./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../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 c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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-?-c7c6ca5-m [2024-11-09 08:07:32,786 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 08:07:32,852 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 08:07:32,857 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 08:07:32,858 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 08:07:32,889 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 08:07:32,891 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 08:07:32,891 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 08:07:32,892 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 08:07:32,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 08:07:32,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 08:07:32,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 08:07:32,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 08:07:32,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 08:07:32,898 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 08:07:32,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 08:07:32,899 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 08:07:32,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 08:07:32,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 08:07:32,900 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 08:07:32,901 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 08:07:32,901 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 08:07:32,902 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 08:07:32,903 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 08:07:32,903 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 08:07:32,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 08:07:32,903 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 08:07:32,904 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 08:07:32,904 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 08:07:32,904 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 08:07:32,904 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 08:07:32,905 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 08:07:32,905 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 08:07:32,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 08:07:32,905 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 08:07:32,906 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 08:07:32,906 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 08:07:32,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 08:07:32,907 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 08:07:32,907 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 08:07:32,907 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 08:07:32,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 08:07:32,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 970cab0a23b690f163a0a51afef8881644c6447187bc11bbe1f60a2a40cf01a7 [2024-11-09 08:07:33,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 08:07:33,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 08:07:33,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 08:07:33,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 08:07:33,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 08:07:33,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-09 08:07:34,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 08:07:34,879 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 08:07:34,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-09 08:07:34,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b49e024/55796fe5123d436e905733e9ed4a4460/FLAG9e1ba5bf4 [2024-11-09 08:07:34,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69b49e024/55796fe5123d436e905733e9ed4a4460 [2024-11-09 08:07:34,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 08:07:34,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 08:07:34,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 08:07:34,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 08:07:34,928 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 08:07:34,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:07:34" (1/1) ... [2024-11-09 08:07:34,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cef5b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:34, skipping insertion in model container [2024-11-09 08:07:34,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:07:34" (1/1) ... [2024-11-09 08:07:34,958 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 08:07:35,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 08:07:35,261 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 08:07:35,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 08:07:35,333 INFO L204 MainTranslator]: Completed translation [2024-11-09 08:07:35,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35 WrapperNode [2024-11-09 08:07:35,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 08:07:35,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 08:07:35,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 08:07:35,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 08:07:35,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,375 INFO L138 Inliner]: procedures = 42, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 153 [2024-11-09 08:07:35,376 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 08:07:35,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 08:07:35,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 08:07:35,377 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 08:07:35,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,405 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 10, 1]. 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, 2, 1]. [2024-11-09 08:07:35,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 08:07:35,434 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 08:07:35,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 08:07:35,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 08:07:35,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (1/1) ... [2024-11-09 08:07:35,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 08:07:35,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:35,477 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) [2024-11-09 08:07:35,479 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 [2024-11-09 08:07:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 08:07:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 08:07:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 08:07:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 08:07:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 08:07:35,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 08:07:35,601 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 08:07:35,603 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 08:07:35,960 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-11-09 08:07:35,960 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 08:07:35,973 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 08:07:35,974 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 08:07:35,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:07:35 BoogieIcfgContainer [2024-11-09 08:07:35,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 08:07:35,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 08:07:35,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 08:07:35,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 08:07:35,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:07:34" (1/3) ... [2024-11-09 08:07:35,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7001e369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:07:35, skipping insertion in model container [2024-11-09 08:07:35,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:07:35" (2/3) ... [2024-11-09 08:07:35,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7001e369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:07:35, skipping insertion in model container [2024-11-09 08:07:35,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:07:35" (3/3) ... [2024-11-09 08:07:35,983 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2024-11-09 08:07:36,000 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 08:07:36,001 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2024-11-09 08:07:36,044 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 08:07:36,050 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;@336b2a68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 08:07:36,050 INFO L334 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2024-11-09 08:07:36,055 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) [2024-11-09 08:07:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 08:07:36,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:36,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 08:07:36,060 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)] === [2024-11-09 08:07:36,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-09 08:07:36,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:36,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254352499] [2024-11-09 08:07:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:36,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:36,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254352499] [2024-11-09 08:07:36,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254352499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:36,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:36,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 08:07:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468286171] [2024-11-09 08:07:36,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:36,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 08:07:36,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:36,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 08:07:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 08:07:36,323 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) [2024-11-09 08:07:36,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:36,390 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2024-11-09 08:07:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 08:07:36,392 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 [2024-11-09 08:07:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:36,400 INFO L225 Difference]: With dead ends: 77 [2024-11-09 08:07:36,400 INFO L226 Difference]: Without dead ends: 75 [2024-11-09 08:07:36,402 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 [2024-11-09 08:07:36,406 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 [2024-11-09 08:07:36,407 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] [2024-11-09 08:07:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-09 08:07:36,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-09 08:07:36,449 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) [2024-11-09 08:07:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2024-11-09 08:07:36,451 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 4 [2024-11-09 08:07:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:36,452 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2024-11-09 08:07:36,452 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) [2024-11-09 08:07:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2024-11-09 08:07:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 08:07:36,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:36,453 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 08:07:36,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 08:07:36,454 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)] === [2024-11-09 08:07:36,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:36,455 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-09 08:07:36,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:36,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813445642] [2024-11-09 08:07:36,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:36,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:36,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:36,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813445642] [2024-11-09 08:07:36,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813445642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:36,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:36,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 08:07:36,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072839389] [2024-11-09 08:07:36,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:36,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 08:07:36,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 08:07:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 08:07:36,638 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) [2024-11-09 08:07:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:36,709 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-11-09 08:07:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 08:07:36,710 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 [2024-11-09 08:07:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:36,712 INFO L225 Difference]: With dead ends: 79 [2024-11-09 08:07:36,712 INFO L226 Difference]: Without dead ends: 79 [2024-11-09 08:07:36,712 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 [2024-11-09 08:07:36,713 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:36,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:36,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-09 08:07:36,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2024-11-09 08:07:36,727 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) [2024-11-09 08:07:36,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 90 transitions. [2024-11-09 08:07:36,729 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 90 transitions. Word has length 4 [2024-11-09 08:07:36,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:36,729 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 90 transitions. [2024-11-09 08:07:36,729 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) [2024-11-09 08:07:36,730 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 90 transitions. [2024-11-09 08:07:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 08:07:36,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:36,730 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:36,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 08:07:36,731 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)] === [2024-11-09 08:07:36,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2024-11-09 08:07:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121477163] [2024-11-09 08:07:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:36,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121477163] [2024-11-09 08:07:36,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121477163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:36,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707730160] [2024-11-09 08:07:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:36,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:36,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:36,905 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) [2024-11-09 08:07:36,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 08:07:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:36,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 08:07:36,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:37,061 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 [2024-11-09 08:07:37,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:37,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:37,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707730160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:37,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:37,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 08:07:37,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294397686] [2024-11-09 08:07:37,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:37,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 08:07:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 08:07:37,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 08:07:37,239 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) [2024-11-09 08:07:37,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:37,372 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-11-09 08:07:37,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 08:07:37,373 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 [2024-11-09 08:07:37,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:37,374 INFO L225 Difference]: With dead ends: 89 [2024-11-09 08:07:37,376 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 08:07:37,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-09 08:07:37,377 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 [2024-11-09 08:07:37,378 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] [2024-11-09 08:07:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 08:07:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-09 08:07:37,390 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) [2024-11-09 08:07:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2024-11-09 08:07:37,391 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 8 [2024-11-09 08:07:37,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:37,392 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2024-11-09 08:07:37,392 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) [2024-11-09 08:07:37,392 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2024-11-09 08:07:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 08:07:37,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:37,393 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 08:07:37,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 08:07:37,593 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 [2024-11-09 08:07:37,594 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)] === [2024-11-09 08:07:37,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:37,594 INFO L85 PathProgramCache]: Analyzing trace with hash -4646110, now seen corresponding path program 1 times [2024-11-09 08:07:37,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:37,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548746023] [2024-11-09 08:07:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:37,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:37,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 08:07:37,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:37,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548746023] [2024-11-09 08:07:37,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548746023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:37,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:37,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 08:07:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990489177] [2024-11-09 08:07:37,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:37,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 08:07:37,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:37,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 08:07:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 08:07:37,698 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) [2024-11-09 08:07:37,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:37,741 INFO L93 Difference]: Finished difference Result 88 states and 103 transitions. [2024-11-09 08:07:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 08:07:37,742 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 [2024-11-09 08:07:37,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:37,743 INFO L225 Difference]: With dead ends: 88 [2024-11-09 08:07:37,743 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 08:07:37,743 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 [2024-11-09 08:07:37,744 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 [2024-11-09 08:07:37,744 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] [2024-11-09 08:07:37,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 08:07:37,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-09 08:07:37,752 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) [2024-11-09 08:07:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2024-11-09 08:07:37,758 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 13 [2024-11-09 08:07:37,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:37,758 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2024-11-09 08:07:37,758 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) [2024-11-09 08:07:37,759 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2024-11-09 08:07:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 08:07:37,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:37,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:37,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 08:07:37,760 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)] === [2024-11-09 08:07:37,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:37,762 INFO L85 PathProgramCache]: Analyzing trace with hash -108924891, now seen corresponding path program 1 times [2024-11-09 08:07:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433348387] [2024-11-09 08:07:37,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:37,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 08:07:37,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:37,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433348387] [2024-11-09 08:07:37,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433348387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:37,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:37,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 08:07:37,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492872068] [2024-11-09 08:07:37,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:37,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 08:07:37,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 08:07:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 08:07:37,856 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) [2024-11-09 08:07:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:37,921 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2024-11-09 08:07:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 08:07:37,922 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 [2024-11-09 08:07:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:37,923 INFO L225 Difference]: With dead ends: 88 [2024-11-09 08:07:37,923 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 08:07:37,923 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 [2024-11-09 08:07:37,924 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:37,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 62 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:37,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 08:07:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-09 08:07:37,933 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) [2024-11-09 08:07:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2024-11-09 08:07:37,936 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 17 [2024-11-09 08:07:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:37,936 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2024-11-09 08:07:37,937 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) [2024-11-09 08:07:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2024-11-09 08:07:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 08:07:37,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:37,937 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:37,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 08:07:37,938 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)] === [2024-11-09 08:07:37,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:37,938 INFO L85 PathProgramCache]: Analyzing trace with hash -108927737, now seen corresponding path program 1 times [2024-11-09 08:07:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495246701] [2024-11-09 08:07:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:37,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495246701] [2024-11-09 08:07:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495246701] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806245681] [2024-11-09 08:07:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:37,997 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) [2024-11-09 08:07:37,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 08:07:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:38,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 08:07:38,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:38,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:38,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:38,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806245681] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:38,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:38,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-09 08:07:38,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720307339] [2024-11-09 08:07:38,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:38,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 08:07:38,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:38,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 08:07:38,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-09 08:07:38,114 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) [2024-11-09 08:07:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:38,144 INFO L93 Difference]: Finished difference Result 95 states and 108 transitions. [2024-11-09 08:07:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 08:07:38,145 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 [2024-11-09 08:07:38,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:38,145 INFO L225 Difference]: With dead ends: 95 [2024-11-09 08:07:38,145 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 08:07:38,145 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 [2024-11-09 08:07:38,146 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 [2024-11-09 08:07:38,146 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] [2024-11-09 08:07:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 08:07:38,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-09 08:07:38,151 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) [2024-11-09 08:07:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2024-11-09 08:07:38,152 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 17 [2024-11-09 08:07:38,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:38,152 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2024-11-09 08:07:38,152 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) [2024-11-09 08:07:38,152 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2024-11-09 08:07:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 08:07:38,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:38,153 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2024-11-09 08:07:38,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 08:07:38,357 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 [2024-11-09 08:07:38,358 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)] === [2024-11-09 08:07:38,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2024-11-09 08:07:38,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:38,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635110568] [2024-11-09 08:07:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:38,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:38,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:38,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635110568] [2024-11-09 08:07:38,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635110568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:38,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851279212] [2024-11-09 08:07:38,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:07:38,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:38,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:38,600 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) [2024-11-09 08:07:38,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 08:07:38,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 08:07:38,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:07:38,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 08:07:38,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:38,673 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 [2024-11-09 08:07:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:38,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 08:07:38,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851279212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:38,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 08:07:38,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2024-11-09 08:07:38,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539027433] [2024-11-09 08:07:38,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:38,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 08:07:38,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:38,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 08:07:38,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-09 08:07:38,884 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) [2024-11-09 08:07:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:38,961 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2024-11-09 08:07:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 08:07:38,961 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 [2024-11-09 08:07:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:38,962 INFO L225 Difference]: With dead ends: 94 [2024-11-09 08:07:38,962 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 08:07:38,963 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 [2024-11-09 08:07:38,963 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 2 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-09 08:07:38,964 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] [2024-11-09 08:07:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 08:07:38,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-09 08:07:38,967 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) [2024-11-09 08:07:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-11-09 08:07:38,968 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 20 [2024-11-09 08:07:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:38,968 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-11-09 08:07:38,969 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) [2024-11-09 08:07:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-11-09 08:07:38,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 08:07:38,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:38,970 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:38,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 08:07:39,173 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 [2024-11-09 08:07:39,174 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)] === [2024-11-09 08:07:39,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:39,175 INFO L85 PathProgramCache]: Analyzing trace with hash 150695803, now seen corresponding path program 2 times [2024-11-09 08:07:39,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:39,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493380740] [2024-11-09 08:07:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:39,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493380740] [2024-11-09 08:07:39,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493380740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:39,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794725478] [2024-11-09 08:07:39,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:07:39,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:39,286 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) [2024-11-09 08:07:39,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 08:07:39,353 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 08:07:39,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:07:39,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 08:07:39,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:39,360 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 [2024-11-09 08:07:39,443 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 08:07:39,443 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 [2024-11-09 08:07:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-09 08:07:39,463 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 08:07:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794725478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:39,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 08:07:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2024-11-09 08:07:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29210994] [2024-11-09 08:07:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:39,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 08:07:39,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 08:07:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-09 08:07:39,464 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) [2024-11-09 08:07:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:39,533 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-09 08:07:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 08:07:39,534 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 [2024-11-09 08:07:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:39,534 INFO L225 Difference]: With dead ends: 86 [2024-11-09 08:07:39,534 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 08:07:39,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-09 08:07:39,535 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:39,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 56 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 08:07:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-09 08:07:39,542 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) [2024-11-09 08:07:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2024-11-09 08:07:39,546 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 33 [2024-11-09 08:07:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:39,546 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2024-11-09 08:07:39,546 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) [2024-11-09 08:07:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2024-11-09 08:07:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 08:07:39,547 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:39,547 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:39,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 08:07:39,748 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 [2024-11-09 08:07:39,748 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)] === [2024-11-09 08:07:39,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:39,748 INFO L85 PathProgramCache]: Analyzing trace with hash 150695804, now seen corresponding path program 1 times [2024-11-09 08:07:39,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:39,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183880534] [2024-11-09 08:07:39,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:39,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183880534] [2024-11-09 08:07:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183880534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187828372] [2024-11-09 08:07:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:39,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:39,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:39,867 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) [2024-11-09 08:07:39,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 08:07:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:39,944 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 08:07:39,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:39,994 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:39,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 08:07:40,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187828372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:40,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:40,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-09 08:07:40,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277924916] [2024-11-09 08:07:40,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:40,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 08:07:40,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:40,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 08:07:40,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-09 08:07:40,086 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) [2024-11-09 08:07:40,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:40,125 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2024-11-09 08:07:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 08:07:40,125 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 [2024-11-09 08:07:40,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:40,126 INFO L225 Difference]: With dead ends: 94 [2024-11-09 08:07:40,126 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 08:07:40,127 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 [2024-11-09 08:07:40,128 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 [2024-11-09 08:07:40,128 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] [2024-11-09 08:07:40,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 08:07:40,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-09 08:07:40,131 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) [2024-11-09 08:07:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2024-11-09 08:07:40,132 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 33 [2024-11-09 08:07:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:40,132 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2024-11-09 08:07:40,132 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) [2024-11-09 08:07:40,132 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2024-11-09 08:07:40,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 08:07:40,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:40,133 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:40,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 08:07:40,337 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 [2024-11-09 08:07:40,338 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)] === [2024-11-09 08:07:40,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash -629609034, now seen corresponding path program 2 times [2024-11-09 08:07:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:40,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973546272] [2024-11-09 08:07:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:40,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 08:07:40,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:40,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973546272] [2024-11-09 08:07:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973546272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:40,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 08:07:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181115600] [2024-11-09 08:07:40,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:40,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 08:07:40,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:40,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 08:07:40,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 08:07:40,626 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) [2024-11-09 08:07:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:40,721 INFO L93 Difference]: Finished difference Result 140 states and 170 transitions. [2024-11-09 08:07:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 08:07:40,721 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 [2024-11-09 08:07:40,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:40,722 INFO L225 Difference]: With dead ends: 140 [2024-11-09 08:07:40,722 INFO L226 Difference]: Without dead ends: 140 [2024-11-09 08:07:40,722 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 [2024-11-09 08:07:40,723 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 [2024-11-09 08:07:40,723 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] [2024-11-09 08:07:40,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-09 08:07:40,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2024-11-09 08:07:40,729 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) [2024-11-09 08:07:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-11-09 08:07:40,730 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 41 [2024-11-09 08:07:40,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:40,730 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-11-09 08:07:40,730 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) [2024-11-09 08:07:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-11-09 08:07:40,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 08:07:40,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:40,731 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:40,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 08:07:40,732 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)] === [2024-11-09 08:07:40,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash -560573000, now seen corresponding path program 1 times [2024-11-09 08:07:40,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89862017] [2024-11-09 08:07:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:40,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:40,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:40,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89862017] [2024-11-09 08:07:40,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89862017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:40,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:40,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 08:07:40,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813315402] [2024-11-09 08:07:40,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:40,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 08:07:40,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 08:07:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 08:07:40,888 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) [2024-11-09 08:07:41,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:41,025 INFO L93 Difference]: Finished difference Result 204 states and 270 transitions. [2024-11-09 08:07:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 08:07:41,025 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 [2024-11-09 08:07:41,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:41,026 INFO L225 Difference]: With dead ends: 204 [2024-11-09 08:07:41,026 INFO L226 Difference]: Without dead ends: 204 [2024-11-09 08:07:41,027 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 [2024-11-09 08:07:41,027 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 [2024-11-09 08:07:41,027 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] [2024-11-09 08:07:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-09 08:07:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 153. [2024-11-09 08:07:41,034 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) [2024-11-09 08:07:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 193 transitions. [2024-11-09 08:07:41,035 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 193 transitions. Word has length 44 [2024-11-09 08:07:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:41,035 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 193 transitions. [2024-11-09 08:07:41,035 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) [2024-11-09 08:07:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 193 transitions. [2024-11-09 08:07:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 08:07:41,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:41,038 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:41,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 08:07:41,039 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)] === [2024-11-09 08:07:41,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:41,039 INFO L85 PathProgramCache]: Analyzing trace with hash 935128925, now seen corresponding path program 1 times [2024-11-09 08:07:41,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:41,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159228980] [2024-11-09 08:07:41,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:41,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 08:07:41,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:41,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159228980] [2024-11-09 08:07:41,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159228980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:41,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782659389] [2024-11-09 08:07:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:41,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:41,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:41,304 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) [2024-11-09 08:07:41,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 08:07:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:41,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 08:07:41,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:41,397 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 [2024-11-09 08:07:41,402 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 [2024-11-09 08:07:41,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 08:07:41,666 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 [2024-11-09 08:07:41,676 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 08:07:41,676 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 [2024-11-09 08:07:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:41,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782659389] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:42,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2024-11-09 08:07:42,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435094095] [2024-11-09 08:07:42,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:42,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 08:07:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 08:07:42,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-09 08:07:42,437 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) [2024-11-09 08:07:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:42,781 INFO L93 Difference]: Finished difference Result 343 states and 447 transitions. [2024-11-09 08:07:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 08:07:42,782 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 [2024-11-09 08:07:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:42,784 INFO L225 Difference]: With dead ends: 343 [2024-11-09 08:07:42,784 INFO L226 Difference]: Without dead ends: 343 [2024-11-09 08:07:42,785 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 [2024-11-09 08:07:42,785 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:42,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 728 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 08:07:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-09 08:07:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 311. [2024-11-09 08:07:42,794 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) [2024-11-09 08:07:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 427 transitions. [2024-11-09 08:07:42,795 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 427 transitions. Word has length 48 [2024-11-09 08:07:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:42,796 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 427 transitions. [2024-11-09 08:07:42,796 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) [2024-11-09 08:07:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 427 transitions. [2024-11-09 08:07:42,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 08:07:42,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:42,797 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] [2024-11-09 08:07:42,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 08:07:42,997 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 [2024-11-09 08:07:42,997 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)] === [2024-11-09 08:07:42,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1535058889, now seen corresponding path program 1 times [2024-11-09 08:07:42,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:42,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247210768] [2024-11-09 08:07:42,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:42,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 08:07:43,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247210768] [2024-11-09 08:07:43,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247210768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:43,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33156698] [2024-11-09 08:07:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:43,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:43,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:43,217 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) [2024-11-09 08:07:43,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 08:07:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:43,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 08:07:43,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:43,312 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 [2024-11-09 08:07:43,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 08:07:43,479 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 [2024-11-09 08:07:43,488 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 08:07:43,489 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 [2024-11-09 08:07:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:43,573 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:43,703 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 [2024-11-09 08:07:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:43,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33156698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:43,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:43,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2024-11-09 08:07:43,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343545990] [2024-11-09 08:07:43,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:43,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 08:07:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:43,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 08:07:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-09 08:07:43,836 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) [2024-11-09 08:07:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:44,176 INFO L93 Difference]: Finished difference Result 841 states and 1236 transitions. [2024-11-09 08:07:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 08:07:44,176 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 [2024-11-09 08:07:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:44,179 INFO L225 Difference]: With dead ends: 841 [2024-11-09 08:07:44,180 INFO L226 Difference]: Without dead ends: 841 [2024-11-09 08:07:44,181 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 [2024-11-09 08:07:44,182 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 [2024-11-09 08:07:44,182 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] [2024-11-09 08:07:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2024-11-09 08:07:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 369. [2024-11-09 08:07:44,192 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) [2024-11-09 08:07:44,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 497 transitions. [2024-11-09 08:07:44,193 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 497 transitions. Word has length 48 [2024-11-09 08:07:44,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:44,193 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 497 transitions. [2024-11-09 08:07:44,193 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) [2024-11-09 08:07:44,193 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 497 transitions. [2024-11-09 08:07:44,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 08:07:44,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:44,194 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] [2024-11-09 08:07:44,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 08:07:44,395 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 [2024-11-09 08:07:44,396 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)] === [2024-11-09 08:07:44,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1075688002, now seen corresponding path program 1 times [2024-11-09 08:07:44,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:44,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554241191] [2024-11-09 08:07:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:44,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:44,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554241191] [2024-11-09 08:07:44,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554241191] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:44,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:44,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 08:07:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037999922] [2024-11-09 08:07:44,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:44,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 08:07:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 08:07:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 08:07:44,528 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) [2024-11-09 08:07:44,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:44,599 INFO L93 Difference]: Finished difference Result 385 states and 508 transitions. [2024-11-09 08:07:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 08:07:44,600 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 [2024-11-09 08:07:44,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:44,601 INFO L225 Difference]: With dead ends: 385 [2024-11-09 08:07:44,601 INFO L226 Difference]: Without dead ends: 385 [2024-11-09 08:07:44,601 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 [2024-11-09 08:07:44,602 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 2 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:44,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 279 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:44,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-09 08:07:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 381. [2024-11-09 08:07:44,609 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) [2024-11-09 08:07:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 504 transitions. [2024-11-09 08:07:44,610 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 504 transitions. Word has length 49 [2024-11-09 08:07:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:44,610 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 504 transitions. [2024-11-09 08:07:44,610 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) [2024-11-09 08:07:44,610 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 504 transitions. [2024-11-09 08:07:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 08:07:44,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:44,612 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] [2024-11-09 08:07:44,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 08:07:44,612 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)] === [2024-11-09 08:07:44,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:44,613 INFO L85 PathProgramCache]: Analyzing trace with hash -924079407, now seen corresponding path program 1 times [2024-11-09 08:07:44,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:44,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512177949] [2024-11-09 08:07:44,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:44,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:44,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512177949] [2024-11-09 08:07:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512177949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 08:07:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414273713] [2024-11-09 08:07:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:44,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 08:07:44,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:44,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 08:07:44,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 08:07:44,664 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) [2024-11-09 08:07:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:44,674 INFO L93 Difference]: Finished difference Result 401 states and 524 transitions. [2024-11-09 08:07:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 08:07:44,674 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 [2024-11-09 08:07:44,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:44,676 INFO L225 Difference]: With dead ends: 401 [2024-11-09 08:07:44,676 INFO L226 Difference]: Without dead ends: 401 [2024-11-09 08:07:44,676 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 [2024-11-09 08:07:44,677 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 [2024-11-09 08:07:44,677 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] [2024-11-09 08:07:44,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-09 08:07:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2024-11-09 08:07:44,683 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) [2024-11-09 08:07:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 524 transitions. [2024-11-09 08:07:44,684 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 524 transitions. Word has length 53 [2024-11-09 08:07:44,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:44,684 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 524 transitions. [2024-11-09 08:07:44,684 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) [2024-11-09 08:07:44,684 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 524 transitions. [2024-11-09 08:07:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 08:07:44,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:44,685 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] [2024-11-09 08:07:44,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 08:07:44,685 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)] === [2024-11-09 08:07:44,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1294883028, now seen corresponding path program 1 times [2024-11-09 08:07:44,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:44,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91926230] [2024-11-09 08:07:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:44,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:44,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91926230] [2024-11-09 08:07:44,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91926230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:44,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:44,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 08:07:44,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017395065] [2024-11-09 08:07:44,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:44,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 08:07:44,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:44,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 08:07:44,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 08:07:44,793 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) [2024-11-09 08:07:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:44,873 INFO L93 Difference]: Finished difference Result 409 states and 522 transitions. [2024-11-09 08:07:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 08:07:44,874 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 [2024-11-09 08:07:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:44,875 INFO L225 Difference]: With dead ends: 409 [2024-11-09 08:07:44,876 INFO L226 Difference]: Without dead ends: 409 [2024-11-09 08:07:44,876 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 [2024-11-09 08:07:44,876 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:44,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 270 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:44,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-09 08:07:44,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 399. [2024-11-09 08:07:44,884 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) [2024-11-09 08:07:44,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 517 transitions. [2024-11-09 08:07:44,886 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 517 transitions. Word has length 55 [2024-11-09 08:07:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:44,886 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 517 transitions. [2024-11-09 08:07:44,886 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) [2024-11-09 08:07:44,887 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 517 transitions. [2024-11-09 08:07:44,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 08:07:44,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:44,888 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] [2024-11-09 08:07:44,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 08:07:44,889 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)] === [2024-11-09 08:07:44,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:44,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1552311941, now seen corresponding path program 1 times [2024-11-09 08:07:44,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:44,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176141277] [2024-11-09 08:07:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:44,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:44,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:44,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176141277] [2024-11-09 08:07:44,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176141277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:44,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:44,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 08:07:44,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466720594] [2024-11-09 08:07:44,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:44,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 08:07:44,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:44,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 08:07:44,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 08:07:44,964 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) [2024-11-09 08:07:45,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:45,024 INFO L93 Difference]: Finished difference Result 442 states and 575 transitions. [2024-11-09 08:07:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 08:07:45,025 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 [2024-11-09 08:07:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:45,027 INFO L225 Difference]: With dead ends: 442 [2024-11-09 08:07:45,027 INFO L226 Difference]: Without dead ends: 442 [2024-11-09 08:07:45,027 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 [2024-11-09 08:07:45,028 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:45,028 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 220 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-09 08:07:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 409. [2024-11-09 08:07:45,034 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) [2024-11-09 08:07:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 524 transitions. [2024-11-09 08:07:45,035 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 524 transitions. Word has length 58 [2024-11-09 08:07:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:45,035 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 524 transitions. [2024-11-09 08:07:45,035 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) [2024-11-09 08:07:45,036 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 524 transitions. [2024-11-09 08:07:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 08:07:45,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:45,036 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] [2024-11-09 08:07:45,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 08:07:45,037 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)] === [2024-11-09 08:07:45,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash 568191740, now seen corresponding path program 2 times [2024-11-09 08:07:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:45,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028222135] [2024-11-09 08:07:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 08:07:45,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028222135] [2024-11-09 08:07:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028222135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114667163] [2024-11-09 08:07:45,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:07:45,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:45,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:45,421 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) [2024-11-09 08:07:45,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 08:07:45,529 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 08:07:45,529 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:07:45,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 08:07:45,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-09 08:07:45,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 08:07:45,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114667163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:45,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 08:07:45,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2024-11-09 08:07:45,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429730786] [2024-11-09 08:07:45,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:45,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 08:07:45,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:45,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 08:07:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-11-09 08:07:45,748 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) [2024-11-09 08:07:46,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:46,013 INFO L93 Difference]: Finished difference Result 428 states and 546 transitions. [2024-11-09 08:07:46,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 08:07:46,014 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 [2024-11-09 08:07:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:46,016 INFO L225 Difference]: With dead ends: 428 [2024-11-09 08:07:46,016 INFO L226 Difference]: Without dead ends: 428 [2024-11-09 08:07:46,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2024-11-09 08:07:46,017 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:46,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 510 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 08:07:46,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-11-09 08:07:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 408. [2024-11-09 08:07:46,023 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) [2024-11-09 08:07:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 522 transitions. [2024-11-09 08:07:46,024 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 522 transitions. Word has length 60 [2024-11-09 08:07:46,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:46,024 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 522 transitions. [2024-11-09 08:07:46,024 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) [2024-11-09 08:07:46,024 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 522 transitions. [2024-11-09 08:07:46,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 08:07:46,025 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:46,025 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] [2024-11-09 08:07:46,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 08:07:46,229 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 [2024-11-09 08:07:46,230 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)] === [2024-11-09 08:07:46,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1018128091, now seen corresponding path program 1 times [2024-11-09 08:07:46,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952093268] [2024-11-09 08:07:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:46,501 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 08:07:46,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:46,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952093268] [2024-11-09 08:07:46,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952093268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:46,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:46,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 08:07:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779746847] [2024-11-09 08:07:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:46,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 08:07:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 08:07:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 08:07:46,503 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) [2024-11-09 08:07:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:46,560 INFO L93 Difference]: Finished difference Result 407 states and 521 transitions. [2024-11-09 08:07:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 08:07:46,561 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 [2024-11-09 08:07:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:46,562 INFO L225 Difference]: With dead ends: 407 [2024-11-09 08:07:46,562 INFO L226 Difference]: Without dead ends: 404 [2024-11-09 08:07:46,562 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 [2024-11-09 08:07:46,563 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:46,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 158 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:46,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-09 08:07:46,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2024-11-09 08:07:46,572 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) [2024-11-09 08:07:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 492 transitions. [2024-11-09 08:07:46,573 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 492 transitions. Word has length 61 [2024-11-09 08:07:46,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:46,573 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 492 transitions. [2024-11-09 08:07:46,574 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) [2024-11-09 08:07:46,574 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 492 transitions. [2024-11-09 08:07:46,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 08:07:46,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:46,577 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] [2024-11-09 08:07:46,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 08:07:46,578 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)] === [2024-11-09 08:07:46,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:46,578 INFO L85 PathProgramCache]: Analyzing trace with hash 44185747, now seen corresponding path program 1 times [2024-11-09 08:07:46,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:46,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766802715] [2024-11-09 08:07:46,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:46,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:46,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766802715] [2024-11-09 08:07:46,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766802715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:46,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755201063] [2024-11-09 08:07:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:46,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:46,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:46,701 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) [2024-11-09 08:07:46,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 08:07:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:46,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 08:07:46,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:46,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755201063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:46,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-09 08:07:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229940272] [2024-11-09 08:07:46,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:46,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 08:07:46,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:46,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 08:07:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 08:07:46,885 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) [2024-11-09 08:07:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:46,977 INFO L93 Difference]: Finished difference Result 394 states and 478 transitions. [2024-11-09 08:07:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 08:07:46,978 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 [2024-11-09 08:07:46,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:46,979 INFO L225 Difference]: With dead ends: 394 [2024-11-09 08:07:46,979 INFO L226 Difference]: Without dead ends: 394 [2024-11-09 08:07:46,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-09 08:07:46,980 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 95 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-09 08:07:46,981 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] [2024-11-09 08:07:46,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-09 08:07:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 380. [2024-11-09 08:07:46,988 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) [2024-11-09 08:07:46,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 472 transitions. [2024-11-09 08:07:46,990 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 472 transitions. Word has length 62 [2024-11-09 08:07:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:46,990 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 472 transitions. [2024-11-09 08:07:46,990 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) [2024-11-09 08:07:46,990 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 472 transitions. [2024-11-09 08:07:46,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 08:07:46,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:46,991 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] [2024-11-09 08:07:47,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 08:07:47,191 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 [2024-11-09 08:07:47,192 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)] === [2024-11-09 08:07:47,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash -779132351, now seen corresponding path program 1 times [2024-11-09 08:07:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129768556] [2024-11-09 08:07:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 08:07:47,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:47,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129768556] [2024-11-09 08:07:47,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129768556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:47,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921259808] [2024-11-09 08:07:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:47,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:47,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:47,520 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) [2024-11-09 08:07:47,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 08:07:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:47,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 08:07:47,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:47,775 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 [2024-11-09 08:07:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 08:07:47,806 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 08:07:47,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921259808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:47,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 08:07:47,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2024-11-09 08:07:47,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352174245] [2024-11-09 08:07:47,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:47,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 08:07:47,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:47,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 08:07:47,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-09 08:07:47,808 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) [2024-11-09 08:07:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:48,013 INFO L93 Difference]: Finished difference Result 376 states and 461 transitions. [2024-11-09 08:07:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 08:07:48,014 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 [2024-11-09 08:07:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:48,015 INFO L225 Difference]: With dead ends: 376 [2024-11-09 08:07:48,015 INFO L226 Difference]: Without dead ends: 376 [2024-11-09 08:07:48,016 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 [2024-11-09 08:07:48,016 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 [2024-11-09 08:07:48,017 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] [2024-11-09 08:07:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-09 08:07:48,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 358. [2024-11-09 08:07:48,023 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) [2024-11-09 08:07:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 442 transitions. [2024-11-09 08:07:48,025 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 442 transitions. Word has length 62 [2024-11-09 08:07:48,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:48,025 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 442 transitions. [2024-11-09 08:07:48,025 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) [2024-11-09 08:07:48,026 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 442 transitions. [2024-11-09 08:07:48,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 08:07:48,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:48,026 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] [2024-11-09 08:07:48,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 08:07:48,227 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 [2024-11-09 08:07:48,228 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)] === [2024-11-09 08:07:48,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -937242689, now seen corresponding path program 1 times [2024-11-09 08:07:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:48,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3032419] [2024-11-09 08:07:48,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:48,312 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:48,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:48,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3032419] [2024-11-09 08:07:48,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3032419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:48,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:48,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 08:07:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726382705] [2024-11-09 08:07:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:48,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 08:07:48,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 08:07:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 08:07:48,313 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) [2024-11-09 08:07:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:48,334 INFO L93 Difference]: Finished difference Result 357 states and 437 transitions. [2024-11-09 08:07:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 08:07:48,335 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 [2024-11-09 08:07:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:48,336 INFO L225 Difference]: With dead ends: 357 [2024-11-09 08:07:48,336 INFO L226 Difference]: Without dead ends: 357 [2024-11-09 08:07:48,337 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 [2024-11-09 08:07:48,337 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 [2024-11-09 08:07:48,337 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] [2024-11-09 08:07:48,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-09 08:07:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-09 08:07:48,342 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) [2024-11-09 08:07:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 437 transitions. [2024-11-09 08:07:48,343 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 437 transitions. Word has length 64 [2024-11-09 08:07:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:48,344 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 437 transitions. [2024-11-09 08:07:48,344 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) [2024-11-09 08:07:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 437 transitions. [2024-11-09 08:07:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 08:07:48,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:48,345 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] [2024-11-09 08:07:48,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 08:07:48,345 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)] === [2024-11-09 08:07:48,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:48,345 INFO L85 PathProgramCache]: Analyzing trace with hash -937242688, now seen corresponding path program 1 times [2024-11-09 08:07:48,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:48,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044454166] [2024-11-09 08:07:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:48,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:48,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:48,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044454166] [2024-11-09 08:07:48,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044454166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:48,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:48,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 08:07:48,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380977108] [2024-11-09 08:07:48,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:48,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 08:07:48,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:48,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 08:07:48,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 08:07:48,458 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) [2024-11-09 08:07:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:48,575 INFO L93 Difference]: Finished difference Result 601 states and 749 transitions. [2024-11-09 08:07:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 08:07:48,575 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 [2024-11-09 08:07:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:48,577 INFO L225 Difference]: With dead ends: 601 [2024-11-09 08:07:48,577 INFO L226 Difference]: Without dead ends: 568 [2024-11-09 08:07:48,578 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 [2024-11-09 08:07:48,579 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 [2024-11-09 08:07:48,579 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] [2024-11-09 08:07:48,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-09 08:07:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 426. [2024-11-09 08:07:48,585 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) [2024-11-09 08:07:48,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 532 transitions. [2024-11-09 08:07:48,586 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 532 transitions. Word has length 64 [2024-11-09 08:07:48,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:48,587 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 532 transitions. [2024-11-09 08:07:48,588 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) [2024-11-09 08:07:48,588 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 532 transitions. [2024-11-09 08:07:48,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 08:07:48,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:48,589 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] [2024-11-09 08:07:48,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 08:07:48,590 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)] === [2024-11-09 08:07:48,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:48,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1948359938, now seen corresponding path program 1 times [2024-11-09 08:07:48,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:48,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232467754] [2024-11-09 08:07:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:48,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:48,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232467754] [2024-11-09 08:07:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232467754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 08:07:48,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707627062] [2024-11-09 08:07:48,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:48,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 08:07:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 08:07:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 08:07:48,681 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) [2024-11-09 08:07:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:48,742 INFO L93 Difference]: Finished difference Result 404 states and 502 transitions. [2024-11-09 08:07:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 08:07:48,743 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 [2024-11-09 08:07:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:48,744 INFO L225 Difference]: With dead ends: 404 [2024-11-09 08:07:48,744 INFO L226 Difference]: Without dead ends: 388 [2024-11-09 08:07:48,745 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 [2024-11-09 08:07:48,746 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:48,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 160 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-09 08:07:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2024-11-09 08:07:48,751 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) [2024-11-09 08:07:48,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 486 transitions. [2024-11-09 08:07:48,752 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 486 transitions. Word has length 64 [2024-11-09 08:07:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:48,752 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 486 transitions. [2024-11-09 08:07:48,753 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) [2024-11-09 08:07:48,753 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 486 transitions. [2024-11-09 08:07:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 08:07:48,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:48,753 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] [2024-11-09 08:07:48,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 08:07:48,754 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)] === [2024-11-09 08:07:48,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1384325621, now seen corresponding path program 1 times [2024-11-09 08:07:48,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:48,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985053423] [2024-11-09 08:07:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 08:07:49,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985053423] [2024-11-09 08:07:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985053423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348222042] [2024-11-09 08:07:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:49,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:49,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:49,110 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) [2024-11-09 08:07:49,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 08:07:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:49,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 08:07:49,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:49,391 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 [2024-11-09 08:07:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 08:07:49,425 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:49,562 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 08:07:49,563 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 [2024-11-09 08:07:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 08:07:49,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348222042] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:49,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 26 [2024-11-09 08:07:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316802704] [2024-11-09 08:07:49,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:49,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 08:07:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:49,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 08:07:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2024-11-09 08:07:49,643 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) [2024-11-09 08:07:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:51,506 INFO L93 Difference]: Finished difference Result 1223 states and 1608 transitions. [2024-11-09 08:07:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 08:07:51,506 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 [2024-11-09 08:07:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:51,510 INFO L225 Difference]: With dead ends: 1223 [2024-11-09 08:07:51,511 INFO L226 Difference]: Without dead ends: 1223 [2024-11-09 08:07:51,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 08:07:51,515 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 518 mSDsluCounter, 3960 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:51,516 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 4211 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 08:07:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-09 08:07:51,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 466. [2024-11-09 08:07:51,532 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) [2024-11-09 08:07:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 583 transitions. [2024-11-09 08:07:51,534 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 583 transitions. Word has length 67 [2024-11-09 08:07:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:51,534 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 583 transitions. [2024-11-09 08:07:51,536 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) [2024-11-09 08:07:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 583 transitions. [2024-11-09 08:07:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 08:07:51,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:51,537 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] [2024-11-09 08:07:51,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 08:07:51,737 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 [2024-11-09 08:07:51,738 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)] === [2024-11-09 08:07:51,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1630169780, now seen corresponding path program 2 times [2024-11-09 08:07:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083831755] [2024-11-09 08:07:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-09 08:07:51,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:51,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083831755] [2024-11-09 08:07:51,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083831755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:51,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248230529] [2024-11-09 08:07:51,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:07:51,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:51,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:51,913 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) [2024-11-09 08:07:51,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 08:07:52,012 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 08:07:52,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:07:52,013 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 08:07:52,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-09 08:07:52,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 08:07:52,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248230529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:52,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 08:07:52,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-11-09 08:07:52,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539057694] [2024-11-09 08:07:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:52,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 08:07:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 08:07:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-09 08:07:52,192 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) [2024-11-09 08:07:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:52,435 INFO L93 Difference]: Finished difference Result 633 states and 775 transitions. [2024-11-09 08:07:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 08:07:52,435 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 [2024-11-09 08:07:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:52,437 INFO L225 Difference]: With dead ends: 633 [2024-11-09 08:07:52,438 INFO L226 Difference]: Without dead ends: 624 [2024-11-09 08:07:52,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-09 08:07:52,440 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 [2024-11-09 08:07:52,440 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] [2024-11-09 08:07:52,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-09 08:07:52,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 520. [2024-11-09 08:07:52,450 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) [2024-11-09 08:07:52,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 643 transitions. [2024-11-09 08:07:52,451 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 643 transitions. Word has length 69 [2024-11-09 08:07:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:52,452 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 643 transitions. [2024-11-09 08:07:52,452 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) [2024-11-09 08:07:52,452 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 643 transitions. [2024-11-09 08:07:52,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-09 08:07:52,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:52,453 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] [2024-11-09 08:07:52,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 08:07:52,653 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 [2024-11-09 08:07:52,654 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)] === [2024-11-09 08:07:52,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:52,655 INFO L85 PathProgramCache]: Analyzing trace with hash -391285385, now seen corresponding path program 1 times [2024-11-09 08:07:52,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:52,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591602653] [2024-11-09 08:07:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:52,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:52,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591602653] [2024-11-09 08:07:52,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591602653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:52,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536552853] [2024-11-09 08:07:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:52,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:52,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:52,860 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) [2024-11-09 08:07:52,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 08:07:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:52,978 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 08:07:52,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:52,993 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 [2024-11-09 08:07:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:53,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 08:07:53,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536552853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:53,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 08:07:53,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-09 08:07:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232159973] [2024-11-09 08:07:53,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:53,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 08:07:53,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 08:07:53,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 08:07:53,309 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) [2024-11-09 08:07:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:53,542 INFO L93 Difference]: Finished difference Result 614 states and 747 transitions. [2024-11-09 08:07:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 08:07:53,542 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 [2024-11-09 08:07:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:53,544 INFO L225 Difference]: With dead ends: 614 [2024-11-09 08:07:53,545 INFO L226 Difference]: Without dead ends: 614 [2024-11-09 08:07:53,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-09 08:07:53,546 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:53,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 316 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 08:07:53,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-11-09 08:07:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 550. [2024-11-09 08:07:53,556 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) [2024-11-09 08:07:53,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 675 transitions. [2024-11-09 08:07:53,557 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 675 transitions. Word has length 71 [2024-11-09 08:07:53,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:53,558 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 675 transitions. [2024-11-09 08:07:53,558 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) [2024-11-09 08:07:53,558 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 675 transitions. [2024-11-09 08:07:53,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 08:07:53,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:53,559 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] [2024-11-09 08:07:53,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 08:07:53,759 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 [2024-11-09 08:07:53,760 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)] === [2024-11-09 08:07:53,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:53,760 INFO L85 PathProgramCache]: Analyzing trace with hash 754653992, now seen corresponding path program 1 times [2024-11-09 08:07:53,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:53,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127566907] [2024-11-09 08:07:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:53,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 08:07:53,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:53,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127566907] [2024-11-09 08:07:53,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127566907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:53,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:53,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 08:07:53,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664587587] [2024-11-09 08:07:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:53,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 08:07:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 08:07:53,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-09 08:07:53,941 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) [2024-11-09 08:07:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:54,039 INFO L93 Difference]: Finished difference Result 553 states and 671 transitions. [2024-11-09 08:07:54,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 08:07:54,039 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 [2024-11-09 08:07:54,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:54,041 INFO L225 Difference]: With dead ends: 553 [2024-11-09 08:07:54,041 INFO L226 Difference]: Without dead ends: 553 [2024-11-09 08:07:54,042 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 [2024-11-09 08:07:54,042 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 46 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:54,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 246 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 08:07:54,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2024-11-09 08:07:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 546. [2024-11-09 08:07:54,052 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) [2024-11-09 08:07:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 665 transitions. [2024-11-09 08:07:54,053 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 665 transitions. Word has length 72 [2024-11-09 08:07:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:54,054 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 665 transitions. [2024-11-09 08:07:54,054 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) [2024-11-09 08:07:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 665 transitions. [2024-11-09 08:07:54,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 08:07:54,054 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:54,055 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] [2024-11-09 08:07:54,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 08:07:54,055 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)] === [2024-11-09 08:07:54,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash 214271563, now seen corresponding path program 1 times [2024-11-09 08:07:54,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:54,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533048591] [2024-11-09 08:07:54,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:54,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-09 08:07:54,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533048591] [2024-11-09 08:07:54,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533048591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:54,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363013797] [2024-11-09 08:07:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:54,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:54,431 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) [2024-11-09 08:07:54,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 08:07:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:54,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 08:07:54,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:54,791 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 [2024-11-09 08:07:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 08:07:54,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:54,967 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 08:07:54,968 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 [2024-11-09 08:07:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 08:07:55,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363013797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:55,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:55,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2024-11-09 08:07:55,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200473124] [2024-11-09 08:07:55,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:55,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 08:07:55,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 08:07:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2024-11-09 08:07:55,054 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) [2024-11-09 08:07:56,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:56,656 INFO L93 Difference]: Finished difference Result 1257 states and 1582 transitions. [2024-11-09 08:07:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 08:07:56,656 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 [2024-11-09 08:07:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:56,660 INFO L225 Difference]: With dead ends: 1257 [2024-11-09 08:07:56,660 INFO L226 Difference]: Without dead ends: 1250 [2024-11-09 08:07:56,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=1549, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 08:07:56,662 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 534 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 08:07:56,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 4928 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3356 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 08:07:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2024-11-09 08:07:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 547. [2024-11-09 08:07:56,673 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) [2024-11-09 08:07:56,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 666 transitions. [2024-11-09 08:07:56,674 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 666 transitions. Word has length 73 [2024-11-09 08:07:56,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:56,675 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 666 transitions. [2024-11-09 08:07:56,675 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) [2024-11-09 08:07:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 666 transitions. [2024-11-09 08:07:56,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 08:07:56,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:56,676 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:07:56,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 08:07:56,876 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 [2024-11-09 08:07:56,877 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)] === [2024-11-09 08:07:56,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:56,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1990946019, now seen corresponding path program 2 times [2024-11-09 08:07:56,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:56,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150122605] [2024-11-09 08:07:56,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:56,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 15 proven. 80 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 08:07:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150122605] [2024-11-09 08:07:57,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150122605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467317192] [2024-11-09 08:07:57,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:07:57,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:57,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:57,286 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) [2024-11-09 08:07:57,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 08:07:57,416 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 08:07:57,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:07:57,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 08:07:57,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:07:57,426 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 [2024-11-09 08:07:57,433 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 [2024-11-09 08:07:57,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 08:07:57,621 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 [2024-11-09 08:07:57,631 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 08:07:57,631 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 [2024-11-09 08:07:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:57,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:07:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:58,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467317192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:07:58,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:07:58,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2024-11-09 08:07:58,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642798336] [2024-11-09 08:07:58,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:07:58,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 08:07:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:58,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 08:07:58,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-09 08:07:58,608 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) [2024-11-09 08:07:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:59,090 INFO L93 Difference]: Finished difference Result 1197 states and 1478 transitions. [2024-11-09 08:07:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 08:07:59,091 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 [2024-11-09 08:07:59,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:59,094 INFO L225 Difference]: With dead ends: 1197 [2024-11-09 08:07:59,094 INFO L226 Difference]: Without dead ends: 1197 [2024-11-09 08:07:59,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2024-11-09 08:07:59,095 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 768 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2024-11-09 08:07:59,095 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] [2024-11-09 08:07:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-09 08:07:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1191. [2024-11-09 08:07:59,110 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) [2024-11-09 08:07:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1478 transitions. [2024-11-09 08:07:59,113 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1478 transitions. Word has length 76 [2024-11-09 08:07:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:59,113 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 1478 transitions. [2024-11-09 08:07:59,113 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) [2024-11-09 08:07:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1478 transitions. [2024-11-09 08:07:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-09 08:07:59,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:59,114 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] [2024-11-09 08:07:59,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 08:07:59,315 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 [2024-11-09 08:07:59,316 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)] === [2024-11-09 08:07:59,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 98625707, now seen corresponding path program 1 times [2024-11-09 08:07:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:59,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727480646] [2024-11-09 08:07:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-09 08:07:59,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:59,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727480646] [2024-11-09 08:07:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727480646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:07:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:07:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 08:07:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109678825] [2024-11-09 08:07:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:07:59,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 08:07:59,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:07:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 08:07:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 08:07:59,415 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) [2024-11-09 08:07:59,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:07:59,466 INFO L93 Difference]: Finished difference Result 818 states and 978 transitions. [2024-11-09 08:07:59,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 08:07:59,467 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 [2024-11-09 08:07:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:07:59,468 INFO L225 Difference]: With dead ends: 818 [2024-11-09 08:07:59,469 INFO L226 Difference]: Without dead ends: 590 [2024-11-09 08:07:59,469 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 [2024-11-09 08:07:59,469 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 [2024-11-09 08:07:59,470 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] [2024-11-09 08:07:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-09 08:07:59,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 176. [2024-11-09 08:07:59,474 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) [2024-11-09 08:07:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 200 transitions. [2024-11-09 08:07:59,475 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 200 transitions. Word has length 80 [2024-11-09 08:07:59,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:07:59,475 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 200 transitions. [2024-11-09 08:07:59,475 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) [2024-11-09 08:07:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 200 transitions. [2024-11-09 08:07:59,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 08:07:59,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:07:59,476 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] [2024-11-09 08:07:59,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-09 08:07:59,477 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)] === [2024-11-09 08:07:59,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:07:59,478 INFO L85 PathProgramCache]: Analyzing trace with hash 492345470, now seen corresponding path program 2 times [2024-11-09 08:07:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:07:59,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554339380] [2024-11-09 08:07:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:07:59,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:07:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:07:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 15 proven. 66 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:07:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:07:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554339380] [2024-11-09 08:07:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554339380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:07:59,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168672513] [2024-11-09 08:07:59,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:07:59,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:07:59,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:07:59,883 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) [2024-11-09 08:07:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 08:08:00,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 08:08:00,017 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:08:00,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 08:08:00,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-09 08:08:00,395 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:08:00,610 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 08:08:00,610 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 [2024-11-09 08:08:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 38 proven. 25 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-09 08:08:00,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168672513] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:08:00,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:08:00,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 13] total 33 [2024-11-09 08:08:00,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766829300] [2024-11-09 08:08:00,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:08:00,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-09 08:08:00,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-09 08:08:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=976, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 08:08:00,719 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) [2024-11-09 08:08:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:01,967 INFO L93 Difference]: Finished difference Result 434 states and 514 transitions. [2024-11-09 08:08:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 08:08:01,967 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 [2024-11-09 08:08:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:01,968 INFO L225 Difference]: With dead ends: 434 [2024-11-09 08:08:01,968 INFO L226 Difference]: Without dead ends: 434 [2024-11-09 08:08:01,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 08:08:01,969 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 498 mSDsluCounter, 3926 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 08:08:01,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 4088 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 08:08:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-09 08:08:01,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 200. [2024-11-09 08:08:01,973 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) [2024-11-09 08:08:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 230 transitions. [2024-11-09 08:08:01,974 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 230 transitions. Word has length 82 [2024-11-09 08:08:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:01,975 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 230 transitions. [2024-11-09 08:08:01,975 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) [2024-11-09 08:08:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 230 transitions. [2024-11-09 08:08:01,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-09 08:08:01,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:01,976 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] [2024-11-09 08:08:01,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 08:08:02,180 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 [2024-11-09 08:08:02,181 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)] === [2024-11-09 08:08:02,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:02,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1383026470, now seen corresponding path program 1 times [2024-11-09 08:08:02,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:02,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951576896] [2024-11-09 08:08:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:02,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 08:08:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:02,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951576896] [2024-11-09 08:08:02,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951576896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:08:02,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:08:02,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 08:08:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748797733] [2024-11-09 08:08:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:08:02,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 08:08:02,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 08:08:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 08:08:02,241 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) [2024-11-09 08:08:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:02,254 INFO L93 Difference]: Finished difference Result 202 states and 232 transitions. [2024-11-09 08:08:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 08:08:02,255 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 [2024-11-09 08:08:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:02,256 INFO L225 Difference]: With dead ends: 202 [2024-11-09 08:08:02,256 INFO L226 Difference]: Without dead ends: 202 [2024-11-09 08:08:02,256 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 [2024-11-09 08:08:02,257 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 [2024-11-09 08:08:02,257 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] [2024-11-09 08:08:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-09 08:08:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-09 08:08:02,260 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) [2024-11-09 08:08:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2024-11-09 08:08:02,260 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 82 [2024-11-09 08:08:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:02,261 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2024-11-09 08:08:02,261 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) [2024-11-09 08:08:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2024-11-09 08:08:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-09 08:08:02,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:02,262 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] [2024-11-09 08:08:02,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-09 08:08:02,262 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)] === [2024-11-09 08:08:02,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1994561461, now seen corresponding path program 1 times [2024-11-09 08:08:02,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:02,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892661886] [2024-11-09 08:08:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:02,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-09 08:08:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892661886] [2024-11-09 08:08:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892661886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:08:02,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 08:08:02,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 08:08:02,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478999162] [2024-11-09 08:08:02,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:08:02,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 08:08:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:02,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 08:08:02,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 08:08:02,344 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) [2024-11-09 08:08:02,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:02,378 INFO L93 Difference]: Finished difference Result 207 states and 236 transitions. [2024-11-09 08:08:02,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 08:08:02,378 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 [2024-11-09 08:08:02,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:02,379 INFO L225 Difference]: With dead ends: 207 [2024-11-09 08:08:02,379 INFO L226 Difference]: Without dead ends: 207 [2024-11-09 08:08:02,379 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 [2024-11-09 08:08:02,380 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 [2024-11-09 08:08:02,380 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] [2024-11-09 08:08:02,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-09 08:08:02,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 201. [2024-11-09 08:08:02,383 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) [2024-11-09 08:08:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 230 transitions. [2024-11-09 08:08:02,384 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 230 transitions. Word has length 84 [2024-11-09 08:08:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:02,384 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 230 transitions. [2024-11-09 08:08:02,384 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) [2024-11-09 08:08:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 230 transitions. [2024-11-09 08:08:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 08:08:02,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:02,385 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] [2024-11-09 08:08:02,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-09 08:08:02,386 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)] === [2024-11-09 08:08:02,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:02,386 INFO L85 PathProgramCache]: Analyzing trace with hash -24694026, now seen corresponding path program 1 times [2024-11-09 08:08:02,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:02,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863791954] [2024-11-09 08:08:02,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:02,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:02,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863791954] [2024-11-09 08:08:02,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863791954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:08:02,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433986786] [2024-11-09 08:08:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:02,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:08:02,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:08:02,547 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) [2024-11-09 08:08:02,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 08:08:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:02,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 08:08:02,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:02,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:08:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:03,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433986786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:08:03,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:08:03,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2024-11-09 08:08:03,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484275856] [2024-11-09 08:08:03,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:08:03,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 08:08:03,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:03,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 08:08:03,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-09 08:08:03,011 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) [2024-11-09 08:08:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:03,336 INFO L93 Difference]: Finished difference Result 351 states and 406 transitions. [2024-11-09 08:08:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 08:08:03,337 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 [2024-11-09 08:08:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:03,338 INFO L225 Difference]: With dead ends: 351 [2024-11-09 08:08:03,338 INFO L226 Difference]: Without dead ends: 258 [2024-11-09 08:08:03,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2024-11-09 08:08:03,339 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 170 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 08:08:03,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 533 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 08:08:03,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-09 08:08:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 248. [2024-11-09 08:08:03,342 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) [2024-11-09 08:08:03,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 282 transitions. [2024-11-09 08:08:03,343 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 282 transitions. Word has length 86 [2024-11-09 08:08:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:03,343 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 282 transitions. [2024-11-09 08:08:03,343 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) [2024-11-09 08:08:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 282 transitions. [2024-11-09 08:08:03,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-09 08:08:03,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:03,344 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] [2024-11-09 08:08:03,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 08:08:03,548 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 [2024-11-09 08:08:03,549 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)] === [2024-11-09 08:08:03,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1750313336, now seen corresponding path program 1 times [2024-11-09 08:08:03,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:03,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918623986] [2024-11-09 08:08:03,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:03,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:03,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:03,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918623986] [2024-11-09 08:08:03,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918623986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:08:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906370751] [2024-11-09 08:08:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:03,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:08:03,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:08:03,866 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) [2024-11-09 08:08:03,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 08:08:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:04,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 08:08:04,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:04,029 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 [2024-11-09 08:08:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:04,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:08:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:04,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906370751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:08:04,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:08:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-09 08:08:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109394553] [2024-11-09 08:08:04,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:08:04,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 08:08:04,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 08:08:04,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2024-11-09 08:08:04,924 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) [2024-11-09 08:08:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:05,160 INFO L93 Difference]: Finished difference Result 254 states and 287 transitions. [2024-11-09 08:08:05,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 08:08:05,160 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 [2024-11-09 08:08:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:05,161 INFO L225 Difference]: With dead ends: 254 [2024-11-09 08:08:05,161 INFO L226 Difference]: Without dead ends: 229 [2024-11-09 08:08:05,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2024-11-09 08:08:05,162 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 08:08:05,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 458 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 08:08:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-09 08:08:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2024-11-09 08:08:05,165 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) [2024-11-09 08:08:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2024-11-09 08:08:05,165 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 86 [2024-11-09 08:08:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:05,166 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2024-11-09 08:08:05,166 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) [2024-11-09 08:08:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2024-11-09 08:08:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-09 08:08:05,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:05,167 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] [2024-11-09 08:08:05,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 08:08:05,367 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 [2024-11-09 08:08:05,368 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)] === [2024-11-09 08:08:05,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1166788564, now seen corresponding path program 2 times [2024-11-09 08:08:05,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:05,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112395118] [2024-11-09 08:08:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:05,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 15 proven. 91 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:05,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112395118] [2024-11-09 08:08:05,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112395118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:08:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588474710] [2024-11-09 08:08:05,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:08:05,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:08:05,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:08:05,797 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) [2024-11-09 08:08:05,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 08:08:05,949 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 08:08:05,949 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:08:05,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 08:08:05,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 08:08:06,384 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:08:06,574 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-11-09 08:08:06,575 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 [2024-11-09 08:08:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-09 08:08:06,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588474710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:08:06,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:08:06,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 34 [2024-11-09 08:08:06,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935216394] [2024-11-09 08:08:06,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:08:06,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 08:08:06,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:06,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 08:08:06,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 08:08:06,706 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) [2024-11-09 08:08:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:08,047 INFO L93 Difference]: Finished difference Result 390 states and 448 transitions. [2024-11-09 08:08:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 08:08:08,048 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 [2024-11-09 08:08:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:08,049 INFO L225 Difference]: With dead ends: 390 [2024-11-09 08:08:08,049 INFO L226 Difference]: Without dead ends: 372 [2024-11-09 08:08:08,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 08:08:08,051 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 250 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 3063 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 08:08:08,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 4757 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3063 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 08:08:08,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-09 08:08:08,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 191. [2024-11-09 08:08:08,055 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) [2024-11-09 08:08:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 217 transitions. [2024-11-09 08:08:08,056 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 217 transitions. Word has length 88 [2024-11-09 08:08:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:08,056 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 217 transitions. [2024-11-09 08:08:08,056 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) [2024-11-09 08:08:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 217 transitions. [2024-11-09 08:08:08,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 08:08:08,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:08,057 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] [2024-11-09 08:08:08,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 08:08:08,258 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 [2024-11-09 08:08:08,258 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)] === [2024-11-09 08:08:08,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:08,259 INFO L85 PathProgramCache]: Analyzing trace with hash -733072209, now seen corresponding path program 2 times [2024-11-09 08:08:08,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:08,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892816772] [2024-11-09 08:08:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:08,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:08,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:08,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892816772] [2024-11-09 08:08:08,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892816772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:08:08,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733099407] [2024-11-09 08:08:08,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 08:08:08,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:08:08,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:08:08,572 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) [2024-11-09 08:08:08,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 08:08:08,714 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 08:08:08,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:08:08,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 08:08:08,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:08,728 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 [2024-11-09 08:08:08,915 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-09 08:08:08,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 08:08:08,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733099407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 08:08:08,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 08:08:08,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2024-11-09 08:08:08,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477044189] [2024-11-09 08:08:08,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 08:08:08,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 08:08:08,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:08,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 08:08:08,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-09 08:08:08,917 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) [2024-11-09 08:08:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:08,955 INFO L93 Difference]: Finished difference Result 190 states and 216 transitions. [2024-11-09 08:08:08,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 08:08:08,955 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 [2024-11-09 08:08:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:08,956 INFO L225 Difference]: With dead ends: 190 [2024-11-09 08:08:08,956 INFO L226 Difference]: Without dead ends: 163 [2024-11-09 08:08:08,956 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 [2024-11-09 08:08:08,957 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 [2024-11-09 08:08:08,957 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] [2024-11-09 08:08:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-09 08:08:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2024-11-09 08:08:08,959 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) [2024-11-09 08:08:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2024-11-09 08:08:08,960 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 93 [2024-11-09 08:08:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:08,960 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2024-11-09 08:08:08,960 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) [2024-11-09 08:08:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2024-11-09 08:08:08,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 08:08:08,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:08,961 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] [2024-11-09 08:08:08,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 08:08:09,161 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 [2024-11-09 08:08:09,162 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)] === [2024-11-09 08:08:09,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash -585360551, now seen corresponding path program 3 times [2024-11-09 08:08:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269341880] [2024-11-09 08:08:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:09,711 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 15 proven. 120 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-09 08:08:09,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269341880] [2024-11-09 08:08:09,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269341880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:08:09,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895942016] [2024-11-09 08:08:09,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 08:08:09,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:08:09,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:08:09,714 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) [2024-11-09 08:08:09,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 08:08:09,853 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 08:08:09,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:08:09,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 08:08:09,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:09,863 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 [2024-11-09 08:08:09,867 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 [2024-11-09 08:08:10,052 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 [2024-11-09 08:08:10,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 08:08:10,081 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 [2024-11-09 08:08:10,090 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 08:08:10,090 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 [2024-11-09 08:08:10,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 08:08:10,276 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 [2024-11-09 08:08:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-09 08:08:10,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:08:10,790 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 [2024-11-09 08:08:10,795 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 [2024-11-09 08:08:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-09 08:08:11,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895942016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:08:11,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:08:11,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2024-11-09 08:08:11,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667729373] [2024-11-09 08:08:11,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:08:11,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 08:08:11,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:11,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 08:08:11,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2024-11-09 08:08:11,192 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) [2024-11-09 08:08:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:11,859 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2024-11-09 08:08:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 08:08:11,860 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 [2024-11-09 08:08:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:11,861 INFO L225 Difference]: With dead ends: 174 [2024-11-09 08:08:11,861 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 08:08:11,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=1799, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 08:08:11,862 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 392 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 08:08:11,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 519 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 08:08:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 08:08:11,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 165. [2024-11-09 08:08:11,864 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) [2024-11-09 08:08:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 181 transitions. [2024-11-09 08:08:11,865 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 181 transitions. Word has length 97 [2024-11-09 08:08:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:11,865 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 181 transitions. [2024-11-09 08:08:11,865 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) [2024-11-09 08:08:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 181 transitions. [2024-11-09 08:08:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 08:08:11,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:11,866 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] [2024-11-09 08:08:11,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 08:08:12,066 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 [2024-11-09 08:08:12,067 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)] === [2024-11-09 08:08:12,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 797369199, now seen corresponding path program 3 times [2024-11-09 08:08:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:12,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83023379] [2024-11-09 08:08:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 9 proven. 144 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-09 08:08:12,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83023379] [2024-11-09 08:08:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83023379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:08:12,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460516295] [2024-11-09 08:08:12,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 08:08:12,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:08:12,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:08:12,781 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) [2024-11-09 08:08:12,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 08:08:12,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 08:08:12,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:08:12,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 08:08:12,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:12,932 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 [2024-11-09 08:08:12,935 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 [2024-11-09 08:08:13,103 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 [2024-11-09 08:08:13,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 08:08:13,131 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 [2024-11-09 08:08:13,138 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 08:08:13,138 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 [2024-11-09 08:08:13,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 08:08:13,336 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 [2024-11-09 08:08:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-09 08:08:13,452 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:08:13,822 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 [2024-11-09 08:08:13,826 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 [2024-11-09 08:08:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-09 08:08:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460516295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:08:14,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:08:14,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7, 7] total 27 [2024-11-09 08:08:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323953962] [2024-11-09 08:08:14,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:08:14,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 08:08:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:14,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 08:08:14,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2024-11-09 08:08:14,153 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) [2024-11-09 08:08:16,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:16,193 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-11-09 08:08:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-09 08:08:16,194 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 [2024-11-09 08:08:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:16,195 INFO L225 Difference]: With dead ends: 214 [2024-11-09 08:08:16,195 INFO L226 Difference]: Without dead ends: 105 [2024-11-09 08:08:16,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=691, Invalid=5789, Unknown=0, NotChecked=0, Total=6480 [2024-11-09 08:08:16,197 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 252 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 08:08:16,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 824 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 08:08:16,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-09 08:08:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-09 08:08:16,199 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) [2024-11-09 08:08:16,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-11-09 08:08:16,200 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 103 [2024-11-09 08:08:16,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:16,200 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-11-09 08:08:16,200 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) [2024-11-09 08:08:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-11-09 08:08:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-09 08:08:16,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 08:08:16,201 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 08:08:16,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 08:08:16,402 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 [2024-11-09 08:08:16,402 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)] === [2024-11-09 08:08:16,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 08:08:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -53143843, now seen corresponding path program 3 times [2024-11-09 08:08:16,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 08:08:16,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210443378] [2024-11-09 08:08:16,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 08:08:16,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 08:08:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 08:08:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 18 proven. 252 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 08:08:16,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 08:08:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210443378] [2024-11-09 08:08:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210443378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 08:08:16,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407068141] [2024-11-09 08:08:16,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 08:08:16,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 08:08:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 08:08:16,935 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) [2024-11-09 08:08:16,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 08:08:17,080 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 08:08:17,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 08:08:17,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 08:08:17,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 08:08:17,087 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 [2024-11-09 08:08:17,093 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 [2024-11-09 08:08:17,276 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 [2024-11-09 08:08:17,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 08:08:17,308 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 [2024-11-09 08:08:17,316 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 08:08:17,317 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 [2024-11-09 08:08:17,640 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2024-11-09 08:08:17,640 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 18 treesize of output 14 [2024-11-09 08:08:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 32 proven. 26 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-09 08:08:17,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 08:08:18,059 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 [2024-11-09 08:08:18,063 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 [2024-11-09 08:08:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-09 08:08:18,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407068141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 08:08:18,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 08:08:18,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 30 [2024-11-09 08:08:18,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740398484] [2024-11-09 08:08:18,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 08:08:18,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 08:08:18,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 08:08:18,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 08:08:18,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2024-11-09 08:08:18,388 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 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) [2024-11-09 08:08:19,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 08:08:19,741 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2024-11-09 08:08:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 08:08:19,742 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 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 [2024-11-09 08:08:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 08:08:19,742 INFO L225 Difference]: With dead ends: 99 [2024-11-09 08:08:19,742 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 08:08:19,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=515, Invalid=3907, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 08:08:19,743 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 185 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 08:08:19,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 343 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 08:08:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 08:08:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 08:08:19,744 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) [2024-11-09 08:08:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 08:08:19,744 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 104 [2024-11-09 08:08:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 08:08:19,744 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 08:08:19,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.2) internal successors, (126), 30 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) [2024-11-09 08:08:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 08:08:19,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 08:08:19,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 24 remaining) [2024-11-09 08:08:19,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2024-11-09 08:08:19,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2024-11-09 08:08:19,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2024-11-09 08:08:19,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2024-11-09 08:08:19,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2024-11-09 08:08:19,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK (5 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 24 remaining) [2024-11-09 08:08:19,750 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 24 remaining) [2024-11-09 08:08:19,751 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 24 remaining) [2024-11-09 08:08:19,751 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2024-11-09 08:08:19,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 08:08:19,954 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 [2024-11-09 08:08:19,957 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] [2024-11-09 08:08:19,959 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 08:08:19,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:08:19 BoogieIcfgContainer [2024-11-09 08:08:19,966 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 08:08:19,967 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 08:08:19,967 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 08:08:19,967 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 08:08:19,967 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:07:35" (3/4) ... [2024-11-09 08:08:19,969 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 08:08:19,981 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-09 08:08:19,981 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-09 08:08:19,982 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 08:08:19,984 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 08:08:20,097 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 08:08:20,098 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 08:08:20,098 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 08:08:20,099 INFO L158 Benchmark]: Toolchain (without parser) took 45179.38ms. Allocated memory was 157.3MB in the beginning and 541.1MB in the end (delta: 383.8MB). Free memory was 84.3MB in the beginning and 483.5MB in the end (delta: -399.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 08:08:20,099 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory was 110.4MB in the beginning and 110.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 08:08:20,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.30ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 127.9MB in the end (delta: -43.8MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2024-11-09 08:08:20,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.07ms. Allocated memory is still 157.3MB. Free memory was 127.9MB in the beginning and 125.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 08:08:20,099 INFO L158 Benchmark]: Boogie Preprocessor took 57.49ms. Allocated memory is still 157.3MB. Free memory was 125.8MB in the beginning and 123.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 08:08:20,099 INFO L158 Benchmark]: RCFGBuilder took 539.84ms. Allocated memory is still 157.3MB. Free memory was 123.4MB in the beginning and 102.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-09 08:08:20,099 INFO L158 Benchmark]: TraceAbstraction took 43989.80ms. Allocated memory was 157.3MB in the beginning and 541.1MB in the end (delta: 383.8MB). Free memory was 101.5MB in the beginning and 489.7MB in the end (delta: -388.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 08:08:20,099 INFO L158 Benchmark]: Witness Printer took 131.57ms. Allocated memory is still 541.1MB. Free memory was 489.7MB in the beginning and 483.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 08:08:20,100 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory was 110.4MB in the beginning and 110.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 414.30ms. Allocated memory is still 157.3MB. Free memory was 84.1MB in the beginning and 127.9MB in the end (delta: -43.8MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.07ms. Allocated memory is still 157.3MB. Free memory was 127.9MB in the beginning and 125.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.49ms. Allocated memory is still 157.3MB. Free memory was 125.8MB in the beginning and 123.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 539.84ms. Allocated memory is still 157.3MB. Free memory was 123.4MB in the beginning and 102.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 43989.80ms. Allocated memory was 157.3MB in the beginning and 541.1MB in the end (delta: 383.8MB). Free memory was 101.5MB in the beginning and 489.7MB in the end (delta: -388.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 131.57ms. Allocated memory is still 541.1MB. Free memory was 489.7MB in the beginning and 483.5MB in the end (delta: 6.3MB). 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: 43.9s, OverallIterations: 41, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6274 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6274 mSDsluCounter, 29759 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26417 mSDsCounter, 178 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19616 IncrementalHoareTripleChecker+Invalid, 19794 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 178 mSolverCounterUnsat, 3342 mSDtfsCounter, 19616 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3029 GetRequests, 2346 SyntacticMatches, 14 SemanticMatches, 669 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4194 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1191occurred in iteration=30, InterpolantAutomatonStates: 459, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 41 MinimizatonAttempts, 3325 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 20.5s InterpolantComputationTime, 3881 NumberOfCodeBlocks, 3545 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 4879 ConstructedInterpolants, 181 QuantifiedInterpolants, 40917 SizeOfPredicates, 92 NumberOfNonLiveVariables, 4656 ConjunctsInSsa, 408 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! [2024-11-09 08:08:20,142 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