./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 15:01:25,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 15:01:25,857 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 15:01:25,860 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 15:01:25,861 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 15:01:25,881 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 15:01:25,882 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 15:01:25,882 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 15:01:25,883 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 15:01:25,883 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 15:01:25,883 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 15:01:25,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 15:01:25,884 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 15:01:25,884 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 15:01:25,885 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 15:01:25,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 15:01:25,885 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 15:01:25,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 15:01:25,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 15:01:25,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 15:01:25,886 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 15:01:25,887 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 15:01:25,887 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 15:01:25,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 15:01:25,887 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 15:01:25,888 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 15:01:25,888 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 15:01:25,888 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 15:01:25,888 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 15:01:25,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 15:01:25,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 15:01:25,889 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 15:01:25,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 15:01:25,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 15:01:25,890 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 15:01:25,890 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 15:01:25,890 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 15:01:25,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 15:01:25,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 15:01:25,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 15:01:25,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 15:01:25,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 15:01:25,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2024-11-20 15:01:26,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 15:01:26,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 15:01:26,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 15:01:26,113 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 15:01:26,113 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 15:01:26,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-20 15:01:27,351 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 15:01:27,513 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 15:01:27,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-20 15:01:27,521 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439d7fc35/ef15f014da494c389f6539e9f7030372/FLAG0b683d423 [2024-11-20 15:01:27,908 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/439d7fc35/ef15f014da494c389f6539e9f7030372 [2024-11-20 15:01:27,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 15:01:27,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 15:01:27,913 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 15:01:27,913 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 15:01:27,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 15:01:27,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:27" (1/1) ... [2024-11-20 15:01:27,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1407beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:27, skipping insertion in model container [2024-11-20 15:01:27,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:01:27" (1/1) ... [2024-11-20 15:01:27,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 15:01:28,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 15:01:28,103 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 15:01:28,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 15:01:28,137 INFO L204 MainTranslator]: Completed translation [2024-11-20 15:01:28,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28 WrapperNode [2024-11-20 15:01:28,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 15:01:28,139 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 15:01:28,139 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 15:01:28,139 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 15:01:28,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,165 INFO L138 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2024-11-20 15:01:28,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 15:01:28,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 15:01:28,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 15:01:28,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 15:01:28,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,176 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,187 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 1, 10]. 77 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-20 15:01:28,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,200 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 15:01:28,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 15:01:28,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 15:01:28,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 15:01:28,204 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (1/1) ... [2024-11-20 15:01:28,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 15:01:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:28,229 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) [2024-11-20 15:01:28,236 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 [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 15:01:28,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 15:01:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 15:01:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 15:01:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 15:01:28,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 15:01:28,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 15:01:28,321 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 15:01:28,323 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 15:01:28,570 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-11-20 15:01:28,571 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 15:01:28,580 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 15:01:28,581 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-20 15:01:28,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:28 BoogieIcfgContainer [2024-11-20 15:01:28,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 15:01:28,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 15:01:28,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 15:01:28,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 15:01:28,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:01:27" (1/3) ... [2024-11-20 15:01:28,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7c8bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:01:28, skipping insertion in model container [2024-11-20 15:01:28,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:01:28" (2/3) ... [2024-11-20 15:01:28,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7c8bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:01:28, skipping insertion in model container [2024-11-20 15:01:28,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:28" (3/3) ... [2024-11-20 15:01:28,588 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-20 15:01:28,601 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 15:01:28,618 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-20 15:01:28,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 15:01:28,669 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;@41d5ebb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 15:01:28,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-20 15:01:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 55 states have (on average 1.8) internal successors, (99), 79 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:01:28,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:28,676 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:01:28,677 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:28,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-20 15:01:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:28,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923552846] [2024-11-20 15:01:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:28,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923552846] [2024-11-20 15:01:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923552846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 15:01:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780923053] [2024-11-20 15:01:28,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:28,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:01:28,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:01:28,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:28,886 INFO L87 Difference]: Start difference. First operand has 80 states, 55 states have (on average 1.8) internal successors, (99), 79 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:28,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:28,950 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-11-20 15:01:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:01:28,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 15:01:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:28,958 INFO L225 Difference]: With dead ends: 77 [2024-11-20 15:01:28,958 INFO L226 Difference]: Without dead ends: 75 [2024-11-20 15:01:28,960 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:28,962 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 76 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:28,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 64 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:28,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-20 15:01:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-20 15:01:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 74 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-11-20 15:01:28,988 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 4 [2024-11-20 15:01:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:28,988 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-11-20 15:01:28,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-11-20 15:01:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-20 15:01:28,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:28,989 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-20 15:01:28,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 15:01:28,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:28,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-20 15:01:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:28,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52483585] [2024-11-20 15:01:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:29,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:29,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52483585] [2024-11-20 15:01:29,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52483585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:29,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:29,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 15:01:29,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618735742] [2024-11-20 15:01:29,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:29,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:01:29,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:29,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:01:29,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:29,088 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:29,139 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-20 15:01:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:01:29,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-20 15:01:29,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:29,140 INFO L225 Difference]: With dead ends: 79 [2024-11-20 15:01:29,140 INFO L226 Difference]: Without dead ends: 79 [2024-11-20 15:01:29,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:29,141 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:29,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-20 15:01:29,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-20 15:01:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 76 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2024-11-20 15:01:29,153 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 4 [2024-11-20 15:01:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:29,153 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2024-11-20 15:01:29,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2024-11-20 15:01:29,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 15:01:29,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:29,154 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:29,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 15:01:29,154 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:29,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:29,156 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2024-11-20 15:01:29,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:29,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469913524] [2024-11-20 15:01:29,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:29,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:29,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:29,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:29,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469913524] [2024-11-20 15:01:29,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469913524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:29,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731477744] [2024-11-20 15:01:29,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:29,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:29,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:29,267 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) [2024-11-20 15:01:29,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 15:01:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:29,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 15:01:29,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:29,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:29,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:29,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731477744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:29,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:29,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-20 15:01:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554998339] [2024-11-20 15:01:29,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:29,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 15:01:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 15:01:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-20 15:01:29,490 INFO L87 Difference]: Start difference. First operand 77 states and 90 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:29,583 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-11-20 15:01:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 15:01:29,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 15:01:29,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:29,584 INFO L225 Difference]: With dead ends: 89 [2024-11-20 15:01:29,584 INFO L226 Difference]: Without dead ends: 89 [2024-11-20 15:01:29,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-20 15:01:29,585 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 8 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:29,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 202 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-20 15:01:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-20 15:01:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 88 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2024-11-20 15:01:29,589 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 8 [2024-11-20 15:01:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:29,590 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2024-11-20 15:01:29,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2024-11-20 15:01:29,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-20 15:01:29,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:29,590 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-20 15:01:29,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:29,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:29,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:29,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:29,793 INFO L85 PathProgramCache]: Analyzing trace with hash -4646110, now seen corresponding path program 1 times [2024-11-20 15:01:29,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:29,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550017312] [2024-11-20 15:01:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:29,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 15:01:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550017312] [2024-11-20 15:01:29,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550017312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:29,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:29,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 15:01:29,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549786384] [2024-11-20 15:01:29,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:29,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:01:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:29,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:01:29,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:29,873 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:29,910 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2024-11-20 15:01:29,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:01:29,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-20 15:01:29,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:29,911 INFO L225 Difference]: With dead ends: 88 [2024-11-20 15:01:29,913 INFO L226 Difference]: Without dead ends: 88 [2024-11-20 15:01:29,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:29,914 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 1 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:29,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:29,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-20 15:01:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-20 15:01:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.537313432835821) internal successors, (103), 87 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2024-11-20 15:01:29,923 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 13 [2024-11-20 15:01:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:29,923 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2024-11-20 15:01:29,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2024-11-20 15:01:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-20 15:01:29,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:29,925 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:29,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 15:01:29,925 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:29,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -108924891, now seen corresponding path program 1 times [2024-11-20 15:01:29,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:29,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705784349] [2024-11-20 15:01:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:29,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-20 15:01:29,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:29,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705784349] [2024-11-20 15:01:29,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705784349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 15:01:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549681914] [2024-11-20 15:01:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:29,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:01:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:01:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:01:30,000 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:30,050 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2024-11-20 15:01:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:01:30,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-20 15:01:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:30,052 INFO L225 Difference]: With dead ends: 88 [2024-11-20 15:01:30,052 INFO L226 Difference]: Without dead ends: 88 [2024-11-20 15:01:30,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:01:30,054 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 130 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:30,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 62 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-20 15:01:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-20 15:01:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 87 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2024-11-20 15:01:30,063 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 17 [2024-11-20 15:01:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:30,064 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2024-11-20 15:01:30,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2024-11-20 15:01:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-20 15:01:30,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:30,064 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:30,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 15:01:30,065 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:30,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash -108927737, now seen corresponding path program 1 times [2024-11-20 15:01:30,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:30,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414212319] [2024-11-20 15:01:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:30,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:30,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:30,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414212319] [2024-11-20 15:01:30,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414212319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:30,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675339028] [2024-11-20 15:01:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:30,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:30,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:30,113 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) [2024-11-20 15:01:30,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 15:01:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:30,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 15:01:30,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:30,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:30,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:30,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:30,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675339028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:30,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-20 15:01:30,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193134100] [2024-11-20 15:01:30,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:30,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 15:01:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 15:01:30,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-20 15:01:30,212 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:30,236 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2024-11-20 15:01:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 15:01:30,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-20 15:01:30,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:30,237 INFO L225 Difference]: With dead ends: 95 [2024-11-20 15:01:30,238 INFO L226 Difference]: Without dead ends: 95 [2024-11-20 15:01:30,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-20 15:01:30,238 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 6 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:30,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 243 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-20 15:01:30,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-20 15:01:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 94 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2024-11-20 15:01:30,242 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 17 [2024-11-20 15:01:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:30,242 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2024-11-20 15:01:30,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2024-11-20 15:01:30,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-20 15:01:30,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:30,243 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2024-11-20 15:01:30,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 15:01:30,443 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,SelfDestructingSolverStorable5 [2024-11-20 15:01:30,443 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:30,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2024-11-20 15:01:30,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:30,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291593732] [2024-11-20 15:01:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:30,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291593732] [2024-11-20 15:01:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291593732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190098174] [2024-11-20 15:01:30,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:30,643 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) [2024-11-20 15:01:30,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 15:01:30,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 15:01:30,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:30,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 15:01:30,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:30,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:30,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 15:01:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190098174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:30,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 15:01:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2024-11-20 15:01:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125980214] [2024-11-20 15:01:30,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:30,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 15:01:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 15:01:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-20 15:01:30,872 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:30,935 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2024-11-20 15:01:30,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 15:01:30,935 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-20 15:01:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:30,936 INFO L225 Difference]: With dead ends: 94 [2024-11-20 15:01:30,936 INFO L226 Difference]: Without dead ends: 94 [2024-11-20 15:01:30,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-20 15:01:30,937 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:30,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 205 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:30,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-20 15:01:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-20 15:01:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 93 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-11-20 15:01:30,941 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 20 [2024-11-20 15:01:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:30,941 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-11-20 15:01:30,941 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:30,941 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-11-20 15:01:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-20 15:01:30,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:30,942 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:30,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:31,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:31,143 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:31,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash 150695803, now seen corresponding path program 2 times [2024-11-20 15:01:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849700172] [2024-11-20 15:01:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:31,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:31,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849700172] [2024-11-20 15:01:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849700172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884471103] [2024-11-20 15:01:31,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:31,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:31,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:31,227 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) [2024-11-20 15:01:31,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 15:01:31,275 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 15:01:31,275 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:31,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 15:01:31,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:31,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:31,343 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 15:01:31,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 15:01:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-20 15:01:31,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 15:01:31,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884471103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:31,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 15:01:31,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2024-11-20 15:01:31,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426691879] [2024-11-20 15:01:31,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:31,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:01:31,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:31,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:01:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-20 15:01:31,355 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:31,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:31,404 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-20 15:01:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:01:31,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-20 15:01:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:31,405 INFO L225 Difference]: With dead ends: 86 [2024-11-20 15:01:31,405 INFO L226 Difference]: Without dead ends: 86 [2024-11-20 15:01:31,405 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-20 15:01:31,406 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 114 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:31,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 56 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-20 15:01:31,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-20 15:01:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 85 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2024-11-20 15:01:31,410 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 33 [2024-11-20 15:01:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:31,411 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2024-11-20 15:01:31,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2024-11-20 15:01:31,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-20 15:01:31,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:31,411 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:31,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:31,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:31,612 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:31,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash 150695804, now seen corresponding path program 1 times [2024-11-20 15:01:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:31,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380639067] [2024-11-20 15:01:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:31,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:31,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:31,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380639067] [2024-11-20 15:01:31,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380639067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:31,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357479325] [2024-11-20 15:01:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:31,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:31,697 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) [2024-11-20 15:01:31,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 15:01:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:31,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 15:01:31,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:31,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 15:01:31,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357479325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:31,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:31,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-20 15:01:31,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439249970] [2024-11-20 15:01:31,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:31,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 15:01:31,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 15:01:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 15:01:31,857 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:31,885 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2024-11-20 15:01:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 15:01:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-20 15:01:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:31,886 INFO L225 Difference]: With dead ends: 94 [2024-11-20 15:01:31,886 INFO L226 Difference]: Without dead ends: 94 [2024-11-20 15:01:31,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 15:01:31,887 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 3 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:31,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 362 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:31,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-20 15:01:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-20 15:01:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 82 states have (on average 1.2926829268292683) internal successors, (106), 93 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-11-20 15:01:31,890 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 33 [2024-11-20 15:01:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:31,890 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-11-20 15:01:31,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-11-20 15:01:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 15:01:31,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:31,891 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:31,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 15:01:32,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:32,096 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:32,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:32,096 INFO L85 PathProgramCache]: Analyzing trace with hash -629609034, now seen corresponding path program 2 times [2024-11-20 15:01:32,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:32,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19668144] [2024-11-20 15:01:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:32,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-20 15:01:32,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:32,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19668144] [2024-11-20 15:01:32,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19668144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:32,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:32,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 15:01:32,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573792039] [2024-11-20 15:01:32,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:32,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 15:01:32,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:32,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 15:01:32,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:32,320 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:32,392 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2024-11-20 15:01:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 15:01:32,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-20 15:01:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:32,394 INFO L225 Difference]: With dead ends: 140 [2024-11-20 15:01:32,394 INFO L226 Difference]: Without dead ends: 140 [2024-11-20 15:01:32,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:32,394 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 55 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:32,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 192 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-20 15:01:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2024-11-20 15:01:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 118 states have (on average 1.3728813559322033) internal successors, (162), 129 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-11-20 15:01:32,397 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 41 [2024-11-20 15:01:32,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:32,397 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-11-20 15:01:32,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:32,397 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-11-20 15:01:32,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 15:01:32,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:32,398 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:32,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 15:01:32,398 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:32,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash -560573000, now seen corresponding path program 1 times [2024-11-20 15:01:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:32,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632110784] [2024-11-20 15:01:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:32,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:32,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:32,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632110784] [2024-11-20 15:01:32,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632110784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:32,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:32,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 15:01:32,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630044449] [2024-11-20 15:01:32,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:32,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 15:01:32,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:32,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 15:01:32,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:32,513 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:32,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:32,624 INFO L93 Difference]: Finished difference Result 204 states and 270 transitions. [2024-11-20 15:01:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 15:01:32,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-20 15:01:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:32,626 INFO L225 Difference]: With dead ends: 204 [2024-11-20 15:01:32,626 INFO L226 Difference]: Without dead ends: 204 [2024-11-20 15:01:32,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 15:01:32,626 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 94 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:32,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 296 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:32,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-20 15:01:32,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 153. [2024-11-20 15:01:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 141 states have (on average 1.3687943262411348) internal successors, (193), 152 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:32,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 193 transitions. [2024-11-20 15:01:32,634 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 193 transitions. Word has length 44 [2024-11-20 15:01:32,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:32,634 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 193 transitions. [2024-11-20 15:01:32,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 193 transitions. [2024-11-20 15:01:32,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 15:01:32,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:32,636 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:32,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 15:01:32,636 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:32,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:32,636 INFO L85 PathProgramCache]: Analyzing trace with hash 935128925, now seen corresponding path program 1 times [2024-11-20 15:01:32,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:32,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465450994] [2024-11-20 15:01:32,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:32,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-20 15:01:32,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:32,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465450994] [2024-11-20 15:01:32,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465450994] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:32,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259338525] [2024-11-20 15:01:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:32,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:32,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:32,843 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) [2024-11-20 15:01:32,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 15:01:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:32,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-20 15:01:32,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:32,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:32,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:33,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 15:01:33,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 15:01:33,096 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 15:01:33,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 15:01:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:33,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:33,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259338525] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:33,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:33,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2024-11-20 15:01:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120689398] [2024-11-20 15:01:33,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:33,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 15:01:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 15:01:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-20 15:01:33,619 INFO L87 Difference]: Start difference. First operand 153 states and 193 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:33,899 INFO L93 Difference]: Finished difference Result 343 states and 447 transitions. [2024-11-20 15:01:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 15:01:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-20 15:01:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:33,901 INFO L225 Difference]: With dead ends: 343 [2024-11-20 15:01:33,901 INFO L226 Difference]: Without dead ends: 343 [2024-11-20 15:01:33,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-20 15:01:33,902 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 679 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:33,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 728 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 15:01:33,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-20 15:01:33,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 311. [2024-11-20 15:01:33,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.4233333333333333) internal successors, (427), 310 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 427 transitions. [2024-11-20 15:01:33,908 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 427 transitions. Word has length 48 [2024-11-20 15:01:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:33,909 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 427 transitions. [2024-11-20 15:01:33,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 427 transitions. [2024-11-20 15:01:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 15:01:33,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:33,911 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:33,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 15:01:34,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:34,112 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:34,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1535058889, now seen corresponding path program 1 times [2024-11-20 15:01:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:34,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085889925] [2024-11-20 15:01:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:34,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:34,259 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-20 15:01:34,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085889925] [2024-11-20 15:01:34,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085889925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224197329] [2024-11-20 15:01:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:34,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:34,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:34,261 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) [2024-11-20 15:01:34,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 15:01:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:34,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 15:01:34,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:34,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:34,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 15:01:34,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 15:01:34,431 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 15:01:34,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 15:01:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:34,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:34,589 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 29 treesize of output 25 [2024-11-20 15:01:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:34,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224197329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:34,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:34,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-20 15:01:34,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821545162] [2024-11-20 15:01:34,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:34,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-20 15:01:34,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:34,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 15:01:34,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-20 15:01:34,690 INFO L87 Difference]: Start difference. First operand 311 states and 427 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:34,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:34,934 INFO L93 Difference]: Finished difference Result 841 states and 1236 transitions. [2024-11-20 15:01:34,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 15:01:34,934 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-20 15:01:34,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:34,937 INFO L225 Difference]: With dead ends: 841 [2024-11-20 15:01:34,937 INFO L226 Difference]: Without dead ends: 841 [2024-11-20 15:01:34,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2024-11-20 15:01:34,938 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 600 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:34,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 510 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 15:01:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2024-11-20 15:01:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 369. [2024-11-20 15:01:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 360 states have (on average 1.3805555555555555) internal successors, (497), 368 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:34,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 497 transitions. [2024-11-20 15:01:34,945 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 497 transitions. Word has length 48 [2024-11-20 15:01:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:34,945 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 497 transitions. [2024-11-20 15:01:34,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 16 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:34,945 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 497 transitions. [2024-11-20 15:01:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 15:01:34,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:34,946 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:34,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:35,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:35,147 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:35,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:35,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1075688002, now seen corresponding path program 1 times [2024-11-20 15:01:35,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:35,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277544306] [2024-11-20 15:01:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:35,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:35,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:35,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277544306] [2024-11-20 15:01:35,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277544306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:35,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:35,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 15:01:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200504391] [2024-11-20 15:01:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:35,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 15:01:35,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:35,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 15:01:35,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:35,223 INFO L87 Difference]: Start difference. First operand 369 states and 497 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:35,277 INFO L93 Difference]: Finished difference Result 385 states and 508 transitions. [2024-11-20 15:01:35,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 15:01:35,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-20 15:01:35,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:35,278 INFO L225 Difference]: With dead ends: 385 [2024-11-20 15:01:35,279 INFO L226 Difference]: Without dead ends: 385 [2024-11-20 15:01:35,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 15:01:35,280 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 2 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:35,280 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 279 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-20 15:01:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 381. [2024-11-20 15:01:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 372 states have (on average 1.3548387096774193) internal successors, (504), 380 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 504 transitions. [2024-11-20 15:01:35,286 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 504 transitions. Word has length 49 [2024-11-20 15:01:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:35,286 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 504 transitions. [2024-11-20 15:01:35,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,286 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 504 transitions. [2024-11-20 15:01:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-20 15:01:35,286 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:35,287 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:35,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 15:01:35,287 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:35,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash -924079407, now seen corresponding path program 1 times [2024-11-20 15:01:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:35,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280739073] [2024-11-20 15:01:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:35,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:35,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280739073] [2024-11-20 15:01:35,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280739073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:35,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:35,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 15:01:35,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109546088] [2024-11-20 15:01:35,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:35,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:01:35,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:01:35,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:35,324 INFO L87 Difference]: Start difference. First operand 381 states and 504 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:35,331 INFO L93 Difference]: Finished difference Result 401 states and 524 transitions. [2024-11-20 15:01:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:01:35,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-20 15:01:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:35,332 INFO L225 Difference]: With dead ends: 401 [2024-11-20 15:01:35,332 INFO L226 Difference]: Without dead ends: 401 [2024-11-20 15:01:35,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:35,333 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:35,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:35,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-20 15:01:35,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-20 15:01:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 392 states have (on average 1.336734693877551) internal successors, (524), 400 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 524 transitions. [2024-11-20 15:01:35,338 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 524 transitions. Word has length 53 [2024-11-20 15:01:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:35,339 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 524 transitions. [2024-11-20 15:01:35,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 524 transitions. [2024-11-20 15:01:35,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-20 15:01:35,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:35,340 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:35,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 15:01:35,340 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:35,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1294883028, now seen corresponding path program 1 times [2024-11-20 15:01:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605737567] [2024-11-20 15:01:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:35,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:35,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605737567] [2024-11-20 15:01:35,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605737567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:35,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:35,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 15:01:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544897306] [2024-11-20 15:01:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:35,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 15:01:35,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:35,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 15:01:35,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:35,414 INFO L87 Difference]: Start difference. First operand 401 states and 524 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:35,475 INFO L93 Difference]: Finished difference Result 409 states and 522 transitions. [2024-11-20 15:01:35,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 15:01:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-20 15:01:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:35,476 INFO L225 Difference]: With dead ends: 409 [2024-11-20 15:01:35,476 INFO L226 Difference]: Without dead ends: 409 [2024-11-20 15:01:35,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 15:01:35,477 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:35,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 270 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:35,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-20 15:01:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 399. [2024-11-20 15:01:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 390 states have (on average 1.3256410256410256) internal successors, (517), 398 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 517 transitions. [2024-11-20 15:01:35,483 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 517 transitions. Word has length 55 [2024-11-20 15:01:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:35,483 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 517 transitions. [2024-11-20 15:01:35,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 517 transitions. [2024-11-20 15:01:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-20 15:01:35,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:35,484 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:35,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 15:01:35,484 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:35,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1552311941, now seen corresponding path program 1 times [2024-11-20 15:01:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:35,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385881061] [2024-11-20 15:01:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:35,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:35,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385881061] [2024-11-20 15:01:35,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385881061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:35,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:35,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 15:01:35,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095558625] [2024-11-20 15:01:35,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:35,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 15:01:35,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:35,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 15:01:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:01:35,542 INFO L87 Difference]: Start difference. First operand 399 states and 517 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:35,585 INFO L93 Difference]: Finished difference Result 442 states and 575 transitions. [2024-11-20 15:01:35,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 15:01:35,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-20 15:01:35,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:35,587 INFO L225 Difference]: With dead ends: 442 [2024-11-20 15:01:35,587 INFO L226 Difference]: Without dead ends: 442 [2024-11-20 15:01:35,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:35,588 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 14 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:35,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 220 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-20 15:01:35,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 409. [2024-11-20 15:01:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 400 states have (on average 1.31) internal successors, (524), 408 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 524 transitions. [2024-11-20 15:01:35,593 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 524 transitions. Word has length 58 [2024-11-20 15:01:35,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:35,593 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 524 transitions. [2024-11-20 15:01:35,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 524 transitions. [2024-11-20 15:01:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-20 15:01:35,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:35,594 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:35,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 15:01:35,594 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:35,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash 568191740, now seen corresponding path program 2 times [2024-11-20 15:01:35,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:35,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158041197] [2024-11-20 15:01:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:35,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-20 15:01:35,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158041197] [2024-11-20 15:01:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158041197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:35,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155406972] [2024-11-20 15:01:35,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:35,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:35,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:35,889 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) [2024-11-20 15:01:35,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 15:01:35,969 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 15:01:35,969 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:35,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-20 15:01:35,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-20 15:01:36,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 15:01:36,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155406972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:36,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 15:01:36,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2024-11-20 15:01:36,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976760858] [2024-11-20 15:01:36,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:36,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 15:01:36,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:36,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 15:01:36,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-11-20 15:01:36,136 INFO L87 Difference]: Start difference. First operand 409 states and 524 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:36,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:36,327 INFO L93 Difference]: Finished difference Result 428 states and 546 transitions. [2024-11-20 15:01:36,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 15:01:36,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-20 15:01:36,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:36,329 INFO L225 Difference]: With dead ends: 428 [2024-11-20 15:01:36,329 INFO L226 Difference]: Without dead ends: 428 [2024-11-20 15:01:36,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-20 15:01:36,329 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 57 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:36,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-20 15:01:36,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 408. [2024-11-20 15:01:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 399 states have (on average 1.3082706766917294) internal successors, (522), 407 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 522 transitions. [2024-11-20 15:01:36,335 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 522 transitions. Word has length 60 [2024-11-20 15:01:36,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:36,335 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 522 transitions. [2024-11-20 15:01:36,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 522 transitions. [2024-11-20 15:01:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-20 15:01:36,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:36,336 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:36,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 15:01:36,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-20 15:01:36,540 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:36,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:36,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1018128091, now seen corresponding path program 1 times [2024-11-20 15:01:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:36,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432899476] [2024-11-20 15:01:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-20 15:01:36,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:36,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432899476] [2024-11-20 15:01:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432899476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:36,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 15:01:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963418886] [2024-11-20 15:01:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:36,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 15:01:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 15:01:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:36,708 INFO L87 Difference]: Start difference. First operand 408 states and 522 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:36,746 INFO L93 Difference]: Finished difference Result 407 states and 521 transitions. [2024-11-20 15:01:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 15:01:36,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-20 15:01:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:36,747 INFO L225 Difference]: With dead ends: 407 [2024-11-20 15:01:36,747 INFO L226 Difference]: Without dead ends: 404 [2024-11-20 15:01:36,748 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:36,748 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 37 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:36,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 158 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-20 15:01:36,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2024-11-20 15:01:36,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 384 states have (on average 1.28125) internal successors, (492), 391 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 492 transitions. [2024-11-20 15:01:36,754 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 492 transitions. Word has length 61 [2024-11-20 15:01:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:36,755 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 492 transitions. [2024-11-20 15:01:36,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:36,755 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 492 transitions. [2024-11-20 15:01:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 15:01:36,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:36,755 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 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] [2024-11-20 15:01:36,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 15:01:36,756 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:36,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash 44185747, now seen corresponding path program 1 times [2024-11-20 15:01:36,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:36,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518922356] [2024-11-20 15:01:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:36,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:36,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518922356] [2024-11-20 15:01:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518922356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:36,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144479011] [2024-11-20 15:01:36,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:36,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:36,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:36,830 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:36,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 15:01:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:36,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 15:01:36,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:36,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144479011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:36,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:36,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-20 15:01:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606600158] [2024-11-20 15:01:36,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:36,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 15:01:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 15:01:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 15:01:36,955 INFO L87 Difference]: Start difference. First operand 392 states and 492 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:37,026 INFO L93 Difference]: Finished difference Result 394 states and 478 transitions. [2024-11-20 15:01:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 15:01:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-20 15:01:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:37,028 INFO L225 Difference]: With dead ends: 394 [2024-11-20 15:01:37,028 INFO L226 Difference]: Without dead ends: 394 [2024-11-20 15:01:37,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-20 15:01:37,028 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 95 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:37,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 312 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:37,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-20 15:01:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 380. [2024-11-20 15:01:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 372 states have (on average 1.2688172043010753) internal successors, (472), 379 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 472 transitions. [2024-11-20 15:01:37,033 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 472 transitions. Word has length 62 [2024-11-20 15:01:37,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:37,034 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 472 transitions. [2024-11-20 15:01:37,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 472 transitions. [2024-11-20 15:01:37,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-20 15:01:37,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:37,035 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:37,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 15:01:37,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:37,235 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:37,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:37,236 INFO L85 PathProgramCache]: Analyzing trace with hash -779132351, now seen corresponding path program 1 times [2024-11-20 15:01:37,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:37,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733511747] [2024-11-20 15:01:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:37,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-20 15:01:37,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733511747] [2024-11-20 15:01:37,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733511747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:37,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078476905] [2024-11-20 15:01:37,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:37,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:37,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:37,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:37,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 15:01:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:37,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 15:01:37,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:37,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-20 15:01:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-20 15:01:37,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 15:01:37,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078476905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:37,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 15:01:37,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2024-11-20 15:01:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692236828] [2024-11-20 15:01:37,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:37,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 15:01:37,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 15:01:37,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-20 15:01:37,682 INFO L87 Difference]: Start difference. First operand 380 states and 472 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:37,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:37,828 INFO L93 Difference]: Finished difference Result 376 states and 461 transitions. [2024-11-20 15:01:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 15:01:37,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-20 15:01:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:37,830 INFO L225 Difference]: With dead ends: 376 [2024-11-20 15:01:37,830 INFO L226 Difference]: Without dead ends: 376 [2024-11-20 15:01:37,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2024-11-20 15:01:37,831 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 54 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:37,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 434 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-20 15:01:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 358. [2024-11-20 15:01:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 350 states have (on average 1.262857142857143) internal successors, (442), 357 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 442 transitions. [2024-11-20 15:01:37,837 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 442 transitions. Word has length 62 [2024-11-20 15:01:37,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:37,837 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 442 transitions. [2024-11-20 15:01:37,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:37,837 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 442 transitions. [2024-11-20 15:01:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-20 15:01:37,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:37,838 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:37,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:38,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-20 15:01:38,038 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:38,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:38,039 INFO L85 PathProgramCache]: Analyzing trace with hash -937242689, now seen corresponding path program 1 times [2024-11-20 15:01:38,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:38,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319781188] [2024-11-20 15:01:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:38,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:38,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:38,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319781188] [2024-11-20 15:01:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319781188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:38,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:38,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 15:01:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417592259] [2024-11-20 15:01:38,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:38,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 15:01:38,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:38,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 15:01:38,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:38,082 INFO L87 Difference]: Start difference. First operand 358 states and 442 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:38,096 INFO L93 Difference]: Finished difference Result 357 states and 437 transitions. [2024-11-20 15:01:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 15:01:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-20 15:01:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:38,097 INFO L225 Difference]: With dead ends: 357 [2024-11-20 15:01:38,097 INFO L226 Difference]: Without dead ends: 357 [2024-11-20 15:01:38,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 15:01:38,098 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 31 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:38,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 61 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:38,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-20 15:01:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-20 15:01:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 350 states have (on average 1.2485714285714287) internal successors, (437), 356 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 437 transitions. [2024-11-20 15:01:38,102 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 437 transitions. Word has length 64 [2024-11-20 15:01:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:38,102 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 437 transitions. [2024-11-20 15:01:38,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,103 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 437 transitions. [2024-11-20 15:01:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-20 15:01:38,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:38,103 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:38,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-20 15:01:38,103 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:38,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash -937242688, now seen corresponding path program 1 times [2024-11-20 15:01:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021199798] [2024-11-20 15:01:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:38,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:38,168 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:38,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:38,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021199798] [2024-11-20 15:01:38,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021199798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:38,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:38,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 15:01:38,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326872267] [2024-11-20 15:01:38,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:38,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 15:01:38,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:38,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 15:01:38,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:38,169 INFO L87 Difference]: Start difference. First operand 357 states and 437 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:38,255 INFO L93 Difference]: Finished difference Result 601 states and 749 transitions. [2024-11-20 15:01:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 15:01:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-20 15:01:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:38,257 INFO L225 Difference]: With dead ends: 601 [2024-11-20 15:01:38,257 INFO L226 Difference]: Without dead ends: 568 [2024-11-20 15:01:38,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 15:01:38,258 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 83 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:38,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 316 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-20 15:01:38,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 426. [2024-11-20 15:01:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 419 states have (on average 1.269689737470167) internal successors, (532), 425 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 532 transitions. [2024-11-20 15:01:38,263 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 532 transitions. Word has length 64 [2024-11-20 15:01:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:38,264 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 532 transitions. [2024-11-20 15:01:38,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,264 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 532 transitions. [2024-11-20 15:01:38,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-20 15:01:38,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:38,264 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:38,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 15:01:38,264 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:38,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:38,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1948359938, now seen corresponding path program 1 times [2024-11-20 15:01:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:38,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843021913] [2024-11-20 15:01:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:38,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:38,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:38,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843021913] [2024-11-20 15:01:38,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843021913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:38,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:38,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 15:01:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924546149] [2024-11-20 15:01:38,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:38,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 15:01:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 15:01:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:01:38,326 INFO L87 Difference]: Start difference. First operand 426 states and 532 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:38,369 INFO L93 Difference]: Finished difference Result 404 states and 502 transitions. [2024-11-20 15:01:38,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 15:01:38,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-20 15:01:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:38,371 INFO L225 Difference]: With dead ends: 404 [2024-11-20 15:01:38,371 INFO L226 Difference]: Without dead ends: 388 [2024-11-20 15:01:38,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:38,371 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 160 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 [2024-11-20 15:01:38,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 160 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-20 15:01:38,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-11-20 15:01:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 381 states have (on average 1.2755905511811023) internal successors, (486), 387 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 486 transitions. [2024-11-20 15:01:38,377 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 486 transitions. Word has length 64 [2024-11-20 15:01:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:38,377 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 486 transitions. [2024-11-20 15:01:38,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 486 transitions. [2024-11-20 15:01:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-20 15:01:38,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:38,378 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:38,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 15:01:38,378 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:38,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:38,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1384325621, now seen corresponding path program 1 times [2024-11-20 15:01:38,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:38,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794768493] [2024-11-20 15:01:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:38,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-20 15:01:38,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794768493] [2024-11-20 15:01:38,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794768493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:38,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098675777] [2024-11-20 15:01:38,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:38,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:38,601 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:38,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 15:01:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:38,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 15:01:38,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:38,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-20 15:01:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-20 15:01:38,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:38,946 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-20 15:01:38,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2024-11-20 15:01:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-20 15:01:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098675777] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:39,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:39,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2024-11-20 15:01:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699339203] [2024-11-20 15:01:39,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:39,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 15:01:39,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 15:01:39,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2024-11-20 15:01:39,007 INFO L87 Difference]: Start difference. First operand 388 states and 486 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:40,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:40,224 INFO L93 Difference]: Finished difference Result 1223 states and 1608 transitions. [2024-11-20 15:01:40,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 15:01:40,224 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-20 15:01:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:40,227 INFO L225 Difference]: With dead ends: 1223 [2024-11-20 15:01:40,227 INFO L226 Difference]: Without dead ends: 1223 [2024-11-20 15:01:40,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2024-11-20 15:01:40,228 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 518 mSDsluCounter, 3960 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:40,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 4211 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 15:01:40,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-20 15:01:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 466. [2024-11-20 15:01:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 459 states have (on average 1.2701525054466232) internal successors, (583), 465 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 583 transitions. [2024-11-20 15:01:40,235 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 583 transitions. Word has length 67 [2024-11-20 15:01:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:40,235 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 583 transitions. [2024-11-20 15:01:40,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:40,235 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 583 transitions. [2024-11-20 15:01:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-20 15:01:40,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:40,236 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:40,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:40,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-20 15:01:40,436 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:40,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:40,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1630169780, now seen corresponding path program 2 times [2024-11-20 15:01:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:40,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432408926] [2024-11-20 15:01:40,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:40,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-20 15:01:40,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:40,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432408926] [2024-11-20 15:01:40,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432408926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:40,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554610405] [2024-11-20 15:01:40,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:40,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:40,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:40,563 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:40,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 15:01:40,631 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 15:01:40,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:40,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 15:01:40,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-20 15:01:40,743 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 15:01:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554610405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:40,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 15:01:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-11-20 15:01:40,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133435426] [2024-11-20 15:01:40,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:40,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 15:01:40,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 15:01:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-20 15:01:40,745 INFO L87 Difference]: Start difference. First operand 466 states and 583 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:40,899 INFO L93 Difference]: Finished difference Result 633 states and 775 transitions. [2024-11-20 15:01:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 15:01:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-20 15:01:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:40,901 INFO L225 Difference]: With dead ends: 633 [2024-11-20 15:01:40,901 INFO L226 Difference]: Without dead ends: 624 [2024-11-20 15:01:40,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2024-11-20 15:01:40,902 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 223 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:40,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 223 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:40,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-20 15:01:40,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 520. [2024-11-20 15:01:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 513 states have (on average 1.253411306042885) internal successors, (643), 519 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 643 transitions. [2024-11-20 15:01:40,909 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 643 transitions. Word has length 69 [2024-11-20 15:01:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:40,909 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 643 transitions. [2024-11-20 15:01:40,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 643 transitions. [2024-11-20 15:01:40,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-20 15:01:40,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:40,910 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:40,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:41,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-20 15:01:41,115 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:41,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash -391285385, now seen corresponding path program 1 times [2024-11-20 15:01:41,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:41,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508198599] [2024-11-20 15:01:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:41,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508198599] [2024-11-20 15:01:41,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508198599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:41,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987206242] [2024-11-20 15:01:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:41,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:41,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:41,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:41,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 15:01:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:41,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 15:01:41,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:41,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:41,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 15:01:41,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987206242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:41,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 15:01:41,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-20 15:01:41,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738876334] [2024-11-20 15:01:41,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:41,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 15:01:41,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:41,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 15:01:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-20 15:01:41,597 INFO L87 Difference]: Start difference. First operand 520 states and 643 transitions. Second operand has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:41,729 INFO L93 Difference]: Finished difference Result 614 states and 747 transitions. [2024-11-20 15:01:41,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 15:01:41,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-20 15:01:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:41,730 INFO L225 Difference]: With dead ends: 614 [2024-11-20 15:01:41,731 INFO L226 Difference]: Without dead ends: 614 [2024-11-20 15:01:41,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-20 15:01:41,731 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 75 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:41,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 316 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-20 15:01:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 550. [2024-11-20 15:01:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 543 states have (on average 1.2430939226519337) internal successors, (675), 549 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 675 transitions. [2024-11-20 15:01:41,741 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 675 transitions. Word has length 71 [2024-11-20 15:01:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:41,741 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 675 transitions. [2024-11-20 15:01:41,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 675 transitions. [2024-11-20 15:01:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-20 15:01:41,742 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:41,742 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:41,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:41,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-20 15:01:41,946 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:41,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash 754653992, now seen corresponding path program 1 times [2024-11-20 15:01:41,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:41,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119087198] [2024-11-20 15:01:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:42,045 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-20 15:01:42,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:42,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119087198] [2024-11-20 15:01:42,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119087198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:42,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:42,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 15:01:42,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134185570] [2024-11-20 15:01:42,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:42,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 15:01:42,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:42,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 15:01:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 15:01:42,047 INFO L87 Difference]: Start difference. First operand 550 states and 675 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:42,112 INFO L93 Difference]: Finished difference Result 553 states and 671 transitions. [2024-11-20 15:01:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 15:01:42,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-20 15:01:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:42,114 INFO L225 Difference]: With dead ends: 553 [2024-11-20 15:01:42,114 INFO L226 Difference]: Without dead ends: 553 [2024-11-20 15:01:42,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-11-20 15:01:42,114 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:42,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 246 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:42,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-20 15:01:42,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 546. [2024-11-20 15:01:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 540 states have (on average 1.2314814814814814) internal successors, (665), 545 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:42,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 665 transitions. [2024-11-20 15:01:42,119 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 665 transitions. Word has length 72 [2024-11-20 15:01:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:42,120 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 665 transitions. [2024-11-20 15:01:42,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 665 transitions. [2024-11-20 15:01:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-20 15:01:42,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:42,120 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:42,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-20 15:01:42,121 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:42,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:42,121 INFO L85 PathProgramCache]: Analyzing trace with hash 214271563, now seen corresponding path program 1 times [2024-11-20 15:01:42,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:42,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106726938] [2024-11-20 15:01:42,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:42,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-20 15:01:42,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:42,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106726938] [2024-11-20 15:01:42,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106726938] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:42,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274697381] [2024-11-20 15:01:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:42,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:42,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:42,368 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:42,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 15:01:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:42,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 15:01:42,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:42,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-20 15:01:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-20 15:01:42,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:42,763 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-20 15:01:42,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2024-11-20 15:01:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-20 15:01:42,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274697381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:42,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:42,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-11-20 15:01:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141701313] [2024-11-20 15:01:42,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:42,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 15:01:42,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:42,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 15:01:42,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2024-11-20 15:01:42,819 INFO L87 Difference]: Start difference. First operand 546 states and 665 transitions. Second operand has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:44,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:44,028 INFO L93 Difference]: Finished difference Result 1257 states and 1582 transitions. [2024-11-20 15:01:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-20 15:01:44,028 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-20 15:01:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:44,031 INFO L225 Difference]: With dead ends: 1257 [2024-11-20 15:01:44,031 INFO L226 Difference]: Without dead ends: 1250 [2024-11-20 15:01:44,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2024-11-20 15:01:44,032 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 534 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 4928 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:44,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 4928 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 15:01:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-11-20 15:01:44,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 547. [2024-11-20 15:01:44,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 541 states have (on average 1.2310536044362292) internal successors, (666), 546 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:44,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 666 transitions. [2024-11-20 15:01:44,039 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 666 transitions. Word has length 73 [2024-11-20 15:01:44,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:44,039 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 666 transitions. [2024-11-20 15:01:44,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.7777777777777777) internal successors, (102), 27 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:44,040 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 666 transitions. [2024-11-20 15:01:44,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-20 15:01:44,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:44,040 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:44,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:44,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:44,245 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:44,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:44,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1990946019, now seen corresponding path program 2 times [2024-11-20 15:01:44,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095932813] [2024-11-20 15:01:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 15 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-20 15:01:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095932813] [2024-11-20 15:01:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095932813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081030280] [2024-11-20 15:01:44,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:44,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:44,493 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:44,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 15:01:44,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 15:01:44,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:44,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-20 15:01:44,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:44,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:44,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:44,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 15:01:44,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 15:01:44,742 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 15:01:44,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 15:01:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:44,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081030280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:45,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-11-20 15:01:45,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099108125] [2024-11-20 15:01:45,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:45,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 15:01:45,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 15:01:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-20 15:01:45,444 INFO L87 Difference]: Start difference. First operand 547 states and 666 transitions. Second operand has 26 states, 25 states have (on average 5.48) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:45,842 INFO L93 Difference]: Finished difference Result 1197 states and 1478 transitions. [2024-11-20 15:01:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 15:01:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.48) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-20 15:01:45,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:45,845 INFO L225 Difference]: With dead ends: 1197 [2024-11-20 15:01:45,845 INFO L226 Difference]: Without dead ends: 1197 [2024-11-20 15:01:45,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2024-11-20 15:01:45,846 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 768 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:45,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1694 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 15:01:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-20 15:01:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1191. [2024-11-20 15:01:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 1185 states have (on average 1.2472573839662446) internal successors, (1478), 1190 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1478 transitions. [2024-11-20 15:01:45,856 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1478 transitions. Word has length 76 [2024-11-20 15:01:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:45,857 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 1478 transitions. [2024-11-20 15:01:45,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.48) internal successors, (137), 26 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1478 transitions. [2024-11-20 15:01:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-20 15:01:45,858 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:45,858 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:45,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-20 15:01:46,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:46,058 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:46,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash 98625707, now seen corresponding path program 1 times [2024-11-20 15:01:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:46,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118825177] [2024-11-20 15:01:46,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:46,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-20 15:01:46,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:46,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118825177] [2024-11-20 15:01:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118825177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:46,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 15:01:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077787913] [2024-11-20 15:01:46,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:46,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 15:01:46,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 15:01:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:46,124 INFO L87 Difference]: Start difference. First operand 1191 states and 1478 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:46,160 INFO L93 Difference]: Finished difference Result 818 states and 978 transitions. [2024-11-20 15:01:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 15:01:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-20 15:01:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:46,162 INFO L225 Difference]: With dead ends: 818 [2024-11-20 15:01:46,162 INFO L226 Difference]: Without dead ends: 590 [2024-11-20 15:01:46,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 15:01:46,163 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 36 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:46,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-20 15:01:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 176. [2024-11-20 15:01:46,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 173 states have (on average 1.1560693641618498) internal successors, (200), 175 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 200 transitions. [2024-11-20 15:01:46,167 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 200 transitions. Word has length 80 [2024-11-20 15:01:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:46,167 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 200 transitions. [2024-11-20 15:01:46,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 200 transitions. [2024-11-20 15:01:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-20 15:01:46,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:46,167 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:46,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-20 15:01:46,168 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:46,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 492345470, now seen corresponding path program 2 times [2024-11-20 15:01:46,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:46,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916802131] [2024-11-20 15:01:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:46,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 15 proven. 66 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:46,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:46,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916802131] [2024-11-20 15:01:46,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916802131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:46,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644134737] [2024-11-20 15:01:46,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:46,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:46,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:46,439 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:46,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 15:01:46,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 15:01:46,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:46,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 15:01:46,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-20 15:01:46,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:46,937 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-20 15:01:46,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2024-11-20 15:01:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-20 15:01:47,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644134737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:47,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:47,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 33 [2024-11-20 15:01:47,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821723152] [2024-11-20 15:01:47,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:47,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-20 15:01:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-20 15:01:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2024-11-20 15:01:47,013 INFO L87 Difference]: Start difference. First operand 176 states and 200 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:47,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:47,931 INFO L93 Difference]: Finished difference Result 434 states and 514 transitions. [2024-11-20 15:01:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 15:01:47,931 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-20 15:01:47,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:47,932 INFO L225 Difference]: With dead ends: 434 [2024-11-20 15:01:47,932 INFO L226 Difference]: Without dead ends: 434 [2024-11-20 15:01:47,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2024-11-20 15:01:47,933 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 498 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 4088 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:47,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 4088 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 15:01:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-20 15:01:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 200. [2024-11-20 15:01:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 197 states have (on average 1.16751269035533) internal successors, (230), 199 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:47,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 230 transitions. [2024-11-20 15:01:47,936 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 230 transitions. Word has length 82 [2024-11-20 15:01:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:47,936 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 230 transitions. [2024-11-20 15:01:47,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 230 transitions. [2024-11-20 15:01:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-20 15:01:47,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:47,937 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:47,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-20 15:01:48,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:48,140 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:48,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1383026470, now seen corresponding path program 1 times [2024-11-20 15:01:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:48,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961847686] [2024-11-20 15:01:48,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:48,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-20 15:01:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:48,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961847686] [2024-11-20 15:01:48,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961847686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:48,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:48,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 15:01:48,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521994894] [2024-11-20 15:01:48,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:48,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 15:01:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:48,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 15:01:48,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:01:48,187 INFO L87 Difference]: Start difference. First operand 200 states and 230 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:48,196 INFO L93 Difference]: Finished difference Result 202 states and 232 transitions. [2024-11-20 15:01:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 15:01:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-20 15:01:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:48,197 INFO L225 Difference]: With dead ends: 202 [2024-11-20 15:01:48,197 INFO L226 Difference]: Without dead ends: 202 [2024-11-20 15:01:48,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 15:01:48,198 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:48,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 155 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-20 15:01:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-20 15:01:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 199 states have (on average 1.1658291457286432) internal successors, (232), 201 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2024-11-20 15:01:48,200 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 82 [2024-11-20 15:01:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:48,200 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2024-11-20 15:01:48,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2024-11-20 15:01:48,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-20 15:01:48,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:48,201 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:48,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-20 15:01:48,201 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:48,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:48,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1994561461, now seen corresponding path program 1 times [2024-11-20 15:01:48,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:48,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960214245] [2024-11-20 15:01:48,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:48,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-20 15:01:48,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:48,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960214245] [2024-11-20 15:01:48,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960214245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:48,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 15:01:48,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 15:01:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565268704] [2024-11-20 15:01:48,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:48,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 15:01:48,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 15:01:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 15:01:48,267 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:48,290 INFO L93 Difference]: Finished difference Result 207 states and 236 transitions. [2024-11-20 15:01:48,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 15:01:48,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-20 15:01:48,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:48,291 INFO L225 Difference]: With dead ends: 207 [2024-11-20 15:01:48,291 INFO L226 Difference]: Without dead ends: 207 [2024-11-20 15:01:48,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-20 15:01:48,291 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:48,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 164 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-20 15:01:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2024-11-20 15:01:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 198 states have (on average 1.1616161616161615) internal successors, (230), 200 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2024-11-20 15:01:48,293 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 84 [2024-11-20 15:01:48,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:48,294 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2024-11-20 15:01:48,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,294 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2024-11-20 15:01:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-20 15:01:48,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:48,294 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:48,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-20 15:01:48,295 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:48,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash -24694026, now seen corresponding path program 1 times [2024-11-20 15:01:48,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:48,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317963561] [2024-11-20 15:01:48,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:48,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:48,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317963561] [2024-11-20 15:01:48,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317963561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:48,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263832399] [2024-11-20 15:01:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:48,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:48,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:48,414 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:48,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 15:01:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:48,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 15:01:48,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:48,664 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:48,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263832399] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:48,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-11-20 15:01:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201753520] [2024-11-20 15:01:48,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:48,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-20 15:01:48,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:48,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 15:01:48,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-20 15:01:48,757 INFO L87 Difference]: Start difference. First operand 201 states and 230 transitions. Second operand has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:48,951 INFO L93 Difference]: Finished difference Result 351 states and 406 transitions. [2024-11-20 15:01:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 15:01:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-20 15:01:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:48,952 INFO L225 Difference]: With dead ends: 351 [2024-11-20 15:01:48,952 INFO L226 Difference]: Without dead ends: 258 [2024-11-20 15:01:48,952 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2024-11-20 15:01:48,952 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 170 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:48,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 533 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-20 15:01:48,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2024-11-20 15:01:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 245 states have (on average 1.1510204081632653) internal successors, (282), 247 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 282 transitions. [2024-11-20 15:01:48,955 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 282 transitions. Word has length 86 [2024-11-20 15:01:48,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:48,955 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 282 transitions. [2024-11-20 15:01:48,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 282 transitions. [2024-11-20 15:01:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-20 15:01:48,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:48,956 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:48,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:49,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:49,157 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:49,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1750313336, now seen corresponding path program 1 times [2024-11-20 15:01:49,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:49,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917298650] [2024-11-20 15:01:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:49,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:49,377 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:49,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:49,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917298650] [2024-11-20 15:01:49,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917298650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:49,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434017778] [2024-11-20 15:01:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:49,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:49,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:49,380 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:49,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 15:01:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:49,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 15:01:49,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:49,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:49,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434017778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:50,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:50,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-20 15:01:50,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063508625] [2024-11-20 15:01:50,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:50,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 15:01:50,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:50,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 15:01:50,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-20 15:01:50,233 INFO L87 Difference]: Start difference. First operand 248 states and 282 transitions. Second operand has 26 states, 25 states have (on average 6.24) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:50,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:50,429 INFO L93 Difference]: Finished difference Result 254 states and 287 transitions. [2024-11-20 15:01:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 15:01:50,430 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.24) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-20 15:01:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:50,431 INFO L225 Difference]: With dead ends: 254 [2024-11-20 15:01:50,431 INFO L226 Difference]: Without dead ends: 229 [2024-11-20 15:01:50,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2024-11-20 15:01:50,431 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 97 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:50,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 458 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-20 15:01:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2024-11-20 15:01:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 224 states have (on average 1.15625) internal successors, (259), 226 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2024-11-20 15:01:50,433 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 86 [2024-11-20 15:01:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:50,434 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2024-11-20 15:01:50,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.24) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2024-11-20 15:01:50,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-20 15:01:50,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:50,434 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:50,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:50,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:50,635 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:50,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:50,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1166788564, now seen corresponding path program 2 times [2024-11-20 15:01:50,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:50,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267071602] [2024-11-20 15:01:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:50,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 91 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:50,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:50,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267071602] [2024-11-20 15:01:50,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267071602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:50,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410815039] [2024-11-20 15:01:50,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:50,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:50,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:50,944 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:50,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 15:01:51,048 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 15:01:51,048 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:51,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 15:01:51,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:51,325 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-20 15:01:51,325 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:51,460 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-20 15:01:51,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 14 [2024-11-20 15:01:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-20 15:01:51,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410815039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:51,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:51,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 34 [2024-11-20 15:01:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196621374] [2024-11-20 15:01:51,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:51,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-20 15:01:51,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-20 15:01:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2024-11-20 15:01:51,547 INFO L87 Difference]: Start difference. First operand 227 states and 259 transitions. Second operand has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:52,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:52,565 INFO L93 Difference]: Finished difference Result 390 states and 448 transitions. [2024-11-20 15:01:52,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 15:01:52,566 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2024-11-20 15:01:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:52,569 INFO L225 Difference]: With dead ends: 390 [2024-11-20 15:01:52,569 INFO L226 Difference]: Without dead ends: 372 [2024-11-20 15:01:52,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2024-11-20 15:01:52,570 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 250 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 4757 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:52,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 4757 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 15:01:52,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-20 15:01:52,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 191. [2024-11-20 15:01:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 188 states have (on average 1.1542553191489362) internal successors, (217), 190 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:52,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 217 transitions. [2024-11-20 15:01:52,572 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 217 transitions. Word has length 88 [2024-11-20 15:01:52,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:52,573 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 217 transitions. [2024-11-20 15:01:52,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.117647058823529) internal successors, (140), 34 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:52,573 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 217 transitions. [2024-11-20 15:01:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-20 15:01:52,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:52,574 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:52,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-20 15:01:52,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:52,778 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:52,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:52,778 INFO L85 PathProgramCache]: Analyzing trace with hash -733072209, now seen corresponding path program 2 times [2024-11-20 15:01:52,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:52,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468880530] [2024-11-20 15:01:52,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:52,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468880530] [2024-11-20 15:01:52,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468880530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:52,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41183473] [2024-11-20 15:01:52,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 15:01:52,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:52,975 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:52,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-20 15:01:53,072 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 15:01:53,073 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:53,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 15:01:53,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:53,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-20 15:01:53,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 15:01:53,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41183473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 15:01:53,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 15:01:53,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-20 15:01:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764196157] [2024-11-20 15:01:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 15:01:53,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 15:01:53,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 15:01:53,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 15:01:53,236 INFO L87 Difference]: Start difference. First operand 191 states and 217 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:53,271 INFO L93 Difference]: Finished difference Result 190 states and 216 transitions. [2024-11-20 15:01:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 15:01:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-20 15:01:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:53,272 INFO L225 Difference]: With dead ends: 190 [2024-11-20 15:01:53,272 INFO L226 Difference]: Without dead ends: 163 [2024-11-20 15:01:53,272 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 15:01:53,272 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:53,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 99 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 15:01:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-20 15:01:53,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2024-11-20 15:01:53,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.1111111111111112) internal successors, (170), 154 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2024-11-20 15:01:53,274 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 93 [2024-11-20 15:01:53,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:53,274 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2024-11-20 15:01:53,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2024-11-20 15:01:53,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-20 15:01:53,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:53,274 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:53,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-20 15:01:53,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-20 15:01:53,479 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:53,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash -585360551, now seen corresponding path program 3 times [2024-11-20 15:01:53,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:53,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96467782] [2024-11-20 15:01:53,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:53,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 15 proven. 120 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-20 15:01:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96467782] [2024-11-20 15:01:53,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96467782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:53,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808328869] [2024-11-20 15:01:53,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 15:01:53,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:53,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:53,787 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:53,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-20 15:01:53,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-20 15:01:53,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:53,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 15:01:53,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:53,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:53,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:53,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 15:01:54,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 15:01:54,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 15:01:54,018 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 15:01:54,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 15:01:54,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 15:01:54,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-20 15:01:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-20 15:01:54,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:54,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-20 15:01:54,572 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 15 [2024-11-20 15:01:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-20 15:01:54,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808328869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:54,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:54,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2024-11-20 15:01:54,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696132985] [2024-11-20 15:01:54,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:54,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 15:01:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 15:01:54,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2024-11-20 15:01:54,808 INFO L87 Difference]: Start difference. First operand 155 states and 170 transitions. Second operand has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:55,334 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2024-11-20 15:01:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-20 15:01:55,334 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-20 15:01:55,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:55,335 INFO L225 Difference]: With dead ends: 174 [2024-11-20 15:01:55,335 INFO L226 Difference]: Without dead ends: 174 [2024-11-20 15:01:55,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1799, Unknown=0, NotChecked=0, Total=2256 [2024-11-20 15:01:55,336 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 392 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:55,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 519 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 15:01:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-20 15:01:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 165. [2024-11-20 15:01:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 163 states have (on average 1.1104294478527608) internal successors, (181), 164 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:55,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2024-11-20 15:01:55,338 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 97 [2024-11-20 15:01:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:55,338 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2024-11-20 15:01:55,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.153846153846154) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2024-11-20 15:01:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 15:01:55,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:55,339 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:55,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-20 15:01:55,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-20 15:01:55,539 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:55,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash 797369199, now seen corresponding path program 3 times [2024-11-20 15:01:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:55,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563795699] [2024-11-20 15:01:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:55,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 9 proven. 144 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-20 15:01:55,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563795699] [2024-11-20 15:01:55,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563795699] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:55,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111271621] [2024-11-20 15:01:55,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 15:01:55,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:55,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:55,958 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:55,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-20 15:01:56,063 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 15:01:56,063 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:56,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 15:01:56,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:56,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:56,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:56,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 15:01:56,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 15:01:56,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 15:01:56,225 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 15:01:56,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 15:01:56,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 15:01:56,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-20 15:01:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-20 15:01:56,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:01:56,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-20 15:01:56,726 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 15 [2024-11-20 15:01:56,958 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-20 15:01:56,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111271621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:01:56,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:01:56,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 27 [2024-11-20 15:01:56,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639362728] [2024-11-20 15:01:56,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:01:56,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 15:01:56,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:01:56,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 15:01:56,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2024-11-20 15:01:56,960 INFO L87 Difference]: Start difference. First operand 165 states and 181 transitions. Second operand has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:01:58,604 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-11-20 15:01:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-20 15:01:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-20 15:01:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:01:58,605 INFO L225 Difference]: With dead ends: 214 [2024-11-20 15:01:58,605 INFO L226 Difference]: Without dead ends: 105 [2024-11-20 15:01:58,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=691, Invalid=5789, Unknown=0, NotChecked=0, Total=6480 [2024-11-20 15:01:58,606 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 252 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 15:01:58,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 824 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 15:01:58,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-20 15:01:58,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-20 15:01:58,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:58,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-11-20 15:01:58,608 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 103 [2024-11-20 15:01:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:01:58,608 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-11-20 15:01:58,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:01:58,608 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-11-20 15:01:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-20 15:01:58,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 15:01:58,609 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 15:01:58,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-20 15:01:58,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-20 15:01:58,809 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2024-11-20 15:01:58,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 15:01:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash -53143843, now seen corresponding path program 3 times [2024-11-20 15:01:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 15:01:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201819696] [2024-11-20 15:01:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 15:01:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 15:01:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 15:01:59,161 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-20 15:01:59,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 15:01:59,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201819696] [2024-11-20 15:01:59,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201819696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 15:01:59,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290036472] [2024-11-20 15:01:59,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 15:01:59,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:01:59,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 15:01:59,164 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 15:01:59,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-20 15:01:59,267 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 15:01:59,268 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 15:01:59,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 15:01:59,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 15:01:59,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 15:01:59,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 15:01:59,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-20 15:01:59,438 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 15:01:59,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 15:01:59,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 14 [2024-11-20 15:01:59,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 15:01:59,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2024-11-20 15:01:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 32 proven. 26 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-20 15:01:59,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 15:02:00,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-20 15:02:00,261 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 35 treesize of output 26 [2024-11-20 15:02:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-20 15:02:00,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290036472] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 15:02:00,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 15:02:00,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 29 [2024-11-20 15:02:00,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531479403] [2024-11-20 15:02:00,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 15:02:00,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-20 15:02:00,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 15:02:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-20 15:02:00,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2024-11-20 15:02:00,554 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 29 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 15:02:01,677 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2024-11-20 15:02:01,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-20 15:02:01,677 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 29 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-20 15:02:01,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 15:02:01,677 INFO L225 Difference]: With dead ends: 102 [2024-11-20 15:02:01,677 INFO L226 Difference]: Without dead ends: 0 [2024-11-20 15:02:01,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=458, Invalid=2848, Unknown=0, NotChecked=0, Total=3306 [2024-11-20 15:02:01,678 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 195 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 15:02:01,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 489 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 15:02:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-20 15:02:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-20 15:02:01,679 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) [2024-11-20 15:02:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-20 15:02:01,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2024-11-20 15:02:01,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 15:02:01,679 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 15:02:01,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.344827586206897) internal successors, (126), 29 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 15:02:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-20 15:02:01,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-20 15:02:01,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 24 remaining) [2024-11-20 15:02:01,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2024-11-20 15:02:01,682 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2024-11-20 15:02:01,684 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2024-11-20 15:02:01,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2024-11-20 15:02:01,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2024-11-20 15:02:01,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2024-11-20 15:02:01,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2024-11-20 15:02:01,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2024-11-20 15:02:01,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2024-11-20 15:02:01,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2024-11-20 15:02:01,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2024-11-20 15:02:01,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-20 15:02:01,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 15:02:01,889 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 3, 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] [2024-11-20 15:02:01,891 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 15:02:01,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:02:01 BoogieIcfgContainer [2024-11-20 15:02:01,892 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 15:02:01,893 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 15:02:01,893 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 15:02:01,893 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 15:02:01,893 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:01:28" (3/4) ... [2024-11-20 15:02:01,895 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 15:02:01,903 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-20 15:02:01,904 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-20 15:02:01,904 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 15:02:01,904 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-20 15:02:01,977 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 15:02:01,979 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 15:02:01,979 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 15:02:01,979 INFO L158 Benchmark]: Toolchain (without parser) took 34067.94ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 108.2MB in the beginning and 119.0MB in the end (delta: -10.8MB). Peak memory consumption was 171.6MB. Max. memory is 16.1GB. [2024-11-20 15:02:01,979 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 15:02:01,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.41ms. Allocated memory is still 163.6MB. Free memory was 108.2MB in the beginning and 94.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-20 15:02:01,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.26ms. Allocated memory is still 163.6MB. Free memory was 94.2MB in the beginning and 92.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 15:02:01,979 INFO L158 Benchmark]: Boogie Preprocessor took 33.57ms. Allocated memory is still 163.6MB. Free memory was 92.2MB in the beginning and 89.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 15:02:01,979 INFO L158 Benchmark]: RCFGBuilder took 378.73ms. Allocated memory is still 163.6MB. Free memory was 89.7MB in the beginning and 68.3MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 15:02:01,980 INFO L158 Benchmark]: TraceAbstraction took 33309.85ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 67.9MB in the beginning and 125.5MB in the end (delta: -57.6MB). Peak memory consumption was 123.4MB. Max. memory is 16.1GB. [2024-11-20 15:02:01,980 INFO L158 Benchmark]: Witness Printer took 85.86ms. Allocated memory is still 343.9MB. Free memory was 125.5MB in the beginning and 119.0MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-20 15:02:01,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 163.6MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.41ms. Allocated memory is still 163.6MB. Free memory was 108.2MB in the beginning and 94.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.26ms. Allocated memory is still 163.6MB. Free memory was 94.2MB in the beginning and 92.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.57ms. Allocated memory is still 163.6MB. Free memory was 92.2MB in the beginning and 89.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 378.73ms. Allocated memory is still 163.6MB. Free memory was 89.7MB in the beginning and 68.3MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 33309.85ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 67.9MB in the beginning and 125.5MB in the end (delta: -57.6MB). Peak memory consumption was 123.4MB. Max. memory is 16.1GB. * Witness Printer took 85.86ms. Allocated memory is still 343.9MB. Free memory was 125.5MB in the beginning and 119.0MB in the end (delta: 6.5MB). 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: -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: -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: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 87]: 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 1 procedures, 80 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 33.2s, OverallIterations: 41, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6284 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6284 mSDsluCounter, 29905 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26552 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19409 IncrementalHoareTripleChecker+Invalid, 19594 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 3353 mSDtfsCounter, 19409 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3021 GetRequests, 2347 SyntacticMatches, 14 SemanticMatches, 660 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3884 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1191occurred in iteration=30, InterpolantAutomatonStates: 450, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 3325 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 14.7s InterpolantComputationTime, 3881 NumberOfCodeBlocks, 3545 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 4879 ConstructedInterpolants, 245 QuantifiedInterpolants, 42088 SizeOfPredicates, 92 NumberOfNonLiveVariables, 4656 ConjunctsInSsa, 400 ConjunctsInUnsatCore, 80 InterpolantComputations, 25 PerfectInterpolantSequences, 9416/11238 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 24 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 15:02:02,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE