now seen corresponding path program 1 times [2024-11-17 00:23:35,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:35,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224024986] [2024-11-17 00:23:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:35,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:36,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 00:23:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:36,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:36,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224024986] [2024-11-17 00:23:36,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224024986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:36,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:36,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:23:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729272274] [2024-11-17 00:23:36,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:36,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:23:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:36,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:23:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:23:36,034 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:23:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:36,063 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2024-11-17 00:23:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:23:36,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2024-11-17 00:23:36,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:36,065 INFO L225 Difference]: With dead ends: 55 [2024-11-17 00:23:36,065 INFO L226 Difference]: Without dead ends: 55 [2024-11-17 00:23:36,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:23:36,066 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:36,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 67 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:23:36,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-17 00:23:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-17 00:23:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 46 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 00:23:36,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2024-11-17 00:23:36,068 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 29 [2024-11-17 00:23:36,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:36,068 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2024-11-17 00:23:36,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:23:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2024-11-17 00:23:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-17 00:23:36,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:36,069 INFO L215 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] [2024-11-17 00:23:36,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 00:23:36,069 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:36,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash -314526232, now seen corresponding path program 1 times [2024-11-17 00:23:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:36,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840465150] [2024-11-17 00:23:36,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:36,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 00:23:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:36,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:36,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840465150] [2024-11-17 00:23:36,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840465150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:36,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:36,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:23:36,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861138966] [2024-11-17 00:23:36,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:36,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:23:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:23:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:23:36,178 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:23:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:36,258 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2024-11-17 00:23:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:23:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-17 00:23:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:36,259 INFO L225 Difference]: With dead ends: 53 [2024-11-17 00:23:36,259 INFO L226 Difference]: Without dead ends: 53 [2024-11-17 00:23:36,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:23:36,259 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:36,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 177 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-17 00:23:36,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-17 00:23:36,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 42 states have (on average 1.119047619047619) internal successors, (47), 44 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 00:23:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2024-11-17 00:23:36,262 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 33 [2024-11-17 00:23:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:36,262 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2024-11-17 00:23:36,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:23:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2024-11-17 00:23:36,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-17 00:23:36,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:36,263 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:36,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 00:23:36,263 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:36,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1409728791, now seen corresponding path program 1 times [2024-11-17 00:23:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:36,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292931304] [2024-11-17 00:23:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 00:23:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:36,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:36,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292931304] [2024-11-17 00:23:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292931304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:36,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:23:36,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 00:23:36,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861204886] [2024-11-17 00:23:36,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:36,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 00:23:36,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:36,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 00:23:36,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:23:36,329 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:23:36,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:36,367 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-17 00:23:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 00:23:36,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-17 00:23:36,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:36,368 INFO L225 Difference]: With dead ends: 52 [2024-11-17 00:23:36,368 INFO L226 Difference]: Without dead ends: 46 [2024-11-17 00:23:36,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 00:23:36,370 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:36,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:23:36,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-17 00:23:36,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-17 00:23:36,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 37 states have internal predecessors, (39), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 00:23:36,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-17 00:23:36,372 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 33 [2024-11-17 00:23:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:36,372 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-17 00:23:36,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:23:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-17 00:23:36,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-17 00:23:36,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:36,373 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:36,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 00:23:36,373 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:36,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:36,373 INFO L85 PathProgramCache]: Analyzing trace with hash 51511997, now seen corresponding path program 1 times [2024-11-17 00:23:36,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465544448] [2024-11-17 00:23:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:36,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 00:23:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-17 00:23:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-17 00:23:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:23:36,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465544448] [2024-11-17 00:23:36,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465544448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:36,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604340069] [2024-11-17 00:23:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:36,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:36,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:36,471 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) [2024-11-17 00:23:36,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:23:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 00:23:36,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:23:36,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:23:36,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604340069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:23:36,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:23:36,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-17 00:23:36,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141027158] [2024-11-17 00:23:36,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:23:36,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 00:23:36,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:36,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 00:23:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:23:36,585 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:23:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:36,619 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2024-11-17 00:23:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 00:23:36,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-17 00:23:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:36,620 INFO L225 Difference]: With dead ends: 61 [2024-11-17 00:23:36,620 INFO L226 Difference]: Without dead ends: 43 [2024-11-17 00:23:36,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:23:36,621 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:36,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-17 00:23:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-17 00:23:36,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-17 00:23:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-17 00:23:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2024-11-17 00:23:36,623 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 38 [2024-11-17 00:23:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:36,623 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2024-11-17 00:23:36,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-17 00:23:36,623 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2024-11-17 00:23:36,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-17 00:23:36,624 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:36,624 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:36,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 00:23:36,827 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,SelfDestructingSolverStorable15 [2024-11-17 00:23:36,828 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:36,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash -371895461, now seen corresponding path program 1 times [2024-11-17 00:23:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:36,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364714833] [2024-11-17 00:23:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:36,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-17 00:23:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-17 00:23:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-17 00:23:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:23:36,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:36,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364714833] [2024-11-17 00:23:36,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364714833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:36,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443087243] [2024-11-17 00:23:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:36,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:36,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:36,957 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) [2024-11-17 00:23:36,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:23:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:37,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 00:23:37,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:23:37,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:23:37,324 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 24 treesize of output 20 [2024-11-17 00:23:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-17 00:23:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443087243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:23:37,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:23:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2024-11-17 00:23:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520483638] [2024-11-17 00:23:37,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:23:37,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 00:23:37,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:37,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 00:23:37,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-17 00:23:37,379 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 22 states have internal predecessors, (77), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 00:23:41,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:23:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:41,614 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2024-11-17 00:23:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:23:41,615 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 22 states have internal predecessors, (77), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 43 [2024-11-17 00:23:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:41,615 INFO L225 Difference]: With dead ends: 52 [2024-11-17 00:23:41,615 INFO L226 Difference]: Without dead ends: 52 [2024-11-17 00:23:41,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2024-11-17 00:23:41,616 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:41,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 169 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 299 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-17 00:23:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-17 00:23:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-17 00:23:41,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 00:23:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2024-11-17 00:23:41,617 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 43 [2024-11-17 00:23:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:41,618 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2024-11-17 00:23:41,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 22 states have internal predecessors, (77), 7 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 00:23:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2024-11-17 00:23:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-17 00:23:41,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:41,618 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:41,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 00:23:41,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-17 00:23:41,819 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:41,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1176703533, now seen corresponding path program 2 times [2024-11-17 00:23:41,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:41,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410759802] [2024-11-17 00:23:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:41,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:41,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:41,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-17 00:23:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:41,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-17 00:23:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:41,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-17 00:23:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:41,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-17 00:23:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 00:23:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410759802] [2024-11-17 00:23:41,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410759802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:41,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380342961] [2024-11-17 00:23:41,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:23:41,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:41,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:23:41,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:23:41,992 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:23:41,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:23:41,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 00:23:41,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 00:23:42,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:23:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 00:23:42,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380342961] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:23:42,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:23:42,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-11-17 00:23:42,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652127630] [2024-11-17 00:23:42,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:23:42,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 00:23:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 00:23:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:23:42,176 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:23:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:42,251 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2024-11-17 00:23:42,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:23:42,251 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 53 [2024-11-17 00:23:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:42,252 INFO L225 Difference]: With dead ends: 74 [2024-11-17 00:23:42,252 INFO L226 Difference]: Without dead ends: 54 [2024-11-17 00:23:42,252 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:23:42,252 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 8 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:42,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 235 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-17 00:23:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-17 00:23:42,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 00:23:42,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2024-11-17 00:23:42,254 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 53 [2024-11-17 00:23:42,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:42,254 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2024-11-17 00:23:42,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 16 states have internal predecessors, (69), 7 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:23:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2024-11-17 00:23:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-17 00:23:42,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:23:42,255 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:42,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-17 00:23:42,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:42,455 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 14 more)] === [2024-11-17 00:23:42,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:23:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash -501838475, now seen corresponding path program 3 times [2024-11-17 00:23:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:23:42,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004586981] [2024-11-17 00:23:42,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:23:42,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:23:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:42,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:23:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:42,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-17 00:23:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:42,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-17 00:23:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:42,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-17 00:23:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:42,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-17 00:23:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:23:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 00:23:42,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:23:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004586981] [2024-11-17 00:23:42,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004586981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:23:42,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335561908] [2024-11-17 00:23:42,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 00:23:42,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:42,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:23:42,615 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:23:42,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:23:42,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 00:23:42,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:23:42,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 00:23:42,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:23:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-17 00:23:42,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:23:42,945 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 13 treesize of output 11 [2024-11-17 00:23:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-17 00:23:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335561908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:23:42,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:23:42,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-11-17 00:23:42,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053840181] [2024-11-17 00:23:42,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:23:42,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 00:23:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:23:42,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 00:23:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-17 00:23:42,984 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-17 00:23:43,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:23:43,267 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2024-11-17 00:23:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:23:43,268 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) Word has length 58 [2024-11-17 00:23:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:23:43,268 INFO L225 Difference]: With dead ends: 59 [2024-11-17 00:23:43,268 INFO L226 Difference]: Without dead ends: 0 [2024-11-17 00:23:43,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2024-11-17 00:23:43,269 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 68 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:23:43,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 180 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:23:43,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-17 00:23:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-17 00:23:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 00:23:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-17 00:23:43,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2024-11-17 00:23:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:23:43,269 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 00:23:43,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.9473684210526314) internal successors, (75), 20 states have internal predecessors, (75), 9 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-17 00:23:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-17 00:23:43,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (16 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (15 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (14 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (13 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2024-11-17 00:23:43,272 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2024-11-17 00:23:43,273 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2024-11-17 00:23:43,273 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2024-11-17 00:23:43,273 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2024-11-17 00:23:43,273 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2024-11-17 00:23:43,273 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2024-11-17 00:23:43,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 00:23:43,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:23:43,476 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:23:43,477 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-17 00:23:43,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:23:43 BoogieIcfgContainer [2024-11-17 00:23:43,479 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-17 00:23:43,479 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 00:23:43,479 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 00:23:43,479 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 00:23:43,480 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:23:26" (3/4) ... [2024-11-17 00:23:43,481 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-17 00:23:43,484 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-17 00:23:43,484 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-17 00:23:43,487 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-17 00:23:43,487 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-17 00:23:43,488 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-17 00:23:43,488 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-17 00:23:43,570 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-17 00:23:43,570 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-17 00:23:43,570 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 00:23:43,570 INFO L158 Benchmark]: Toolchain (without parser) took 17811.82ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 121.4MB in the beginning and 216.1MB in the end (delta: -94.7MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2024-11-17 00:23:43,571 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 00:23:43,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.11ms. Allocated memory is still 188.7MB. Free memory was 121.1MB in the beginning and 108.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-17 00:23:43,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.69ms. Allocated memory is still 188.7MB. Free memory was 108.8MB in the beginning and 107.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 00:23:43,571 INFO L158 Benchmark]: Boogie Preprocessor took 38.34ms. Allocated memory is still 188.7MB. Free memory was 107.0MB in the beginning and 105.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 00:23:43,571 INFO L158 Benchmark]: IcfgBuilder took 345.32ms. Allocated memory is still 188.7MB. Free memory was 105.2MB in the beginning and 147.9MB in the end (delta: -42.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2024-11-17 00:23:43,572 INFO L158 Benchmark]: TraceAbstraction took 17065.73ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 146.8MB in the beginning and 221.3MB in the end (delta: -74.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2024-11-17 00:23:43,572 INFO L158 Benchmark]: Witness Printer took 90.56ms. Allocated memory is still 297.8MB. Free memory was 221.3MB in the beginning and 216.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-17 00:23:43,573 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 154.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.11ms. Allocated memory is still 188.7MB. Free memory was 121.1MB in the beginning and 108.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.69ms. Allocated memory is still 188.7MB. Free memory was 108.8MB in the beginning and 107.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.34ms. Allocated memory is still 188.7MB. Free memory was 107.0MB in the beginning and 105.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 345.32ms. Allocated memory is still 188.7MB. Free memory was 105.2MB in the beginning and 147.9MB in the end (delta: -42.7MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * TraceAbstraction took 17065.73ms. Allocated memory was 188.7MB in the beginning and 297.8MB in the end (delta: 109.1MB). Free memory was 146.8MB in the beginning and 221.3MB in the end (delta: -74.5MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * Witness Printer took 90.56ms. Allocated memory is still 297.8MB. Free memory was 221.3MB in the beginning and 216.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 5]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 17.0s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 651 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 613 mSDsluCounter, 2946 SdHoareTripleChecker+Invalid, 9.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2242 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2806 IncrementalHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 704 mSDtfsCounter, 2806 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 721 GetRequests, 505 SyntacticMatches, 11 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=10, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 124 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 790 NumberOfCodeBlocks, 770 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 958 ConstructedInterpolants, 16 QuantifiedInterpolants, 5751 SizeOfPredicates, 30 NumberOfNonLiveVariables, 980 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 32 InterpolantComputations, 14 PerfectInterpolantSequences, 272/367 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-17 00:23:43,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE