./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext2/length_test03-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc 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/memsafety-ext2/length_test03-1.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 6e9221de91e231efa38b63f264828813e89f68c8ac306a629b3513c0e7bf1ed0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:44:12,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:44:12,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:44:12,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:44:12,871 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:44:12,902 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:44:12,902 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:44:12,903 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:44:12,903 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:44:12,904 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:44:12,904 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:44:12,905 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:44:12,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:44:12,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:44:12,906 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:44:12,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:44:12,909 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:44:12,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:44:12,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:44:12,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:44:12,910 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:44:12,911 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:44:12,911 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:44:12,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:44:12,911 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:44:12,912 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:44:12,912 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:44:12,912 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:44:12,912 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:44:12,913 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:44:12,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:44:12,913 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:44:12,914 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:44:12,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:44:12,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:44:12,916 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:44:12,917 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:44:12,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:44:12,917 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:44:12,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:44:12,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:44:12,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:44:12,919 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e9221de91e231efa38b63f264828813e89f68c8ac306a629b3513c0e7bf1ed0 [2024-11-19 06:44:13,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:44:13,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:44:13,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:44:13,218 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:44:13,219 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:44:13,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/length_test03-1.i [2024-11-19 06:44:14,726 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:44:14,965 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:44:14,965 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/length_test03-1.i [2024-11-19 06:44:14,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca89ed76/5deda2f57ae149529f78ea82a57a42a0/FLAGa754bf140 [2024-11-19 06:44:14,997 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ca89ed76/5deda2f57ae149529f78ea82a57a42a0 [2024-11-19 06:44:15,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:44:15,001 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:44:15,002 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:44:15,002 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:44:15,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:44:15,007 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:44:14" (1/1) ... [2024-11-19 06:44:15,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540a214d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15, skipping insertion in model container [2024-11-19 06:44:15,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:44:14" (1/1) ... [2024-11-19 06:44:15,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:44:15,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:44:15,431 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:44:15,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:44:15,523 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:44:15,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15 WrapperNode [2024-11-19 06:44:15,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:44:15,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:44:15,526 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:44:15,526 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:44:15,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,580 INFO L138 Inliner]: procedures = 123, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 102 [2024-11-19 06:44:15,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:44:15,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:44:15,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:44:15,583 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:44:15,593 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,597 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,619 INFO L175 MemorySlicer]: Split 25 memory accesses to 3 slices as follows [2, 13, 10]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 13 writes are split as follows [0, 7, 6]. [2024-11-19 06:44:15,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,620 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:44:15,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:44:15,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:44:15,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:44:15,642 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (1/1) ... [2024-11-19 06:44:15,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:44:15,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:15,685 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) [2024-11-19 06:44:15,690 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 [2024-11-19 06:44:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:44:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:44:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 06:44:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:44:15,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 06:44:15,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 06:44:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:44:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:44:15,761 INFO L130 BoogieDeclarations]: Found specification of procedure append [2024-11-19 06:44:15,761 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2024-11-19 06:44:15,856 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:44:15,858 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:44:16,242 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-11-19 06:44:16,242 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:44:16,263 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:44:16,263 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-19 06:44:16,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:44:16 BoogieIcfgContainer [2024-11-19 06:44:16,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:44:16,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:44:16,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:44:16,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:44:16,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:44:14" (1/3) ... [2024-11-19 06:44:16,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332fa352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:44:16, skipping insertion in model container [2024-11-19 06:44:16,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:44:15" (2/3) ... [2024-11-19 06:44:16,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332fa352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:44:16, skipping insertion in model container [2024-11-19 06:44:16,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:44:16" (3/3) ... [2024-11-19 06:44:16,275 INFO L112 eAbstractionObserver]: Analyzing ICFG length_test03-1.i [2024-11-19 06:44:16,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:44:16,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2024-11-19 06:44:16,354 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:44:16,360 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;@72b72718, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:44:16,360 INFO L334 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2024-11-19 06:44:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 67 states have (on average 2.029850746268657) internal successors, (136), 126 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:16,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-19 06:44:16,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:16,370 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-19 06:44:16,373 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:16,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2024-11-19 06:44:16,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:16,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506563469] [2024-11-19 06:44:16,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:16,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506563469] [2024-11-19 06:44:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506563469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:16,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:44:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724737064] [2024-11-19 06:44:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:16,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:16,676 INFO L87 Difference]: Start difference. First operand has 130 states, 67 states have (on average 2.029850746268657) internal successors, (136), 126 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:16,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:16,862 INFO L93 Difference]: Finished difference Result 167 states and 176 transitions. [2024-11-19 06:44:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:16,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-19 06:44:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:16,876 INFO L225 Difference]: With dead ends: 167 [2024-11-19 06:44:16,877 INFO L226 Difference]: Without dead ends: 165 [2024-11-19 06:44:16,879 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 [2024-11-19 06:44:16,883 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 51 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:16,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 172 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:44:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-19 06:44:16,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 126. [2024-11-19 06:44:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 122 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2024-11-19 06:44:16,941 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 3 [2024-11-19 06:44:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:16,942 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2024-11-19 06:44:16,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2024-11-19 06:44:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-19 06:44:16,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:16,943 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-19 06:44:16,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:44:16,944 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:16,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:16,945 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-19 06:44:16,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544861896] [2024-11-19 06:44:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:16,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:17,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:17,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544861896] [2024-11-19 06:44:17,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544861896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:17,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:17,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:44:17,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030879195] [2024-11-19 06:44:17,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:17,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:17,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:17,069 INFO L87 Difference]: Start difference. First operand 126 states and 132 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:17,186 INFO L93 Difference]: Finished difference Result 126 states and 133 transitions. [2024-11-19 06:44:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:17,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-19 06:44:17,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:17,189 INFO L225 Difference]: With dead ends: 126 [2024-11-19 06:44:17,189 INFO L226 Difference]: Without dead ends: 126 [2024-11-19 06:44:17,189 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 [2024-11-19 06:44:17,190 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 10 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:17,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 193 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:44:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-19 06:44:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2024-11-19 06:44:17,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 120 states have internal predecessors, (126), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 130 transitions. [2024-11-19 06:44:17,200 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 130 transitions. Word has length 3 [2024-11-19 06:44:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:17,201 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 130 transitions. [2024-11-19 06:44:17,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,201 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 130 transitions. [2024-11-19 06:44:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:44:17,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:17,202 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:44:17,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:44:17,203 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:17,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:17,203 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2024-11-19 06:44:17,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:17,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752669379] [2024-11-19 06:44:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:17,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:17,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:17,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752669379] [2024-11-19 06:44:17,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752669379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:17,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:17,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:44:17,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762281172] [2024-11-19 06:44:17,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:17,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:17,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:17,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:17,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:17,309 INFO L87 Difference]: Start difference. First operand 124 states and 130 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:17,425 INFO L93 Difference]: Finished difference Result 140 states and 149 transitions. [2024-11-19 06:44:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:17,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-19 06:44:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:17,427 INFO L225 Difference]: With dead ends: 140 [2024-11-19 06:44:17,427 INFO L226 Difference]: Without dead ends: 140 [2024-11-19 06:44:17,428 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 [2024-11-19 06:44:17,429 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 24 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:17,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 177 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:44:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-19 06:44:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 127. [2024-11-19 06:44:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 71 states have (on average 1.8591549295774648) internal successors, (132), 123 states have internal predecessors, (132), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 136 transitions. [2024-11-19 06:44:17,448 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 136 transitions. Word has length 6 [2024-11-19 06:44:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:17,449 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 136 transitions. [2024-11-19 06:44:17,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 136 transitions. [2024-11-19 06:44:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-19 06:44:17,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:17,450 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 06:44:17,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:44:17,451 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:17,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:17,452 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2024-11-19 06:44:17,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:17,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797025346] [2024-11-19 06:44:17,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:17,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:17,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:17,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797025346] [2024-11-19 06:44:17,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797025346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:17,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:17,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:44:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078652758] [2024-11-19 06:44:17,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:17,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:17,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:17,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:17,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:17,615 INFO L87 Difference]: Start difference. First operand 127 states and 136 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:17,706 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2024-11-19 06:44:17,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:17,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-19 06:44:17,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:17,708 INFO L225 Difference]: With dead ends: 127 [2024-11-19 06:44:17,708 INFO L226 Difference]: Without dead ends: 127 [2024-11-19 06:44:17,708 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 [2024-11-19 06:44:17,710 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:17,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 194 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:44:17,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-19 06:44:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-19 06:44:17,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 71 states have (on average 1.8309859154929577) internal successors, (130), 121 states have internal predecessors, (130), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 134 transitions. [2024-11-19 06:44:17,728 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 134 transitions. Word has length 6 [2024-11-19 06:44:17,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:17,728 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 134 transitions. [2024-11-19 06:44:17,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,729 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 134 transitions. [2024-11-19 06:44:17,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:44:17,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:17,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:17,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:44:17,730 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting appendErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:17,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1036552302, now seen corresponding path program 1 times [2024-11-19 06:44:17,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:17,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529486207] [2024-11-19 06:44:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:17,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529486207] [2024-11-19 06:44:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529486207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:17,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:17,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:44:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779215905] [2024-11-19 06:44:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:17,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:17,872 INFO L87 Difference]: Start difference. First operand 125 states and 134 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:17,954 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2024-11-19 06:44:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:17,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 06:44:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:17,956 INFO L225 Difference]: With dead ends: 120 [2024-11-19 06:44:17,956 INFO L226 Difference]: Without dead ends: 120 [2024-11-19 06:44:17,957 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 [2024-11-19 06:44:17,958 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 35 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:17,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 145 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:44:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-19 06:44:17,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-19 06:44:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 71 states have (on average 1.7605633802816902) internal successors, (125), 116 states have internal predecessors, (125), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2024-11-19 06:44:17,972 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 12 [2024-11-19 06:44:17,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:17,973 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2024-11-19 06:44:17,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2024-11-19 06:44:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:44:17,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:17,974 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:17,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:44:17,975 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting appendErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:17,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:17,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1036552303, now seen corresponding path program 1 times [2024-11-19 06:44:17,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:17,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775059049] [2024-11-19 06:44:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:17,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:18,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:18,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775059049] [2024-11-19 06:44:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775059049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:18,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:18,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:44:18,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369295294] [2024-11-19 06:44:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:18,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:18,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:18,074 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:18,134 INFO L93 Difference]: Finished difference Result 115 states and 124 transitions. [2024-11-19 06:44:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:18,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 06:44:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:18,137 INFO L225 Difference]: With dead ends: 115 [2024-11-19 06:44:18,138 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 06:44:18,138 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 [2024-11-19 06:44:18,139 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:18,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 154 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:44:18,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 06:44:18,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-19 06:44:18,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 71 states have (on average 1.6901408450704225) internal successors, (120), 111 states have internal predecessors, (120), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 124 transitions. [2024-11-19 06:44:18,150 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 124 transitions. Word has length 12 [2024-11-19 06:44:18,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:18,150 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 124 transitions. [2024-11-19 06:44:18,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:18,150 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 124 transitions. [2024-11-19 06:44:18,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:44:18,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:18,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:18,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:44:18,151 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:18,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2068350391, now seen corresponding path program 1 times [2024-11-19 06:44:18,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:18,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373451800] [2024-11-19 06:44:18,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:18,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:18,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373451800] [2024-11-19 06:44:18,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373451800] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:18,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:18,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:44:18,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962775386] [2024-11-19 06:44:18,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:18,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:44:18,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:18,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:44:18,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:44:18,431 INFO L87 Difference]: Start difference. First operand 115 states and 124 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:18,667 INFO L93 Difference]: Finished difference Result 221 states and 242 transitions. [2024-11-19 06:44:18,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:44:18,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:44:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:18,669 INFO L225 Difference]: With dead ends: 221 [2024-11-19 06:44:18,669 INFO L226 Difference]: Without dead ends: 221 [2024-11-19 06:44:18,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:44:18,670 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 240 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:18,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 220 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:44:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-19 06:44:18,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 149. [2024-11-19 06:44:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 110 states have (on average 1.6181818181818182) internal successors, (178), 144 states have internal predecessors, (178), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 182 transitions. [2024-11-19 06:44:18,683 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 182 transitions. Word has length 13 [2024-11-19 06:44:18,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:18,684 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 182 transitions. [2024-11-19 06:44:18,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:18,684 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 182 transitions. [2024-11-19 06:44:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-19 06:44:18,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:18,685 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:18,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:44:18,685 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:18,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2068350392, now seen corresponding path program 1 times [2024-11-19 06:44:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389878927] [2024-11-19 06:44:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:18,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:18,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389878927] [2024-11-19 06:44:18,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389878927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:18,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:18,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:44:18,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927318442] [2024-11-19 06:44:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:18,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:44:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:18,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:44:18,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:44:18,995 INFO L87 Difference]: Start difference. First operand 149 states and 182 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:19,187 INFO L93 Difference]: Finished difference Result 171 states and 207 transitions. [2024-11-19 06:44:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:44:19,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-19 06:44:19,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:19,188 INFO L225 Difference]: With dead ends: 171 [2024-11-19 06:44:19,188 INFO L226 Difference]: Without dead ends: 171 [2024-11-19 06:44:19,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:44:19,189 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 25 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:19,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 330 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:44:19,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-19 06:44:19,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2024-11-19 06:44:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 129 states have (on average 1.558139534883721) internal successors, (201), 163 states have internal predecessors, (201), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:44:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 207 transitions. [2024-11-19 06:44:19,196 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 207 transitions. Word has length 13 [2024-11-19 06:44:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:19,197 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 207 transitions. [2024-11-19 06:44:19,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 207 transitions. [2024-11-19 06:44:19,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-19 06:44:19,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:19,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:19,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:44:19,198 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:19,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1480883050, now seen corresponding path program 1 times [2024-11-19 06:44:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959943237] [2024-11-19 06:44:19,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:19,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:19,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:19,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:19,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959943237] [2024-11-19 06:44:19,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959943237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:19,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:19,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:44:19,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930208508] [2024-11-19 06:44:19,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:19,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:44:19,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:19,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:44:19,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:44:19,669 INFO L87 Difference]: Start difference. First operand 169 states and 207 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:19,899 INFO L93 Difference]: Finished difference Result 171 states and 206 transitions. [2024-11-19 06:44:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:44:19,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-19 06:44:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:19,902 INFO L225 Difference]: With dead ends: 171 [2024-11-19 06:44:19,902 INFO L226 Difference]: Without dead ends: 171 [2024-11-19 06:44:19,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:44:19,903 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 38 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:19,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 676 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:44:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-19 06:44:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2024-11-19 06:44:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 129 states have (on average 1.550387596899225) internal successors, (200), 163 states have internal predecessors, (200), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:44:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 206 transitions. [2024-11-19 06:44:19,912 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 206 transitions. Word has length 22 [2024-11-19 06:44:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:19,913 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 206 transitions. [2024-11-19 06:44:19,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:19,913 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 206 transitions. [2024-11-19 06:44:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 06:44:19,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:19,914 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:19,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:44:19,915 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:19,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -439263795, now seen corresponding path program 1 times [2024-11-19 06:44:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:19,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4532670] [2024-11-19 06:44:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:20,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:20,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4532670] [2024-11-19 06:44:20,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4532670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:20,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:20,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 06:44:20,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505599700] [2024-11-19 06:44:20,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:20,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:44:20,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:20,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:44:20,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:44:20,435 INFO L87 Difference]: Start difference. First operand 169 states and 206 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:20,744 INFO L93 Difference]: Finished difference Result 196 states and 231 transitions. [2024-11-19 06:44:20,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:44:20,744 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-19 06:44:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:20,746 INFO L225 Difference]: With dead ends: 196 [2024-11-19 06:44:20,746 INFO L226 Difference]: Without dead ends: 196 [2024-11-19 06:44:20,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:44:20,747 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 113 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:20,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 509 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:44:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-19 06:44:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2024-11-19 06:44:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 121 states have (on average 1.5454545454545454) internal successors, (187), 154 states have internal predecessors, (187), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:44:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 193 transitions. [2024-11-19 06:44:20,753 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 193 transitions. Word has length 24 [2024-11-19 06:44:20,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:20,754 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 193 transitions. [2024-11-19 06:44:20,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:44:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 193 transitions. [2024-11-19 06:44:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 06:44:20,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:20,755 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:20,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:44:20,756 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:20,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1442887251, now seen corresponding path program 1 times [2024-11-19 06:44:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173236568] [2024-11-19 06:44:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:20,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:20,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173236568] [2024-11-19 06:44:20,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173236568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:20,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:20,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:44:20,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110299593] [2024-11-19 06:44:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:20,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:20,850 INFO L87 Difference]: Start difference. First operand 160 states and 193 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:44:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:20,866 INFO L93 Difference]: Finished difference Result 153 states and 171 transitions. [2024-11-19 06:44:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:20,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-11-19 06:44:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:20,867 INFO L225 Difference]: With dead ends: 153 [2024-11-19 06:44:20,867 INFO L226 Difference]: Without dead ends: 153 [2024-11-19 06:44:20,868 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 [2024-11-19 06:44:20,868 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 13 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:20,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 205 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:44:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-19 06:44:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 139. [2024-11-19 06:44:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 100 states have (on average 1.5) internal successors, (150), 133 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:44:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 156 transitions. [2024-11-19 06:44:20,873 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 156 transitions. Word has length 30 [2024-11-19 06:44:20,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:20,873 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 156 transitions. [2024-11-19 06:44:20,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:44:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 156 transitions. [2024-11-19 06:44:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 06:44:20,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:20,875 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:20,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 06:44:20,875 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:20,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash -610198618, now seen corresponding path program 1 times [2024-11-19 06:44:20,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:20,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678554295] [2024-11-19 06:44:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:20,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:21,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:21,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:21,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678554295] [2024-11-19 06:44:21,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678554295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:21,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146934347] [2024-11-19 06:44:21,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:21,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:21,354 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) [2024-11-19 06:44:21,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:44:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:21,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 06:44:21,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:21,717 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:44:21,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-19 06:44:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:21,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:22,093 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 37 treesize of output 33 [2024-11-19 06:44:22,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:44:22,467 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 32 treesize of output 34 [2024-11-19 06:44:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:22,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146934347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:22,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:22,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20 [2024-11-19 06:44:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235691761] [2024-11-19 06:44:22,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:22,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:44:22,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:44:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:44:22,610 INFO L87 Difference]: Start difference. First operand 139 states and 156 transitions. Second operand has 21 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 06:44:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:23,339 INFO L93 Difference]: Finished difference Result 143 states and 153 transitions. [2024-11-19 06:44:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:44:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-19 06:44:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:23,341 INFO L225 Difference]: With dead ends: 143 [2024-11-19 06:44:23,341 INFO L226 Difference]: Without dead ends: 143 [2024-11-19 06:44:23,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-11-19 06:44:23,342 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 300 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:23,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 664 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:44:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-19 06:44:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 138. [2024-11-19 06:44:23,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 102 states have (on average 1.4019607843137254) internal successors, (143), 132 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:44:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2024-11-19 06:44:23,348 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 32 [2024-11-19 06:44:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:23,348 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2024-11-19 06:44:23,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 18 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 06:44:23,349 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2024-11-19 06:44:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:44:23,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:23,352 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 06:44:23,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:44:23,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-19 06:44:23,553 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting appendErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:23,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1027331565, now seen corresponding path program 1 times [2024-11-19 06:44:23,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:23,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072560533] [2024-11-19 06:44:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:23,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072560533] [2024-11-19 06:44:23,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072560533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969803241] [2024-11-19 06:44:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:23,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:23,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:23,825 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) [2024-11-19 06:44:23,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:44:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:23,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 06:44:23,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:24,000 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 [2024-11-19 06:44:24,020 WARN L873 $PredicateComparison]: unable to prove that (exists ((append_~node~0.base Int)) (and (= (select |c_old(#valid)| append_~node~0.base) 0) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base (select |c_#valid| append_~node~0.base))))) is different from true [2024-11-19 06:44:24,106 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 06:44:24,107 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 [2024-11-19 06:44:24,135 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:44:24,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-19 06:44:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-19 06:44:24,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:24,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969803241] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:24,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:44:24,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2024-11-19 06:44:24,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475870000] [2024-11-19 06:44:24,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:24,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:44:24,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:24,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:44:24,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2024-11-19 06:44:24,226 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:44:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:24,655 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2024-11-19 06:44:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 06:44:24,656 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-11-19 06:44:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:24,657 INFO L225 Difference]: With dead ends: 168 [2024-11-19 06:44:24,657 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 06:44:24,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=250, Unknown=1, NotChecked=34, Total=380 [2024-11-19 06:44:24,658 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 101 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:24,659 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 413 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 385 Invalid, 0 Unknown, 142 Unchecked, 0.3s Time] [2024-11-19 06:44:24,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 06:44:24,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 141. [2024-11-19 06:44:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 105 states have (on average 1.4) internal successors, (147), 135 states have internal predecessors, (147), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:44:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2024-11-19 06:44:24,663 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 33 [2024-11-19 06:44:24,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:24,663 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2024-11-19 06:44:24,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:44:24,664 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2024-11-19 06:44:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:44:24,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:24,665 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-19 06:44:24,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 06:44:24,869 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,SelfDestructingSolverStorable12 [2024-11-19 06:44:24,870 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:24,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:24,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1027331566, now seen corresponding path program 1 times [2024-11-19 06:44:24,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:24,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3534918] [2024-11-19 06:44:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:24,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:25,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:25,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3534918] [2024-11-19 06:44:25,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3534918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:25,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576635174] [2024-11-19 06:44:25,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:25,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:25,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:25,293 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) [2024-11-19 06:44:25,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:44:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:25,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 06:44:25,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:25,451 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 [2024-11-19 06:44:25,458 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 [2024-11-19 06:44:25,514 WARN L873 $PredicateComparison]: unable to prove that (exists ((append_~node~0.base Int)) (and (= (store |c_old(#length)| append_~node~0.base (select |c_#length| append_~node~0.base)) |c_#length|) (= (select |c_old(#valid)| append_~node~0.base) 0))) is different from true [2024-11-19 06:44:25,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:44:25,592 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 [2024-11-19 06:44:25,599 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:44:25,599 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 [2024-11-19 06:44:25,669 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:44:25,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-19 06:44:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-19 06:44:25,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576635174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:25,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:44:25,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2024-11-19 06:44:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366393032] [2024-11-19 06:44:25,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:25,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 06:44:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:25,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 06:44:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306 [2024-11-19 06:44:25,982 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:26,715 INFO L93 Difference]: Finished difference Result 261 states and 290 transitions. [2024-11-19 06:44:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:44:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2024-11-19 06:44:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:26,717 INFO L225 Difference]: With dead ends: 261 [2024-11-19 06:44:26,717 INFO L226 Difference]: Without dead ends: 261 [2024-11-19 06:44:26,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=485, Unknown=1, NotChecked=46, Total=650 [2024-11-19 06:44:26,718 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 202 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:26,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 589 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 534 Invalid, 0 Unknown, 196 Unchecked, 0.5s Time] [2024-11-19 06:44:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-19 06:44:26,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 198. [2024-11-19 06:44:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 160 states have (on average 1.425) internal successors, (228), 189 states have internal predecessors, (228), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 06:44:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 237 transitions. [2024-11-19 06:44:26,725 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 237 transitions. Word has length 33 [2024-11-19 06:44:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:26,725 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 237 transitions. [2024-11-19 06:44:26,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 11 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:26,725 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 237 transitions. [2024-11-19 06:44:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 06:44:26,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:26,726 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:26,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 06:44:26,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:26,927 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:26,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1240813252, now seen corresponding path program 1 times [2024-11-19 06:44:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122884904] [2024-11-19 06:44:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122884904] [2024-11-19 06:44:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122884904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:27,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196941301] [2024-11-19 06:44:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:27,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:27,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:27,679 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) [2024-11-19 06:44:27,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:44:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:27,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-19 06:44:27,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:27,845 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 [2024-11-19 06:44:27,848 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 [2024-11-19 06:44:27,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:44:27,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:44:28,115 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-19 06:44:28,116 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 17 treesize of output 17 [2024-11-19 06:44:28,121 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 20 treesize of output 15 [2024-11-19 06:44:28,181 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 21 treesize of output 9 [2024-11-19 06:44:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:28,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:28,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 70 [2024-11-19 06:44:28,624 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 106 treesize of output 94 [2024-11-19 06:44:28,653 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 34 treesize of output 28 [2024-11-19 06:44:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:28,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196941301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:28,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:28,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 20 [2024-11-19 06:44:28,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134994597] [2024-11-19 06:44:28,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:28,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:44:28,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:28,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:44:28,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:44:28,905 INFO L87 Difference]: Start difference. First operand 198 states and 237 transitions. Second operand has 21 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 06:44:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:29,667 INFO L93 Difference]: Finished difference Result 207 states and 245 transitions. [2024-11-19 06:44:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:44:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2024-11-19 06:44:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:29,670 INFO L225 Difference]: With dead ends: 207 [2024-11-19 06:44:29,671 INFO L226 Difference]: Without dead ends: 207 [2024-11-19 06:44:29,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2024-11-19 06:44:29,672 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 173 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:29,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 745 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:44:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-19 06:44:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2024-11-19 06:44:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 164 states have (on average 1.4085365853658536) internal successors, (231), 193 states have internal predecessors, (231), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:44:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2024-11-19 06:44:29,680 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 41 [2024-11-19 06:44:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:29,680 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2024-11-19 06:44:29,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 06:44:29,681 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2024-11-19 06:44:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 06:44:29,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:29,682 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:29,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 06:44:29,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 06:44:29,887 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting appendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:29,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1240813253, now seen corresponding path program 1 times [2024-11-19 06:44:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:29,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811233877] [2024-11-19 06:44:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:29,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:30,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811233877] [2024-11-19 06:44:30,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811233877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516821360] [2024-11-19 06:44:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:30,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:30,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:30,419 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) [2024-11-19 06:44:30,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:44:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:30,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-19 06:44:30,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:30,587 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 [2024-11-19 06:44:30,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:44:30,703 INFO L349 Elim1Store]: treesize reduction 38, result has 36.7 percent of original size [2024-11-19 06:44:30,704 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 25 treesize of output 28 [2024-11-19 06:44:30,737 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 21 treesize of output 9 [2024-11-19 06:44:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:30,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:30,890 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 40 treesize of output 34 [2024-11-19 06:44:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516821360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:31,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:31,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2024-11-19 06:44:31,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431226526] [2024-11-19 06:44:31,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:31,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:44:31,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:31,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:44:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:44:31,333 INFO L87 Difference]: Start difference. First operand 202 states and 239 transitions. Second operand has 18 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 06:44:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:31,801 INFO L93 Difference]: Finished difference Result 204 states and 242 transitions. [2024-11-19 06:44:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:44:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2024-11-19 06:44:31,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:31,803 INFO L225 Difference]: With dead ends: 204 [2024-11-19 06:44:31,803 INFO L226 Difference]: Without dead ends: 204 [2024-11-19 06:44:31,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:44:31,804 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 140 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:31,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 687 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:44:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-19 06:44:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2024-11-19 06:44:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 164 states have (on average 1.4024390243902438) internal successors, (230), 193 states have internal predecessors, (230), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:44:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 238 transitions. [2024-11-19 06:44:31,809 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 238 transitions. Word has length 41 [2024-11-19 06:44:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:31,810 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 238 transitions. [2024-11-19 06:44:31,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.411764705882353) internal successors, (92), 17 states have internal predecessors, (92), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 06:44:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 238 transitions. [2024-11-19 06:44:31,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 06:44:31,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:31,811 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:31,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:44:32,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-19 06:44:32,012 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:32,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1836513292, now seen corresponding path program 1 times [2024-11-19 06:44:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:32,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420634048] [2024-11-19 06:44:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:32,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420634048] [2024-11-19 06:44:32,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420634048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:32,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770075325] [2024-11-19 06:44:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:32,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:32,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:32,619 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) [2024-11-19 06:44:32,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:44:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:32,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 06:44:32,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:32,791 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 [2024-11-19 06:44:32,809 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:44:32,809 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 [2024-11-19 06:44:32,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:44:32,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:44:32,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-19 06:44:32,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-19 06:44:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:33,124 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:33,193 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1264 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_1264) |c_ULTIMATE.start_main_~list2~0#1.base|) |c_ULTIMATE.start_main_~list2~0#1.offset|) 0)) (forall ((v_ArrVal_1263 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_1263) |c_ULTIMATE.start_main_~list2~0#1.base|) |c_ULTIMATE.start_main_~list2~0#1.offset|) 0))) is different from false [2024-11-19 06:44:33,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770075325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:33,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:44:33,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2024-11-19 06:44:33,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207902235] [2024-11-19 06:44:33,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:33,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:44:33,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:33,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:44:33,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=260, Unknown=1, NotChecked=32, Total=342 [2024-11-19 06:44:33,196 INFO L87 Difference]: Start difference. First operand 202 states and 238 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:33,704 INFO L93 Difference]: Finished difference Result 283 states and 336 transitions. [2024-11-19 06:44:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 06:44:33,705 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-19 06:44:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:33,706 INFO L225 Difference]: With dead ends: 283 [2024-11-19 06:44:33,706 INFO L226 Difference]: Without dead ends: 283 [2024-11-19 06:44:33,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=490, Unknown=1, NotChecked=46, Total=650 [2024-11-19 06:44:33,707 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 218 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:33,707 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 795 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:44:33,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-19 06:44:33,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 214. [2024-11-19 06:44:33,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 174 states have (on average 1.3850574712643677) internal successors, (241), 203 states have internal predecessors, (241), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:44:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 253 transitions. [2024-11-19 06:44:33,713 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 253 transitions. Word has length 42 [2024-11-19 06:44:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:33,713 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 253 transitions. [2024-11-19 06:44:33,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:33,714 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 253 transitions. [2024-11-19 06:44:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 06:44:33,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:33,714 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:33,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:44:33,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 06:44:33,915 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:33,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1591414825, now seen corresponding path program 1 times [2024-11-19 06:44:33,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:33,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272895045] [2024-11-19 06:44:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:33,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:35,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272895045] [2024-11-19 06:44:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272895045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:35,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841052819] [2024-11-19 06:44:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:35,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:35,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:35,077 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) [2024-11-19 06:44:35,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:44:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:35,244 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 06:44:35,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:35,252 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 [2024-11-19 06:44:35,274 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:44:35,274 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 [2024-11-19 06:44:35,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:44:35,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:44:35,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 06:44:35,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 06:44:35,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-19 06:44:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:35,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:35,787 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list2~0#1.offset| 4))) (and (forall ((v_ArrVal_1439 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_1439) |c_ULTIMATE.start_main_~list2~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_1440 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_1440) |c_ULTIMATE.start_main_~list2~0#1.base|) .cse0) 0)))) is different from false [2024-11-19 06:44:35,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841052819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:35,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:44:35,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14] total 32 [2024-11-19 06:44:35,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923198263] [2024-11-19 06:44:35,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:35,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 06:44:35,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 06:44:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=982, Unknown=1, NotChecked=64, Total=1190 [2024-11-19 06:44:35,791 INFO L87 Difference]: Start difference. First operand 214 states and 253 transitions. Second operand has 32 states, 32 states have (on average 2.34375) internal successors, (75), 29 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:36,606 INFO L93 Difference]: Finished difference Result 309 states and 362 transitions. [2024-11-19 06:44:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-19 06:44:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 29 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-19 06:44:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:36,608 INFO L225 Difference]: With dead ends: 309 [2024-11-19 06:44:36,608 INFO L226 Difference]: Without dead ends: 309 [2024-11-19 06:44:36,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=370, Invalid=1889, Unknown=1, NotChecked=92, Total=2352 [2024-11-19 06:44:36,609 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 412 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:36,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 674 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:44:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-19 06:44:36,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 217. [2024-11-19 06:44:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 176 states have (on average 1.3409090909090908) internal successors, (236), 206 states have internal predecessors, (236), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-19 06:44:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 250 transitions. [2024-11-19 06:44:36,615 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 250 transitions. Word has length 44 [2024-11-19 06:44:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:36,615 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 250 transitions. [2024-11-19 06:44:36,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.34375) internal successors, (75), 29 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:44:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 250 transitions. [2024-11-19 06:44:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-19 06:44:36,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:36,616 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:36,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 06:44:36,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:36,817 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:36,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:36,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1452710056, now seen corresponding path program 1 times [2024-11-19 06:44:36,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:36,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859948676] [2024-11-19 06:44:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:36,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 06:44:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859948676] [2024-11-19 06:44:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859948676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271343712] [2024-11-19 06:44:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:36,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:36,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:36,903 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) [2024-11-19 06:44:36,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:44:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:37,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 06:44:37,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 06:44:37,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 06:44:37,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271343712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:37,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:37,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 06:44:37,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464848312] [2024-11-19 06:44:37,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:37,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:44:37,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:37,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:44:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:44:37,135 INFO L87 Difference]: Start difference. First operand 217 states and 250 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:44:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:37,176 INFO L93 Difference]: Finished difference Result 275 states and 316 transitions. [2024-11-19 06:44:37,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:44:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 48 [2024-11-19 06:44:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:37,178 INFO L225 Difference]: With dead ends: 275 [2024-11-19 06:44:37,178 INFO L226 Difference]: Without dead ends: 275 [2024-11-19 06:44:37,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:44:37,179 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 59 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:37,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 393 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:44:37,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-19 06:44:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 260. [2024-11-19 06:44:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 215 states have (on average 1.3488372093023255) internal successors, (290), 243 states have internal predecessors, (290), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-19 06:44:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 316 transitions. [2024-11-19 06:44:37,189 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 316 transitions. Word has length 48 [2024-11-19 06:44:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:37,189 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 316 transitions. [2024-11-19 06:44:37,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-19 06:44:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 316 transitions. [2024-11-19 06:44:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 06:44:37,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:37,190 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:37,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 06:44:37,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:37,392 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:37,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1487400799, now seen corresponding path program 1 times [2024-11-19 06:44:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:37,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398714185] [2024-11-19 06:44:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 06:44:37,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:37,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398714185] [2024-11-19 06:44:37,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398714185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:44:37,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:44:37,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:44:37,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118157902] [2024-11-19 06:44:37,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:44:37,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:44:37,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:44:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:44:37,449 INFO L87 Difference]: Start difference. First operand 260 states and 316 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:44:37,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:37,457 INFO L93 Difference]: Finished difference Result 252 states and 306 transitions. [2024-11-19 06:44:37,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:44:37,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2024-11-19 06:44:37,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:37,459 INFO L225 Difference]: With dead ends: 252 [2024-11-19 06:44:37,459 INFO L226 Difference]: Without dead ends: 252 [2024-11-19 06:44:37,460 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 [2024-11-19 06:44:37,461 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:37,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:44:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-19 06:44:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-19 06:44:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 208 states have (on average 1.3461538461538463) internal successors, (280), 235 states have internal predecessors, (280), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-19 06:44:37,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 306 transitions. [2024-11-19 06:44:37,472 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 306 transitions. Word has length 50 [2024-11-19 06:44:37,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:37,472 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 306 transitions. [2024-11-19 06:44:37,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:44:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 306 transitions. [2024-11-19 06:44:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-19 06:44:37,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:37,474 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:37,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 06:44:37,474 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:37,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1096013604, now seen corresponding path program 1 times [2024-11-19 06:44:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995850752] [2024-11-19 06:44:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:37,908 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:37,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995850752] [2024-11-19 06:44:37,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995850752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:37,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581721417] [2024-11-19 06:44:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:37,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:37,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:37,910 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) [2024-11-19 06:44:37,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:44:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:38,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 06:44:38,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:38,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:44:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:38,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:38,472 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 32 treesize of output 26 [2024-11-19 06:44:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581721417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:38,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:38,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 21 [2024-11-19 06:44:38,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562895226] [2024-11-19 06:44:38,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:38,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:44:38,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:38,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:44:38,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:44:38,520 INFO L87 Difference]: Start difference. First operand 252 states and 306 transitions. Second operand has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 19 states have internal predecessors, (74), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:44:38,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:38,987 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2024-11-19 06:44:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-19 06:44:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 19 states have internal predecessors, (74), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 52 [2024-11-19 06:44:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:38,989 INFO L225 Difference]: With dead ends: 266 [2024-11-19 06:44:38,989 INFO L226 Difference]: Without dead ends: 266 [2024-11-19 06:44:38,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=1214, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 06:44:38,990 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 141 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:38,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1077 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:44:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-19 06:44:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 245. [2024-11-19 06:44:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 201 states have (on average 1.3482587064676617) internal successors, (271), 228 states have internal predecessors, (271), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-19 06:44:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 297 transitions. [2024-11-19 06:44:38,997 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 297 transitions. Word has length 52 [2024-11-19 06:44:38,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:38,997 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 297 transitions. [2024-11-19 06:44:38,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.5238095238095237) internal successors, (74), 19 states have internal predecessors, (74), 4 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:44:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 297 transitions. [2024-11-19 06:44:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 06:44:38,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:38,998 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:39,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:44:39,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:39,199 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting appendErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:39,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash -514287632, now seen corresponding path program 1 times [2024-11-19 06:44:39,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:39,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151094883] [2024-11-19 06:44:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:39,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 06:44:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151094883] [2024-11-19 06:44:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151094883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434483897] [2024-11-19 06:44:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:39,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:39,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:39,798 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) [2024-11-19 06:44:39,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:44:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:40,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-19 06:44:40,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:40,044 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 [2024-11-19 06:44:40,050 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 [2024-11-19 06:44:40,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:44:40,236 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-19 06:44:40,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 19 [2024-11-19 06:44:40,254 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2024-11-19 06:44:40,254 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 29 treesize of output 33 [2024-11-19 06:44:40,695 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 33 treesize of output 15 [2024-11-19 06:44:40,702 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:44:40,723 INFO L349 Elim1Store]: treesize reduction 31, result has 31.1 percent of original size [2024-11-19 06:44:40,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 28 [2024-11-19 06:44:40,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2024-11-19 06:44:40,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:44:40,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2024-11-19 06:44:40,930 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-19 06:44:40,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2024-11-19 06:44:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:44:40,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:41,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434483897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:41,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:44:41,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 20 [2024-11-19 06:44:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042022403] [2024-11-19 06:44:41,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:41,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:44:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:44:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:44:41,297 INFO L87 Difference]: Start difference. First operand 245 states and 297 transitions. Second operand has 21 states, 20 states have (on average 4.5) internal successors, (90), 17 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:44:42,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:42,528 INFO L93 Difference]: Finished difference Result 285 states and 334 transitions. [2024-11-19 06:44:42,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-19 06:44:42,529 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 17 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-19 06:44:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:42,530 INFO L225 Difference]: With dead ends: 285 [2024-11-19 06:44:42,531 INFO L226 Difference]: Without dead ends: 285 [2024-11-19 06:44:42,531 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=302, Invalid=1590, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 06:44:42,532 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 217 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:42,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 736 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:44:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-19 06:44:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 231. [2024-11-19 06:44:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 191 states have (on average 1.2670157068062826) internal successors, (242), 214 states have internal predecessors, (242), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-19 06:44:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 265 transitions. [2024-11-19 06:44:42,542 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 265 transitions. Word has length 54 [2024-11-19 06:44:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:42,543 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 265 transitions. [2024-11-19 06:44:42,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.5) internal successors, (90), 17 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:44:42,543 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 265 transitions. [2024-11-19 06:44:42,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 06:44:42,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:42,544 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:42,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 06:44:42,747 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,SelfDestructingSolverStorable21 [2024-11-19 06:44:42,748 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting appendErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:42,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:42,748 INFO L85 PathProgramCache]: Analyzing trace with hash 948068346, now seen corresponding path program 1 times [2024-11-19 06:44:42,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:42,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598986926] [2024-11-19 06:44:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:42,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:44:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598986926] [2024-11-19 06:44:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598986926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428890196] [2024-11-19 06:44:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:44,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:44,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:44,854 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) [2024-11-19 06:44:44,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:44:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:45,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-19 06:44:45,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:45,088 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 [2024-11-19 06:44:45,096 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 [2024-11-19 06:44:45,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:44:45,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:44:45,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:44:45,301 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 20 treesize of output 15 [2024-11-19 06:44:45,309 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-19 06:44:45,309 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 17 treesize of output 17 [2024-11-19 06:44:45,365 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 21 treesize of output 9 [2024-11-19 06:44:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:44:45,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:45,790 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 76 treesize of output 70 [2024-11-19 06:44:45,792 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 106 treesize of output 94 [2024-11-19 06:44:45,816 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 34 treesize of output 28 [2024-11-19 06:44:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:44:46,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428890196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:46,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:46,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 6, 6] total 39 [2024-11-19 06:44:46,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329396113] [2024-11-19 06:44:46,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:46,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-19 06:44:46,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-19 06:44:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 06:44:46,026 INFO L87 Difference]: Start difference. First operand 231 states and 265 transitions. Second operand has 40 states, 39 states have (on average 3.5128205128205128) internal successors, (137), 39 states have internal predecessors, (137), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:44:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:47,779 INFO L93 Difference]: Finished difference Result 281 states and 315 transitions. [2024-11-19 06:44:47,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-19 06:44:47,779 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.5128205128205128) internal successors, (137), 39 states have internal predecessors, (137), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2024-11-19 06:44:47,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:47,780 INFO L225 Difference]: With dead ends: 281 [2024-11-19 06:44:47,781 INFO L226 Difference]: Without dead ends: 281 [2024-11-19 06:44:47,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=537, Invalid=3753, Unknown=0, NotChecked=0, Total=4290 [2024-11-19 06:44:47,782 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 621 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:47,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1037 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 06:44:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-19 06:44:47,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 176. [2024-11-19 06:44:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 143 states have (on average 1.3076923076923077) internal successors, (187), 166 states have internal predecessors, (187), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:44:47,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 199 transitions. [2024-11-19 06:44:47,788 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 199 transitions. Word has length 60 [2024-11-19 06:44:47,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:47,788 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 199 transitions. [2024-11-19 06:44:47,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.5128205128205128) internal successors, (137), 39 states have internal predecessors, (137), 6 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:44:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 199 transitions. [2024-11-19 06:44:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 06:44:47,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:47,789 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:47,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 06:44:47,989 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,SelfDestructingSolverStorable22 [2024-11-19 06:44:47,991 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting appendErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:47,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:47,992 INFO L85 PathProgramCache]: Analyzing trace with hash 948068345, now seen corresponding path program 1 times [2024-11-19 06:44:47,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:47,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899913478] [2024-11-19 06:44:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:47,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:44:48,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899913478] [2024-11-19 06:44:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899913478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:48,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918454502] [2024-11-19 06:44:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:48,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:48,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:48,605 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) [2024-11-19 06:44:48,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:44:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:48,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-19 06:44:48,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:48,849 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 [2024-11-19 06:44:48,906 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 [2024-11-19 06:44:48,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-19 06:44:48,996 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-19 06:44:48,996 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 23 treesize of output 24 [2024-11-19 06:44:49,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:44:49,044 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 32 treesize of output 12 [2024-11-19 06:44:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:44:49,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:49,213 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 96 treesize of output 90 [2024-11-19 06:44:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:44:49,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918454502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:49,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:49,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 23 [2024-11-19 06:44:49,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236983511] [2024-11-19 06:44:49,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:49,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 06:44:49,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:49,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 06:44:49,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2024-11-19 06:44:49,753 INFO L87 Difference]: Start difference. First operand 176 states and 199 transitions. Second operand has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:44:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:50,487 INFO L93 Difference]: Finished difference Result 268 states and 301 transitions. [2024-11-19 06:44:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:44:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2024-11-19 06:44:50,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:50,489 INFO L225 Difference]: With dead ends: 268 [2024-11-19 06:44:50,489 INFO L226 Difference]: Without dead ends: 268 [2024-11-19 06:44:50,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 06:44:50,490 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 400 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:50,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 886 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:44:50,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-19 06:44:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 175. [2024-11-19 06:44:50,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 143 states have (on average 1.3006993006993006) internal successors, (186), 165 states have internal predecessors, (186), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:44:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2024-11-19 06:44:50,496 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2024-11-19 06:44:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:50,496 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2024-11-19 06:44:50,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.304347826086956) internal successors, (122), 23 states have internal predecessors, (122), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:44:50,496 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2024-11-19 06:44:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-19 06:44:50,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:50,497 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:50,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 06:44:50,701 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,SelfDestructingSolverStorable23 [2024-11-19 06:44:50,702 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:50,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash -850577046, now seen corresponding path program 2 times [2024-11-19 06:44:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:50,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816089976] [2024-11-19 06:44:50,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:44:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:50,746 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:44:50,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:44:50,881 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-19 06:44:50,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:50,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816089976] [2024-11-19 06:44:50,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816089976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:50,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626251813] [2024-11-19 06:44:50,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:44:50,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:50,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:50,884 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) [2024-11-19 06:44:50,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:44:51,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:44:51,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:44:51,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 06:44:51,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-19 06:44:51,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-19 06:44:51,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626251813] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:44:51,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:44:51,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-11-19 06:44:51,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600238528] [2024-11-19 06:44:51,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:51,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:44:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:51,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:44:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:44:51,361 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:44:51,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:51,433 INFO L93 Difference]: Finished difference Result 206 states and 215 transitions. [2024-11-19 06:44:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:44:51,434 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 102 [2024-11-19 06:44:51,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:51,435 INFO L225 Difference]: With dead ends: 206 [2024-11-19 06:44:51,435 INFO L226 Difference]: Without dead ends: 206 [2024-11-19 06:44:51,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:44:51,436 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 79 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:51,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 376 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:44:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-19 06:44:51,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 186. [2024-11-19 06:44:51,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 153 states have (on average 1.3137254901960784) internal successors, (201), 175 states have internal predecessors, (201), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:44:51,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 215 transitions. [2024-11-19 06:44:51,442 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 215 transitions. Word has length 102 [2024-11-19 06:44:51,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:51,442 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 215 transitions. [2024-11-19 06:44:51,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 06:44:51,442 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 215 transitions. [2024-11-19 06:44:51,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-19 06:44:51,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:51,443 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:51,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 06:44:51,644 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,SelfDestructingSolverStorable24 [2024-11-19 06:44:51,644 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:51,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:51,644 INFO L85 PathProgramCache]: Analyzing trace with hash -575384464, now seen corresponding path program 3 times [2024-11-19 06:44:51,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:51,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744154752] [2024-11-19 06:44:51,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:44:51,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:51,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:44:51,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:44:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 136 proven. 13 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 06:44:52,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744154752] [2024-11-19 06:44:52,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744154752] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:52,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647692261] [2024-11-19 06:44:52,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:44:52,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:52,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:52,114 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) [2024-11-19 06:44:52,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:44:54,284 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:44:54,284 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:44:54,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-19 06:44:54,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:54,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:44:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 136 proven. 13 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-19 06:44:54,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647692261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:54,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:44:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 21 [2024-11-19 06:44:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336042162] [2024-11-19 06:44:54,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:54,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-19 06:44:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-19 06:44:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2024-11-19 06:44:54,615 INFO L87 Difference]: Start difference. First operand 186 states and 215 transitions. Second operand has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 06:44:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:55,285 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2024-11-19 06:44:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 06:44:55,285 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 120 [2024-11-19 06:44:55,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:55,287 INFO L225 Difference]: With dead ends: 179 [2024-11-19 06:44:55,287 INFO L226 Difference]: Without dead ends: 179 [2024-11-19 06:44:55,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 06:44:55,289 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 139 mSDsluCounter, 1035 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:55,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1111 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:44:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-19 06:44:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-19 06:44:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 146 states have (on average 1.3150684931506849) internal successors, (192), 168 states have internal predecessors, (192), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:44:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 206 transitions. [2024-11-19 06:44:55,295 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 206 transitions. Word has length 120 [2024-11-19 06:44:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:55,295 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 206 transitions. [2024-11-19 06:44:55,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.523809523809524) internal successors, (95), 20 states have internal predecessors, (95), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 06:44:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 206 transitions. [2024-11-19 06:44:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 06:44:55,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:55,298 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:55,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 06:44:55,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:55,499 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:55,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1145027360, now seen corresponding path program 1 times [2024-11-19 06:44:55,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:55,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793686211] [2024-11-19 06:44:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:55,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 42 proven. 79 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-19 06:44:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793686211] [2024-11-19 06:44:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793686211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559485217] [2024-11-19 06:44:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:56,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:56,567 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) [2024-11-19 06:44:56,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:44:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:56,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 06:44:56,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:57,026 WARN L873 $PredicateComparison]: unable to prove that (exists ((append_~node~0.base Int)) (and (= (select |c_old(#valid)| append_~node~0.base) 0) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base (select |c_#valid| append_~node~0.base))))) is different from true [2024-11-19 06:44:57,095 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 06:44:57,096 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 [2024-11-19 06:44:57,174 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 06:44:57,174 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 [2024-11-19 06:44:57,184 WARN L873 $PredicateComparison]: unable to prove that (exists ((append_~node~0.base Int)) (= |c_#valid| (store |c_old(#valid)| append_~node~0.base 1))) is different from true [2024-11-19 06:44:57,211 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:44:57,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-19 06:44:57,248 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:44:57,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-19 06:44:57,301 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:44:57,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-19 06:44:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 107 not checked. [2024-11-19 06:44:57,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:44:57,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559485217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:57,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:44:57,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 15 [2024-11-19 06:44:57,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953187205] [2024-11-19 06:44:57,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:44:57,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:44:57,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:44:57,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:44:57,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=187, Unknown=2, NotChecked=58, Total=306 [2024-11-19 06:44:57,715 INFO L87 Difference]: Start difference. First operand 179 states and 206 transitions. Second operand has 16 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:44:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:44:57,968 INFO L93 Difference]: Finished difference Result 204 states and 231 transitions. [2024-11-19 06:44:57,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:44:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 128 [2024-11-19 06:44:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:44:57,970 INFO L225 Difference]: With dead ends: 204 [2024-11-19 06:44:57,970 INFO L226 Difference]: Without dead ends: 204 [2024-11-19 06:44:57,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 192 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=312, Unknown=2, NotChecked=78, Total=506 [2024-11-19 06:44:57,971 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 74 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:44:57,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 443 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 344 Invalid, 0 Unknown, 213 Unchecked, 0.2s Time] [2024-11-19 06:44:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-19 06:44:57,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 178. [2024-11-19 06:44:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 146 states have (on average 1.3082191780821917) internal successors, (191), 167 states have internal predecessors, (191), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:44:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2024-11-19 06:44:57,976 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 128 [2024-11-19 06:44:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:44:57,976 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2024-11-19 06:44:57,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.133333333333333) internal successors, (122), 15 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:44:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2024-11-19 06:44:57,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-19 06:44:57,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:44:57,977 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:44:57,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-19 06:44:58,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-19 06:44:58,178 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:44:58,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:44:58,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1145027361, now seen corresponding path program 1 times [2024-11-19 06:44:58,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:44:58,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306023592] [2024-11-19 06:44:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:58,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:44:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 5 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-19 06:44:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:44:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306023592] [2024-11-19 06:44:59,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306023592] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:44:59,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618195201] [2024-11-19 06:44:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:44:59,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:44:59,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:44:59,383 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) [2024-11-19 06:44:59,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-19 06:44:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:44:59,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-19 06:44:59,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:44:59,943 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 [2024-11-19 06:44:59,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 38 [2024-11-19 06:45:00,031 INFO L349 Elim1Store]: treesize reduction 38, result has 29.6 percent of original size [2024-11-19 06:45:00,032 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 37 treesize of output 22 [2024-11-19 06:45:00,042 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 26 treesize of output 9 [2024-11-19 06:45:00,344 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:45:00,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 15 [2024-11-19 06:45:00,364 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 06:45:00,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2024-11-19 06:45:00,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 06:45:00,455 WARN L873 $PredicateComparison]: unable to prove that (exists ((append_~node~0.base Int)) (and (= (store |c_old(#length)| append_~node~0.base (select |c_#length| append_~node~0.base)) |c_#length|) (= (select |c_old(#valid)| append_~node~0.base) 0))) is different from true [2024-11-19 06:45:00,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:45:00,529 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 [2024-11-19 06:45:00,537 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:45:00,537 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 [2024-11-19 06:45:00,540 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 8 treesize of output 4 [2024-11-19 06:45:00,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:45:00,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:45:00,756 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2024-11-19 06:45:00,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 19 [2024-11-19 06:45:01,052 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 35 treesize of output 23 [2024-11-19 06:45:01,057 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 23 treesize of output 11 [2024-11-19 06:45:01,069 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:45:01,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-11-19 06:45:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 25 proven. 144 refuted. 0 times theorem prover too weak. 1 trivial. 49 not checked. [2024-11-19 06:45:01,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:45:05,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618195201] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:45:05,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:45:05,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27] total 38 [2024-11-19 06:45:05,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762153904] [2024-11-19 06:45:05,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:45:05,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-19 06:45:05,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:45:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-19 06:45:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1391, Unknown=2, NotChecked=76, Total=1640 [2024-11-19 06:45:05,316 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand has 39 states, 38 states have (on average 4.684210526315789) internal successors, (178), 35 states have internal predecessors, (178), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-19 06:45:09,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 06:45:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:45:10,742 INFO L93 Difference]: Finished difference Result 216 states and 241 transitions. [2024-11-19 06:45:10,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 06:45:10,742 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 4.684210526315789) internal successors, (178), 35 states have internal predecessors, (178), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 128 [2024-11-19 06:45:10,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:45:10,743 INFO L225 Difference]: With dead ends: 216 [2024-11-19 06:45:10,743 INFO L226 Difference]: Without dead ends: 216 [2024-11-19 06:45:10,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=429, Invalid=2995, Unknown=2, NotChecked=114, Total=3540 [2024-11-19 06:45:10,745 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 409 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:45:10,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1183 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1157 Invalid, 1 Unknown, 150 Unchecked, 4.8s Time] [2024-11-19 06:45:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-19 06:45:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 177. [2024-11-19 06:45:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 146 states have (on average 1.3013698630136987) internal successors, (190), 166 states have internal predecessors, (190), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:45:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 204 transitions. [2024-11-19 06:45:10,751 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 204 transitions. Word has length 128 [2024-11-19 06:45:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:45:10,751 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 204 transitions. [2024-11-19 06:45:10,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 4.684210526315789) internal successors, (178), 35 states have internal predecessors, (178), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-19 06:45:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 204 transitions. [2024-11-19 06:45:10,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 06:45:10,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:45:10,753 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:45:10,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-19 06:45:10,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-19 06:45:10,954 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:45:10,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:45:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash 859665889, now seen corresponding path program 1 times [2024-11-19 06:45:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:45:10,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357482665] [2024-11-19 06:45:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:10,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:45:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:45:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 5 proven. 122 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-19 06:45:12,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:45:12,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357482665] [2024-11-19 06:45:12,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357482665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:45:12,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201753603] [2024-11-19 06:45:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:12,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:45:12,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:45:12,610 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) [2024-11-19 06:45:12,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 06:45:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:45:13,004 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-19 06:45:13,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:45:13,012 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 [2024-11-19 06:45:13,022 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:45:13,023 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 [2024-11-19 06:45:13,034 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 [2024-11-19 06:45:13,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 06:45:13,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-19 06:45:13,256 INFO L349 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2024-11-19 06:45:13,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 27 [2024-11-19 06:45:13,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2024-11-19 06:45:13,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:45:13,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 32 [2024-11-19 06:45:13,684 INFO L349 Elim1Store]: treesize reduction 20, result has 60.0 percent of original size [2024-11-19 06:45:13,685 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 35 treesize of output 48 [2024-11-19 06:45:13,893 INFO L349 Elim1Store]: treesize reduction 80, result has 37.0 percent of original size [2024-11-19 06:45:13,893 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 3 case distinctions, treesize of input 39 treesize of output 53 [2024-11-19 06:45:13,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 45 [2024-11-19 06:45:14,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 38 [2024-11-19 06:45:14,233 INFO L349 Elim1Store]: treesize reduction 64, result has 49.6 percent of original size [2024-11-19 06:45:14,233 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 3 case distinctions, treesize of input 55 treesize of output 85 [2024-11-19 06:45:14,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 68 [2024-11-19 06:45:14,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:45:14,633 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 71 treesize of output 51 [2024-11-19 06:45:14,678 INFO L349 Elim1Store]: treesize reduction 42, result has 60.4 percent of original size [2024-11-19 06:45:14,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 103 [2024-11-19 06:45:14,726 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 17 treesize of output 9 [2024-11-19 06:45:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 16 proven. 173 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 06:45:14,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:45:14,790 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4808 (Array Int Int)) (v_append_~node~0.base_129 Int)) (let ((.cse0 (store |c_#valid| v_append_~node~0.base_129 1))) (or (= (select .cse0 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list2~0#1.base| v_ArrVal_4808) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 1) (not (= (select .cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list2~0#1.base|) (+ |c_ULTIMATE.start_main_~list2~0#1.offset| 4))) 1))))) is different from false [2024-11-19 06:45:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201753603] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:45:14,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:45:14,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 30] total 40 [2024-11-19 06:45:14,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259131435] [2024-11-19 06:45:14,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:45:14,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-19 06:45:14,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:45:14,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-19 06:45:14,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1503, Unknown=1, NotChecked=78, Total=1722 [2024-11-19 06:45:14,793 INFO L87 Difference]: Start difference. First operand 177 states and 204 transitions. Second operand has 41 states, 40 states have (on average 3.85) internal successors, (154), 40 states have internal predecessors, (154), 6 states have call successors, (6), 2 states have call predecessors, (6), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-19 06:45:16,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:45:16,230 INFO L93 Difference]: Finished difference Result 208 states and 230 transitions. [2024-11-19 06:45:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 06:45:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 3.85) internal successors, (154), 40 states have internal predecessors, (154), 6 states have call successors, (6), 2 states have call predecessors, (6), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 130 [2024-11-19 06:45:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:45:16,231 INFO L225 Difference]: With dead ends: 208 [2024-11-19 06:45:16,231 INFO L226 Difference]: Without dead ends: 208 [2024-11-19 06:45:16,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=365, Invalid=3060, Unknown=1, NotChecked=114, Total=3540 [2024-11-19 06:45:16,233 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 317 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:45:16,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 860 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 06:45:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-19 06:45:16,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-11-19 06:45:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 147 states have (on average 1.251700680272109) internal successors, (184), 164 states have internal predecessors, (184), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:45:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2024-11-19 06:45:16,237 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 130 [2024-11-19 06:45:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:45:16,238 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2024-11-19 06:45:16,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 3.85) internal successors, (154), 40 states have internal predecessors, (154), 6 states have call successors, (6), 2 states have call predecessors, (6), 8 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-19 06:45:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2024-11-19 06:45:16,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-19 06:45:16,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:45:16,239 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:45:16,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-19 06:45:16,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:45:16,440 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:45:16,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:45:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash 859665890, now seen corresponding path program 1 times [2024-11-19 06:45:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:45:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835105919] [2024-11-19 06:45:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:16,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:45:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:45:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 5 proven. 161 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-19 06:45:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:45:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835105919] [2024-11-19 06:45:18,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835105919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:45:18,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14431651] [2024-11-19 06:45:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:18,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:45:18,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:45:18,803 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) [2024-11-19 06:45:18,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-19 06:45:19,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:45:19,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-19 06:45:19,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:45:19,221 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 [2024-11-19 06:45:19,233 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:45:19,234 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 [2024-11-19 06:45:19,248 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 [2024-11-19 06:45:19,253 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 [2024-11-19 06:45:19,313 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 [2024-11-19 06:45:19,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 06:45:19,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-19 06:45:19,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2024-11-19 06:45:19,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2024-11-19 06:45:19,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-19 06:45:19,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:45:19,744 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 18 treesize of output 13 [2024-11-19 06:45:19,752 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-19 06:45:19,753 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 15 treesize of output 15 [2024-11-19 06:45:20,076 INFO L349 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2024-11-19 06:45:20,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 27 [2024-11-19 06:45:20,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-11-19 06:45:20,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2024-11-19 06:45:20,492 INFO L349 Elim1Store]: treesize reduction 68, result has 50.4 percent of original size [2024-11-19 06:45:20,493 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 3 case distinctions, treesize of input 41 treesize of output 75 [2024-11-19 06:45:20,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 46 [2024-11-19 06:45:20,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2024-11-19 06:45:20,637 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 [2024-11-19 06:45:21,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 30 [2024-11-19 06:45:21,038 INFO L349 Elim1Store]: treesize reduction 33, result has 41.1 percent of original size [2024-11-19 06:45:21,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 35 [2024-11-19 06:45:21,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 36 [2024-11-19 06:45:21,049 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 19 treesize of output 11 [2024-11-19 06:45:21,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2024-11-19 06:45:21,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:45:21,520 INFO L349 Elim1Store]: treesize reduction 60, result has 39.4 percent of original size [2024-11-19 06:45:21,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 57 [2024-11-19 06:45:21,525 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 19 treesize of output 11 [2024-11-19 06:45:21,533 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:45:21,533 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 [2024-11-19 06:45:21,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2024-11-19 06:45:21,646 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 17 treesize of output 9 [2024-11-19 06:45:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 42 proven. 173 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:45:21,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:45:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14431651] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:45:22,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:45:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 31] total 48 [2024-11-19 06:45:22,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265862193] [2024-11-19 06:45:22,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:45:22,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 06:45:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:45:22,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 06:45:22,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2547, Unknown=2, NotChecked=0, Total=2756 [2024-11-19 06:45:22,075 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand has 49 states, 48 states have (on average 4.166666666666667) internal successors, (200), 47 states have internal predecessors, (200), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-19 06:45:26,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 06:45:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:45:29,496 INFO L93 Difference]: Finished difference Result 202 states and 227 transitions. [2024-11-19 06:45:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 06:45:29,496 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 4.166666666666667) internal successors, (200), 47 states have internal predecessors, (200), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) Word has length 130 [2024-11-19 06:45:29,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:45:29,497 INFO L225 Difference]: With dead ends: 202 [2024-11-19 06:45:29,497 INFO L226 Difference]: Without dead ends: 202 [2024-11-19 06:45:29,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=697, Invalid=5621, Unknown=2, NotChecked=0, Total=6320 [2024-11-19 06:45:29,499 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 488 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:45:29,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1396 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1616 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2024-11-19 06:45:29,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-19 06:45:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 176. [2024-11-19 06:45:29,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 149 states have (on average 1.2348993288590604) internal successors, (184), 165 states have internal predecessors, (184), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 06:45:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 198 transitions. [2024-11-19 06:45:29,504 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 198 transitions. Word has length 130 [2024-11-19 06:45:29,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:45:29,504 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 198 transitions. [2024-11-19 06:45:29,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 4.166666666666667) internal successors, (200), 47 states have internal predecessors, (200), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-19 06:45:29,505 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 198 transitions. [2024-11-19 06:45:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-19 06:45:29,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:45:29,506 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:45:29,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-19 06:45:29,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:45:29,707 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2024-11-19 06:45:29,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:45:29,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1934897290, now seen corresponding path program 1 times [2024-11-19 06:45:29,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:45:29,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250746325] [2024-11-19 06:45:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:45:29,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms