./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.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 34885b99d6eef31987b044fabc3622fa239d5dff7e774ca124915f70431dc2b3 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 07:34:14,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:34:14,867 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 07:34:14,873 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:34:14,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:34:14,901 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:34:14,901 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:34:14,901 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:34:14,902 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 07:34:14,903 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 07:34:14,903 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:34:14,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:34:14,904 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:34:14,904 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:34:14,904 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 07:34:14,905 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:34:14,905 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:34:14,905 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:34:14,906 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:34:14,906 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:34:14,906 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:34:14,906 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:34:14,907 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:34:14,907 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:34:14,907 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:34:14,907 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:34:14,908 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:34:14,908 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:34:14,908 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:34:14,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:34:14,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:34:14,909 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:34:14,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:34:14,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:34:14,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:34:14,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:34:14,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 07:34:14,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:34:14,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:34:14,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 07:34:14,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 07:34:14,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:34:14,912 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34885b99d6eef31987b044fabc3622fa239d5dff7e774ca124915f70431dc2b3 [2024-11-09 07:34:15,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:34:15,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:34:15,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:34:15,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:34:15,164 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:34:15,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2024-11-09 07:34:16,429 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:34:16,620 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:34:16,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncat-alloca-2.i [2024-11-09 07:34:16,631 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9a9737a/6d2b2c5481064b3fabc9832ad7b7a2ea/FLAG5bbf43a60 [2024-11-09 07:34:16,985 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab9a9737a/6d2b2c5481064b3fabc9832ad7b7a2ea [2024-11-09 07:34:16,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:34:16,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:34:16,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:34:16,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:34:16,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:34:16,994 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:34:16" (1/1) ... [2024-11-09 07:34:16,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29787b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:16, skipping insertion in model container [2024-11-09 07:34:16,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:34:16" (1/1) ... [2024-11-09 07:34:17,030 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:34:17,320 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:34:17,322 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 07:34:17,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:34:17,338 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:34:17,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:34:17,411 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:34:17,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17 WrapperNode [2024-11-09 07:34:17,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:34:17,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:34:17,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:34:17,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:34:17,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,454 INFO L138 Inliner]: procedures = 117, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2024-11-09 07:34:17,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:34:17,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:34:17,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:34:17,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:34:17,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,469 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,481 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [5, 3]. 63 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 6 writes are split as follows [4, 2]. [2024-11-09 07:34:17,482 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,482 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:34:17,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:34:17,497 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:34:17,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:34:17,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (1/1) ... [2024-11-09 07:34:17,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:34:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:17,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 07:34:17,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 07:34:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 07:34:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 07:34:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 07:34:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 07:34:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:34:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:34:17,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:34:17,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:34:17,678 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:34:17,680 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:34:17,882 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-09 07:34:17,882 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:34:17,891 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:34:17,891 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 07:34:17,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:34:17 BoogieIcfgContainer [2024-11-09 07:34:17,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:34:17,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:34:17,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:34:17,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:34:17,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:34:16" (1/3) ... [2024-11-09 07:34:17,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6848a336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:34:17, skipping insertion in model container [2024-11-09 07:34:17,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:34:17" (2/3) ... [2024-11-09 07:34:17,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6848a336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:34:17, skipping insertion in model container [2024-11-09 07:34:17,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:34:17" (3/3) ... [2024-11-09 07:34:17,898 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca-2.i [2024-11-09 07:34:17,911 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:34:17,911 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-09 07:34:17,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:34:17,950 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;@14298d75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:34:17,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-09 07:34:17,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 34 states have (on average 1.911764705882353) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:17,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 07:34:17,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:17,959 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:17,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:17,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1805031115, now seen corresponding path program 1 times [2024-11-09 07:34:17,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:17,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394176834] [2024-11-09 07:34:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394176834] [2024-11-09 07:34:18,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394176834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:18,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:18,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:34:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994030506] [2024-11-09 07:34:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:18,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:34:18,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:34:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:34:18,134 INFO L87 Difference]: Start difference. First operand has 52 states, 34 states have (on average 1.911764705882353) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:18,175 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-09 07:34:18,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:34:18,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 07:34:18,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:18,182 INFO L225 Difference]: With dead ends: 53 [2024-11-09 07:34:18,182 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 07:34:18,184 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:34:18,188 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:18,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 91 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 07:34:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-09 07:34:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-09 07:34:18,215 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 7 [2024-11-09 07:34:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:18,215 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-09 07:34:18,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-09 07:34:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:34:18,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:18,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:18,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:34:18,217 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:18,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:18,217 INFO L85 PathProgramCache]: Analyzing trace with hash 121388915, now seen corresponding path program 1 times [2024-11-09 07:34:18,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:18,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525611091] [2024-11-09 07:34:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:18,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:18,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525611091] [2024-11-09 07:34:18,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525611091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:18,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:18,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:34:18,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987000681] [2024-11-09 07:34:18,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:18,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:34:18,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:18,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:34:18,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:18,402 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:18,483 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-09 07:34:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:34:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 07:34:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:18,484 INFO L225 Difference]: With dead ends: 53 [2024-11-09 07:34:18,484 INFO L226 Difference]: Without dead ends: 50 [2024-11-09 07:34:18,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:34:18,486 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 6 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:18,486 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 193 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-09 07:34:18,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-09 07:34:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-09 07:34:18,490 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 8 [2024-11-09 07:34:18,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:18,491 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-09 07:34:18,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,491 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-09 07:34:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:34:18,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:18,492 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:18,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:34:18,492 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:18,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash 178647217, now seen corresponding path program 1 times [2024-11-09 07:34:18,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562524375] [2024-11-09 07:34:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:18,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:18,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562524375] [2024-11-09 07:34:18,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562524375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:18,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:18,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:34:18,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914314045] [2024-11-09 07:34:18,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:18,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:34:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:34:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:34:18,655 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:18,694 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-11-09 07:34:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:34:18,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 07:34:18,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:18,696 INFO L225 Difference]: With dead ends: 48 [2024-11-09 07:34:18,696 INFO L226 Difference]: Without dead ends: 48 [2024-11-09 07:34:18,696 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:34:18,697 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 17 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:18,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 67 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-09 07:34:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-09 07:34:18,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2024-11-09 07:34:18,701 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 8 [2024-11-09 07:34:18,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:18,701 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2024-11-09 07:34:18,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:18,702 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2024-11-09 07:34:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 07:34:18,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:18,702 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:18,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:34:18,703 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:18,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash 178647218, now seen corresponding path program 1 times [2024-11-09 07:34:18,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:18,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255518932] [2024-11-09 07:34:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:18,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:18,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:18,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:18,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255518932] [2024-11-09 07:34:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255518932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:18,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:34:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396646535] [2024-11-09 07:34:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:18,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:34:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:34:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:34:18,980 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:19,069 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-11-09 07:34:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:34:19,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 07:34:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:19,070 INFO L225 Difference]: With dead ends: 52 [2024-11-09 07:34:19,070 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 07:34:19,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:34:19,072 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 50 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:19,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 133 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 07:34:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2024-11-09 07:34:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2024-11-09 07:34:19,080 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 8 [2024-11-09 07:34:19,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:19,080 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2024-11-09 07:34:19,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,081 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2024-11-09 07:34:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 07:34:19,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:19,082 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:19,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:34:19,082 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:19,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash -118766563, now seen corresponding path program 1 times [2024-11-09 07:34:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:19,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433967426] [2024-11-09 07:34:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:19,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:19,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:19,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433967426] [2024-11-09 07:34:19,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433967426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:19,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:19,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:34:19,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401422568] [2024-11-09 07:34:19,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:19,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:34:19,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:34:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:19,120 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:19,140 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2024-11-09 07:34:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:34:19,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-09 07:34:19,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:19,141 INFO L225 Difference]: With dead ends: 66 [2024-11-09 07:34:19,141 INFO L226 Difference]: Without dead ends: 66 [2024-11-09 07:34:19,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:19,142 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:19,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 140 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-09 07:34:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2024-11-09 07:34:19,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.6) internal successors, (72), 59 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-11-09 07:34:19,146 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 10 [2024-11-09 07:34:19,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:19,146 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-11-09 07:34:19,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,146 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-11-09 07:34:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 07:34:19,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:19,147 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:19,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 07:34:19,147 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:19,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1656240799, now seen corresponding path program 1 times [2024-11-09 07:34:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:19,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620698252] [2024-11-09 07:34:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:19,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:19,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:19,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620698252] [2024-11-09 07:34:19,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620698252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:19,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:19,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:34:19,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099507677] [2024-11-09 07:34:19,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:19,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:34:19,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:19,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:34:19,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:19,202 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:19,258 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2024-11-09 07:34:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:34:19,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-09 07:34:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:19,261 INFO L225 Difference]: With dead ends: 64 [2024-11-09 07:34:19,261 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 07:34:19,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:34:19,262 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 50 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:19,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 142 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 07:34:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2024-11-09 07:34:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-11-09 07:34:19,269 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 10 [2024-11-09 07:34:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:19,269 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-11-09 07:34:19,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-11-09 07:34:19,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 07:34:19,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:19,270 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:19,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 07:34:19,270 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:19,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1877967093, now seen corresponding path program 1 times [2024-11-09 07:34:19,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:19,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662521303] [2024-11-09 07:34:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:19,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662521303] [2024-11-09 07:34:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662521303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660104747] [2024-11-09 07:34:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:19,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:19,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:19,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:19,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 07:34:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:19,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 07:34:19,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:19,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:34:19,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 07:34:19,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 07:34:19,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:19,786 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:19,932 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:34:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:19,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660104747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:19,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:19,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-09 07:34:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892610281] [2024-11-09 07:34:19,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:19,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 07:34:19,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 07:34:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:34:19,956 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:20,161 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2024-11-09 07:34:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:34:20,162 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 07:34:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:20,163 INFO L225 Difference]: With dead ends: 65 [2024-11-09 07:34:20,164 INFO L226 Difference]: Without dead ends: 65 [2024-11-09 07:34:20,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-09 07:34:20,165 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 32 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:20,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 263 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:20,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-09 07:34:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2024-11-09 07:34:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 56 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-11-09 07:34:20,173 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 12 [2024-11-09 07:34:20,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:20,173 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-11-09 07:34:20,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-11-09 07:34:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 07:34:20,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:20,173 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:20,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:34:20,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:20,374 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:20,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1541125410, now seen corresponding path program 1 times [2024-11-09 07:34:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:20,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300242832] [2024-11-09 07:34:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:20,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:20,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:20,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300242832] [2024-11-09 07:34:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300242832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342967851] [2024-11-09 07:34:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:20,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:20,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:20,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:20,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 07:34:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:20,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 07:34:20,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:20,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:20,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342967851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:20,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:20,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 07:34:20,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380711767] [2024-11-09 07:34:20,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:20,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:34:20,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:20,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:34:20,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:34:20,612 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:20,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:20,771 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2024-11-09 07:34:20,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:34:20,772 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 07:34:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:20,773 INFO L225 Difference]: With dead ends: 78 [2024-11-09 07:34:20,773 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 07:34:20,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-09 07:34:20,773 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 89 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:20,774 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 235 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:20,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 07:34:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 61. [2024-11-09 07:34:20,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-09 07:34:20,777 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 14 [2024-11-09 07:34:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:20,777 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-09 07:34:20,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:20,777 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-09 07:34:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 07:34:20,778 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:20,778 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:20,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 07:34:20,978 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,SelfDestructingSolverStorable7 [2024-11-09 07:34:20,979 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:20,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash 272080406, now seen corresponding path program 1 times [2024-11-09 07:34:20,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:20,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212204800] [2024-11-09 07:34:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:21,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212204800] [2024-11-09 07:34:21,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212204800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:21,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764800159] [2024-11-09 07:34:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:21,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:21,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:21,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 07:34:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:21,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:34:21,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:21,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:34:21,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764800159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:21,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:34:21,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2024-11-09 07:34:21,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719034504] [2024-11-09 07:34:21,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:21,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:34:21,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:21,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:34:21,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-09 07:34:21,247 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:21,313 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-11-09 07:34:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:34:21,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 07:34:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:21,314 INFO L225 Difference]: With dead ends: 60 [2024-11-09 07:34:21,314 INFO L226 Difference]: Without dead ends: 60 [2024-11-09 07:34:21,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:34:21,315 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 30 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:21,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 133 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-09 07:34:21,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-09 07:34:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 59 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2024-11-09 07:34:21,318 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 15 [2024-11-09 07:34:21,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:21,318 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2024-11-09 07:34:21,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,318 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2024-11-09 07:34:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:34:21,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:21,318 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:21,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 07:34:21,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:21,523 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:21,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:21,524 INFO L85 PathProgramCache]: Analyzing trace with hash -155442002, now seen corresponding path program 1 times [2024-11-09 07:34:21,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:21,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602057435] [2024-11-09 07:34:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:21,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:21,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:21,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602057435] [2024-11-09 07:34:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602057435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:21,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:21,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:34:21,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779808150] [2024-11-09 07:34:21,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:21,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:34:21,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:34:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:34:21,569 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:21,588 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-09 07:34:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:34:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 07:34:21,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:21,589 INFO L225 Difference]: With dead ends: 58 [2024-11-09 07:34:21,589 INFO L226 Difference]: Without dead ends: 58 [2024-11-09 07:34:21,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:34:21,590 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 5 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:21,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 65 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-09 07:34:21,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-09 07:34:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.446808510638298) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2024-11-09 07:34:21,597 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 16 [2024-11-09 07:34:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:21,598 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2024-11-09 07:34:21,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2024-11-09 07:34:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:34:21,598 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:21,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:21,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 07:34:21,598 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:21,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash -155442001, now seen corresponding path program 1 times [2024-11-09 07:34:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:21,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248069439] [2024-11-09 07:34:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:21,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248069439] [2024-11-09 07:34:21,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248069439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:21,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:21,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:34:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568601852] [2024-11-09 07:34:21,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:21,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:34:21,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:21,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:34:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:21,691 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:21,721 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2024-11-09 07:34:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:34:21,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 07:34:21,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:21,724 INFO L225 Difference]: With dead ends: 63 [2024-11-09 07:34:21,725 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 07:34:21,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:21,725 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 1 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:21,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 119 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:21,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 07:34:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-09 07:34:21,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2024-11-09 07:34:21,729 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 16 [2024-11-09 07:34:21,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:21,730 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2024-11-09 07:34:21,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2024-11-09 07:34:21,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 07:34:21,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:21,730 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:21,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 07:34:21,731 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:21,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash -742248015, now seen corresponding path program 1 times [2024-11-09 07:34:21,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:21,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410757264] [2024-11-09 07:34:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:21,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:21,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410757264] [2024-11-09 07:34:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410757264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718240174] [2024-11-09 07:34:21,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:21,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:21,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:21,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:21,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 07:34:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:21,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:34:21,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:21,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 07:34:21,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:34:21,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-09 07:34:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:22,054 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:34:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718240174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:22,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:34:22,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2024-11-09 07:34:22,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55699801] [2024-11-09 07:34:22,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:22,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:34:22,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:22,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:34:22,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:34:22,055 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:22,076 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-11-09 07:34:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:34:22,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 07:34:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:22,077 INFO L225 Difference]: With dead ends: 62 [2024-11-09 07:34:22,077 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 07:34:22,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:34:22,077 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:22,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 07:34:22,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2024-11-09 07:34:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 47 states have (on average 1.425531914893617) internal successors, (67), 56 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-11-09 07:34:22,079 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 16 [2024-11-09 07:34:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:22,079 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-11-09 07:34:22,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-11-09 07:34:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 07:34:22,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:22,080 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:22,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:34:22,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:22,281 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:22,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash -907528666, now seen corresponding path program 1 times [2024-11-09 07:34:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:22,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053845874] [2024-11-09 07:34:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053845874] [2024-11-09 07:34:22,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053845874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038834390] [2024-11-09 07:34:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:22,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:22,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:22,482 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:22,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 07:34:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:22,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 07:34:22,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:22,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 07:34:22,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-09 07:34:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:34:22,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:34:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038834390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:22,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:34:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2024-11-09 07:34:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936108534] [2024-11-09 07:34:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:22,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:34:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:34:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:34:22,694 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:22,742 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2024-11-09 07:34:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:34:22,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 07:34:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:22,743 INFO L225 Difference]: With dead ends: 56 [2024-11-09 07:34:22,743 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 07:34:22,743 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:34:22,744 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:22,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 100 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 07:34:22,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-09 07:34:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2024-11-09 07:34:22,745 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 18 [2024-11-09 07:34:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:22,746 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2024-11-09 07:34:22,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2024-11-09 07:34:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:34:22,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:22,746 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:22,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 07:34:22,950 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,SelfDestructingSolverStorable12 [2024-11-09 07:34:22,951 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:22,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash -797898659, now seen corresponding path program 1 times [2024-11-09 07:34:22,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:22,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995154157] [2024-11-09 07:34:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:22,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995154157] [2024-11-09 07:34:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995154157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:22,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:22,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:34:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766095058] [2024-11-09 07:34:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:22,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:34:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:34:22,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:22,998 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:23,043 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-09 07:34:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:34:23,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 07:34:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:23,044 INFO L225 Difference]: With dead ends: 53 [2024-11-09 07:34:23,044 INFO L226 Difference]: Without dead ends: 53 [2024-11-09 07:34:23,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:34:23,045 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 36 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:23,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 74 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-09 07:34:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-09 07:34:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 52 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2024-11-09 07:34:23,047 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 19 [2024-11-09 07:34:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:23,047 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2024-11-09 07:34:23,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2024-11-09 07:34:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 07:34:23,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:23,048 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:23,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 07:34:23,048 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:23,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:23,048 INFO L85 PathProgramCache]: Analyzing trace with hash -797898658, now seen corresponding path program 1 times [2024-11-09 07:34:23,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:23,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059011528] [2024-11-09 07:34:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059011528] [2024-11-09 07:34:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059011528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479371675] [2024-11-09 07:34:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:23,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:23,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:23,160 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:23,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 07:34:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:23,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:34:23,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:23,289 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:23,346 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 20 treesize of output 16 [2024-11-09 07:34:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:23,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479371675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:23,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:23,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-09 07:34:23,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725778382] [2024-11-09 07:34:23,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:23,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:34:23,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:34:23,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:34:23,358 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:23,494 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-09 07:34:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:34:23,495 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 07:34:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:23,495 INFO L225 Difference]: With dead ends: 71 [2024-11-09 07:34:23,495 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 07:34:23,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:34:23,497 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:23,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 168 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 07:34:23,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2024-11-09 07:34:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 57 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2024-11-09 07:34:23,500 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 19 [2024-11-09 07:34:23,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:23,500 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2024-11-09 07:34:23,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2024-11-09 07:34:23,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:34:23,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:23,503 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] [2024-11-09 07:34:23,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:23,703 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,SelfDestructingSolverStorable14 [2024-11-09 07:34:23,704 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:23,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2019918523, now seen corresponding path program 1 times [2024-11-09 07:34:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:23,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553862607] [2024-11-09 07:34:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:23,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:23,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553862607] [2024-11-09 07:34:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553862607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:23,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:34:23,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924241564] [2024-11-09 07:34:23,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:23,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:34:23,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:34:23,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:23,768 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:23,783 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2024-11-09 07:34:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:34:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 07:34:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:23,784 INFO L225 Difference]: With dead ends: 101 [2024-11-09 07:34:23,784 INFO L226 Difference]: Without dead ends: 101 [2024-11-09 07:34:23,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:23,785 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:23,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 122 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-09 07:34:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2024-11-09 07:34:23,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.275) internal successors, (102), 85 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2024-11-09 07:34:23,789 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 21 [2024-11-09 07:34:23,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:23,790 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2024-11-09 07:34:23,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:23,790 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2024-11-09 07:34:23,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:34:23,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:23,790 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] [2024-11-09 07:34:23,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 07:34:23,790 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:23,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2018536375, now seen corresponding path program 1 times [2024-11-09 07:34:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:23,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510589235] [2024-11-09 07:34:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:24,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510589235] [2024-11-09 07:34:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510589235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:24,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913508002] [2024-11-09 07:34:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:24,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:24,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:24,112 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:24,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 07:34:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:24,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 07:34:24,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:24,287 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 17 treesize of output 13 [2024-11-09 07:34:24,418 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-09 07:34:24,418 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 21 treesize of output 10 [2024-11-09 07:34:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:24,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:24,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-09 07:34:24,503 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 18 treesize of output 16 [2024-11-09 07:34:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913508002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:24,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:24,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2024-11-09 07:34:24,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88982551] [2024-11-09 07:34:24,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:24,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-09 07:34:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:24,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-09 07:34:24,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2024-11-09 07:34:24,632 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:25,489 INFO L93 Difference]: Finished difference Result 151 states and 177 transitions. [2024-11-09 07:34:25,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 07:34:25,489 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 07:34:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:25,491 INFO L225 Difference]: With dead ends: 151 [2024-11-09 07:34:25,491 INFO L226 Difference]: Without dead ends: 151 [2024-11-09 07:34:25,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=273, Invalid=1707, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 07:34:25,492 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 221 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:25,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 389 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:34:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-09 07:34:25,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2024-11-09 07:34:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 117 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2024-11-09 07:34:25,497 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 21 [2024-11-09 07:34:25,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:25,497 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2024-11-09 07:34:25,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 28 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,498 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2024-11-09 07:34:25,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 07:34:25,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:25,501 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] [2024-11-09 07:34:25,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 07:34:25,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:25,702 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:25,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash 431570621, now seen corresponding path program 1 times [2024-11-09 07:34:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177951001] [2024-11-09 07:34:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:25,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:25,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:25,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:25,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177951001] [2024-11-09 07:34:25,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177951001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:25,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:25,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:34:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445552058] [2024-11-09 07:34:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:25,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:34:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:34:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:25,766 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:25,780 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2024-11-09 07:34:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:34:25,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 07:34:25,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:25,781 INFO L225 Difference]: With dead ends: 129 [2024-11-09 07:34:25,781 INFO L226 Difference]: Without dead ends: 129 [2024-11-09 07:34:25,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:25,782 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 24 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:25,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 95 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:25,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-09 07:34:25,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 79. [2024-11-09 07:34:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 78 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2024-11-09 07:34:25,786 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 21 [2024-11-09 07:34:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:25,786 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2024-11-09 07:34:25,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2024-11-09 07:34:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:34:25,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:25,786 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] [2024-11-09 07:34:25,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-09 07:34:25,787 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:25,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1849883305, now seen corresponding path program 1 times [2024-11-09 07:34:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474680401] [2024-11-09 07:34:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474680401] [2024-11-09 07:34:25,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474680401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:25,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:25,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:34:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866451137] [2024-11-09 07:34:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:25,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:34:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:25,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:34:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:34:25,850 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:25,888 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2024-11-09 07:34:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:34:25,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 07:34:25,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:25,889 INFO L225 Difference]: With dead ends: 78 [2024-11-09 07:34:25,889 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 07:34:25,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:34:25,890 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:25,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 117 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 07:34:25,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-09 07:34:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.273972602739726) internal successors, (93), 77 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions. [2024-11-09 07:34:25,892 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 22 [2024-11-09 07:34:25,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:25,892 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions. [2024-11-09 07:34:25,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2024-11-09 07:34:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 07:34:25,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:25,892 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] [2024-11-09 07:34:25,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-09 07:34:25,893 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:25,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1849883304, now seen corresponding path program 1 times [2024-11-09 07:34:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:25,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995215607] [2024-11-09 07:34:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:25,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:26,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:26,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995215607] [2024-11-09 07:34:26,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995215607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:26,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:26,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:34:26,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824838686] [2024-11-09 07:34:26,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:26,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:34:26,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:26,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:34:26,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:34:26,070 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:26,148 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2024-11-09 07:34:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:34:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 07:34:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:26,149 INFO L225 Difference]: With dead ends: 85 [2024-11-09 07:34:26,149 INFO L226 Difference]: Without dead ends: 85 [2024-11-09 07:34:26,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:34:26,150 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:26,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 161 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-09 07:34:26,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2024-11-09 07:34:26,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 79 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-09 07:34:26,152 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 22 [2024-11-09 07:34:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:26,152 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-09 07:34:26,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:26,152 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-09 07:34:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:34:26,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:26,153 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] [2024-11-09 07:34:26,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 07:34:26,153 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:26,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:26,153 INFO L85 PathProgramCache]: Analyzing trace with hash -76161491, now seen corresponding path program 2 times [2024-11-09 07:34:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:26,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756222799] [2024-11-09 07:34:26,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:26,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:26,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:26,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756222799] [2024-11-09 07:34:26,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756222799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:26,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419838520] [2024-11-09 07:34:26,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:26,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:26,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:26,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 07:34:26,582 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:34:26,583 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:26,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 07:34:26,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:26,703 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 [2024-11-09 07:34:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:26,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:26,804 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 18 treesize of output 16 [2024-11-09 07:34:26,806 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 20 treesize of output 16 [2024-11-09 07:34:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:26,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419838520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:26,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:26,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 29 [2024-11-09 07:34:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19115793] [2024-11-09 07:34:26,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:26,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 07:34:26,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 07:34:26,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2024-11-09 07:34:26,936 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:28,066 INFO L93 Difference]: Finished difference Result 209 states and 243 transitions. [2024-11-09 07:34:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:34:28,067 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 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 27 [2024-11-09 07:34:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:28,067 INFO L225 Difference]: With dead ends: 209 [2024-11-09 07:34:28,068 INFO L226 Difference]: Without dead ends: 209 [2024-11-09 07:34:28,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=308, Invalid=2662, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 07:34:28,069 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 196 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:28,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 961 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:34:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-09 07:34:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 124. [2024-11-09 07:34:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 119 states have (on average 1.2436974789915967) internal successors, (148), 123 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2024-11-09 07:34:28,072 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 27 [2024-11-09 07:34:28,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:28,072 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2024-11-09 07:34:28,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2024-11-09 07:34:28,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:34:28,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:28,072 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:28,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 07:34:28,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 07:34:28,274 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:28,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2028013477, now seen corresponding path program 1 times [2024-11-09 07:34:28,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:28,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125910021] [2024-11-09 07:34:28,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:28,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:28,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:28,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125910021] [2024-11-09 07:34:28,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125910021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:28,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:28,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:34:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168083080] [2024-11-09 07:34:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:28,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:34:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:28,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:34:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:28,350 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:28,369 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-09 07:34:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:34:28,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-09 07:34:28,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:28,371 INFO L225 Difference]: With dead ends: 183 [2024-11-09 07:34:28,371 INFO L226 Difference]: Without dead ends: 183 [2024-11-09 07:34:28,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:34:28,372 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:28,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 149 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-09 07:34:28,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2024-11-09 07:34:28,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 167 states have (on average 1.2275449101796407) internal successors, (205), 171 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2024-11-09 07:34:28,375 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 28 [2024-11-09 07:34:28,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:28,375 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2024-11-09 07:34:28,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2024-11-09 07:34:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:34:28,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:28,376 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:28,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 07:34:28,377 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:28,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1893999971, now seen corresponding path program 1 times [2024-11-09 07:34:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:28,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87914617] [2024-11-09 07:34:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:28,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87914617] [2024-11-09 07:34:28,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87914617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:28,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512883888] [2024-11-09 07:34:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:28,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:28,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:28,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:28,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 07:34:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:28,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:34:28,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:28,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:34:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:28,647 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:34:28,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512883888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:28,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:34:28,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-09 07:34:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910209589] [2024-11-09 07:34:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:28,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:34:28,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:34:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:34:28,648 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:28,694 INFO L93 Difference]: Finished difference Result 242 states and 283 transitions. [2024-11-09 07:34:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 07:34:28,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-09 07:34:28,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:28,698 INFO L225 Difference]: With dead ends: 242 [2024-11-09 07:34:28,699 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 07:34:28,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:34:28,699 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:28,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 228 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 07:34:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 198. [2024-11-09 07:34:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 193 states have (on average 1.217616580310881) internal successors, (235), 197 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 235 transitions. [2024-11-09 07:34:28,702 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 235 transitions. Word has length 28 [2024-11-09 07:34:28,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:28,703 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 235 transitions. [2024-11-09 07:34:28,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:28,703 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 235 transitions. [2024-11-09 07:34:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-09 07:34:28,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:28,703 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:28,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 07:34:28,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:28,904 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:28,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:28,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2034548581, now seen corresponding path program 1 times [2024-11-09 07:34:28,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:28,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709924008] [2024-11-09 07:34:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:28,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:29,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709924008] [2024-11-09 07:34:29,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709924008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:29,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660560705] [2024-11-09 07:34:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:29,019 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:29,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 07:34:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:29,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 07:34:29,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:29,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:34:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:29,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:34:29,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660560705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:29,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:34:29,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 16 [2024-11-09 07:34:29,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668739818] [2024-11-09 07:34:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:29,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:34:29,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:29,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:34:29,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-09 07:34:29,187 INFO L87 Difference]: Start difference. First operand 198 states and 235 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:29,256 INFO L93 Difference]: Finished difference Result 264 states and 312 transitions. [2024-11-09 07:34:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:34:29,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-09 07:34:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:29,257 INFO L225 Difference]: With dead ends: 264 [2024-11-09 07:34:29,257 INFO L226 Difference]: Without dead ends: 264 [2024-11-09 07:34:29,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-09 07:34:29,258 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 24 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:29,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 239 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:29,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-09 07:34:29,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 185. [2024-11-09 07:34:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.25) internal successors, (225), 184 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 225 transitions. [2024-11-09 07:34:29,266 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 225 transitions. Word has length 28 [2024-11-09 07:34:29,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:29,266 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 225 transitions. [2024-11-09 07:34:29,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 225 transitions. [2024-11-09 07:34:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:34:29,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:29,267 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] [2024-11-09 07:34:29,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 07:34:29,467 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,SelfDestructingSolverStorable23 [2024-11-09 07:34:29,467 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:29,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1604800870, now seen corresponding path program 1 times [2024-11-09 07:34:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897342358] [2024-11-09 07:34:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:29,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:29,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897342358] [2024-11-09 07:34:29,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897342358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:34:29,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:34:29,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:34:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268250855] [2024-11-09 07:34:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:34:29,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:34:29,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:34:29,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:29,556 INFO L87 Difference]: Start difference. First operand 185 states and 225 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:29,574 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2024-11-09 07:34:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:34:29,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2024-11-09 07:34:29,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:29,575 INFO L225 Difference]: With dead ends: 184 [2024-11-09 07:34:29,575 INFO L226 Difference]: Without dead ends: 136 [2024-11-09 07:34:29,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:34:29,576 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:29,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 64 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:34:29,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-09 07:34:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 131. [2024-11-09 07:34:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 127 states have (on average 1.1732283464566928) internal successors, (149), 130 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2024-11-09 07:34:29,578 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 29 [2024-11-09 07:34:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:29,578 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2024-11-09 07:34:29,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:29,579 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2024-11-09 07:34:29,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 07:34:29,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:29,579 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:29,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-09 07:34:29,579 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:29,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:29,580 INFO L85 PathProgramCache]: Analyzing trace with hash -36199480, now seen corresponding path program 1 times [2024-11-09 07:34:29,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:29,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865686781] [2024-11-09 07:34:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:30,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865686781] [2024-11-09 07:34:30,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865686781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:30,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011794989] [2024-11-09 07:34:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:30,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:30,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:30,366 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:30,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 07:34:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:30,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 07:34:30,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:30,602 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 17 treesize of output 13 [2024-11-09 07:34:30,875 INFO L349 Elim1Store]: treesize reduction 11, result has 47.6 percent of original size [2024-11-09 07:34:30,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 20 [2024-11-09 07:34:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:30,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:31,066 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 31 [2024-11-09 07:34:31,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:34:31,074 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 37 treesize of output 31 [2024-11-09 07:34:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:31,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011794989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:31,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:31,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 37 [2024-11-09 07:34:31,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973881225] [2024-11-09 07:34:31,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:31,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 07:34:31,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 07:34:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 07:34:31,288 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:32,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:32,332 INFO L93 Difference]: Finished difference Result 197 states and 218 transitions. [2024-11-09 07:34:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 07:34:32,333 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 0 states have call successors, (0), 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 29 [2024-11-09 07:34:32,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:32,333 INFO L225 Difference]: With dead ends: 197 [2024-11-09 07:34:32,333 INFO L226 Difference]: Without dead ends: 177 [2024-11-09 07:34:32,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=393, Invalid=2913, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 07:34:32,334 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 132 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:32,335 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 401 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:34:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-09 07:34:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 149. [2024-11-09 07:34:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 145 states have (on average 1.1724137931034482) internal successors, (170), 148 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 170 transitions. [2024-11-09 07:34:32,337 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 170 transitions. Word has length 29 [2024-11-09 07:34:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:32,337 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 170 transitions. [2024-11-09 07:34:32,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.972972972972973) internal successors, (73), 37 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:32,337 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 170 transitions. [2024-11-09 07:34:32,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 07:34:32,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:32,338 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:32,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:32,542 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,SelfDestructingSolverStorable25 [2024-11-09 07:34:32,543 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:32,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1439125859, now seen corresponding path program 3 times [2024-11-09 07:34:32,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704494138] [2024-11-09 07:34:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:32,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:32,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704494138] [2024-11-09 07:34:32,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704494138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:32,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685008745] [2024-11-09 07:34:32,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:34:32,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:32,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:32,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:32,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 07:34:33,028 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 07:34:33,028 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:33,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-09 07:34:33,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:33,178 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 [2024-11-09 07:34:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:33,286 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:33,300 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 18 treesize of output 16 [2024-11-09 07:34:33,303 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 20 treesize of output 16 [2024-11-09 07:34:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:33,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685008745] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:33,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:33,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 34 [2024-11-09 07:34:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950579959] [2024-11-09 07:34:33,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:33,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 07:34:33,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 07:34:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:34:33,447 INFO L87 Difference]: Start difference. First operand 149 states and 170 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:34,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:34,547 INFO L93 Difference]: Finished difference Result 281 states and 310 transitions. [2024-11-09 07:34:34,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 07:34:34,548 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-09 07:34:34,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:34,549 INFO L225 Difference]: With dead ends: 281 [2024-11-09 07:34:34,549 INFO L226 Difference]: Without dead ends: 241 [2024-11-09 07:34:34,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=373, Invalid=3787, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 07:34:34,550 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 174 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:34,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 970 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 07:34:34,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-09 07:34:34,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 172. [2024-11-09 07:34:34,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 168 states have (on average 1.1607142857142858) internal successors, (195), 171 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 195 transitions. [2024-11-09 07:34:34,553 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 195 transitions. Word has length 33 [2024-11-09 07:34:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:34,553 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 195 transitions. [2024-11-09 07:34:34,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 195 transitions. [2024-11-09 07:34:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-09 07:34:34,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:34,554 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:34,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:34,757 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,SelfDestructingSolverStorable26 [2024-11-09 07:34:34,758 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:34,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash 722081790, now seen corresponding path program 2 times [2024-11-09 07:34:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:34,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16052541] [2024-11-09 07:34:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:34,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:35,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:35,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16052541] [2024-11-09 07:34:35,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16052541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:35,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677680699] [2024-11-09 07:34:35,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:35,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:35,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:35,403 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:35,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 07:34:35,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:34:35,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:35,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 07:34:35,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:35,643 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 17 treesize of output 13 [2024-11-09 07:34:36,616 INFO L349 Elim1Store]: treesize reduction 15, result has 51.6 percent of original size [2024-11-09 07:34:36,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 30 [2024-11-09 07:34:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 17 refuted. 2 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:36,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:37,147 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 53 treesize of output 47 [2024-11-09 07:34:37,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:34:37,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 46 [2024-11-09 07:34:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:37,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677680699] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:37,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:37,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 40 [2024-11-09 07:34:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471769086] [2024-11-09 07:34:37,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:37,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-09 07:34:37,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-09 07:34:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1400, Unknown=3, NotChecked=0, Total=1560 [2024-11-09 07:34:37,404 INFO L87 Difference]: Start difference. First operand 172 states and 195 transitions. Second operand has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:38,046 INFO L93 Difference]: Finished difference Result 243 states and 271 transitions. [2024-11-09 07:34:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 07:34:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 0 states have call successors, (0), 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 35 [2024-11-09 07:34:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:38,048 INFO L225 Difference]: With dead ends: 243 [2024-11-09 07:34:38,048 INFO L226 Difference]: Without dead ends: 230 [2024-11-09 07:34:38,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=353, Invalid=2724, Unknown=3, NotChecked=0, Total=3080 [2024-11-09 07:34:38,049 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 214 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:38,049 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 461 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:34:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-09 07:34:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 188. [2024-11-09 07:34:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 187 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2024-11-09 07:34:38,052 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 35 [2024-11-09 07:34:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:38,052 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2024-11-09 07:34:38,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.175) internal successors, (87), 40 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2024-11-09 07:34:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 07:34:38,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:38,052 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:34:38,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 07:34:38,252 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,SelfDestructingSolverStorable27 [2024-11-09 07:34:38,253 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:38,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:38,253 INFO L85 PathProgramCache]: Analyzing trace with hash 937802411, now seen corresponding path program 1 times [2024-11-09 07:34:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:38,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016343855] [2024-11-09 07:34:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:38,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:34:38,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016343855] [2024-11-09 07:34:38,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016343855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582688538] [2024-11-09 07:34:38,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:38,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:38,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:38,453 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:38,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 07:34:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:38,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:34:38,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:34:38,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:38,743 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 5 treesize of output 3 [2024-11-09 07:34:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:34:38,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582688538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:38,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:38,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2024-11-09 07:34:38,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339480939] [2024-11-09 07:34:38,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:38,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 07:34:38,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 07:34:38,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:34:38,762 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:38,905 INFO L93 Difference]: Finished difference Result 221 states and 245 transitions. [2024-11-09 07:34:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:34:38,906 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 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 36 [2024-11-09 07:34:38,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:38,906 INFO L225 Difference]: With dead ends: 221 [2024-11-09 07:34:38,907 INFO L226 Difference]: Without dead ends: 221 [2024-11-09 07:34:38,907 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2024-11-09 07:34:38,907 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 25 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:38,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 303 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:34:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-09 07:34:38,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 206. [2024-11-09 07:34:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.1485148514851484) internal successors, (232), 205 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 232 transitions. [2024-11-09 07:34:38,910 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 232 transitions. Word has length 36 [2024-11-09 07:34:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:38,910 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 232 transitions. [2024-11-09 07:34:38,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 232 transitions. [2024-11-09 07:34:38,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-09 07:34:38,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:38,911 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:38,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:39,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:39,115 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:39,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:39,115 INFO L85 PathProgramCache]: Analyzing trace with hash 824829273, now seen corresponding path program 4 times [2024-11-09 07:34:39,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:39,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388311472] [2024-11-09 07:34:39,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:39,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:39,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:39,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388311472] [2024-11-09 07:34:39,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388311472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:39,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589965868] [2024-11-09 07:34:39,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:34:39,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:39,536 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:39,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 07:34:39,631 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:34:39,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:39,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-09 07:34:39,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:39,780 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 [2024-11-09 07:34:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:39,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:39,901 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 18 treesize of output 16 [2024-11-09 07:34:39,902 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 20 treesize of output 16 [2024-11-09 07:34:40,050 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:40,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589965868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:40,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:40,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2024-11-09 07:34:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152277448] [2024-11-09 07:34:40,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:40,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-09 07:34:40,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:40,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-09 07:34:40,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1374, Unknown=0, NotChecked=0, Total=1482 [2024-11-09 07:34:40,052 INFO L87 Difference]: Start difference. First operand 206 states and 232 transitions. Second operand has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:41,393 INFO L93 Difference]: Finished difference Result 372 states and 407 transitions. [2024-11-09 07:34:41,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 07:34:41,393 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-09 07:34:41,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:41,394 INFO L225 Difference]: With dead ends: 372 [2024-11-09 07:34:41,394 INFO L226 Difference]: Without dead ends: 328 [2024-11-09 07:34:41,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=444, Invalid=5106, Unknown=0, NotChecked=0, Total=5550 [2024-11-09 07:34:41,396 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 202 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:41,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1446 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 07:34:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-09 07:34:41,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 235. [2024-11-09 07:34:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 231 states have (on average 1.1385281385281385) internal successors, (263), 234 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:41,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 263 transitions. [2024-11-09 07:34:41,400 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 263 transitions. Word has length 39 [2024-11-09 07:34:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:41,400 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 263 transitions. [2024-11-09 07:34:41,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.4615384615384617) internal successors, (96), 39 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 263 transitions. [2024-11-09 07:34:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 07:34:41,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:41,401 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:41,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 07:34:41,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:41,602 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:41,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1248486156, now seen corresponding path program 3 times [2024-11-09 07:34:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:41,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204643212] [2024-11-09 07:34:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:41,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:42,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204643212] [2024-11-09 07:34:42,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204643212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:42,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428635310] [2024-11-09 07:34:42,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:34:42,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:42,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:42,389 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:42,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 07:34:42,492 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 07:34:42,492 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:42,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 07:34:42,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:42,670 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 17 treesize of output 13 [2024-11-09 07:34:45,602 INFO L349 Elim1Store]: treesize reduction 19, result has 53.7 percent of original size [2024-11-09 07:34:45,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 40 [2024-11-09 07:34:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 18 proven. 31 refuted. 3 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:45,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:46,911 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 71 treesize of output 63 [2024-11-09 07:34:46,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:34:46,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 61 [2024-11-09 07:34:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:47,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428635310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:47,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:47,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 46 [2024-11-09 07:34:47,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583662289] [2024-11-09 07:34:47,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:47,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-09 07:34:47,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-09 07:34:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1831, Unknown=7, NotChecked=0, Total=2070 [2024-11-09 07:34:47,319 INFO L87 Difference]: Start difference. First operand 235 states and 263 transitions. Second operand has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:49,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:49,273 INFO L93 Difference]: Finished difference Result 330 states and 365 transitions. [2024-11-09 07:34:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 07:34:49,273 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-09 07:34:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:49,274 INFO L225 Difference]: With dead ends: 330 [2024-11-09 07:34:49,274 INFO L226 Difference]: Without dead ends: 315 [2024-11-09 07:34:49,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=490, Invalid=3661, Unknown=9, NotChecked=0, Total=4160 [2024-11-09 07:34:49,276 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 188 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:49,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 562 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:34:49,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-09 07:34:49,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 251. [2024-11-09 07:34:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 247 states have (on average 1.1417004048582995) internal successors, (282), 250 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 282 transitions. [2024-11-09 07:34:49,279 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 282 transitions. Word has length 41 [2024-11-09 07:34:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:49,279 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 282 transitions. [2024-11-09 07:34:49,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.1956521739130435) internal successors, (101), 46 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:49,279 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 282 transitions. [2024-11-09 07:34:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 07:34:49,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:49,280 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:49,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 07:34:49,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:49,480 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:49,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash -812436808, now seen corresponding path program 2 times [2024-11-09 07:34:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047189166] [2024-11-09 07:34:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:34:49,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:49,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047189166] [2024-11-09 07:34:49,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047189166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:49,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408203790] [2024-11-09 07:34:49,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:34:49,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:49,635 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:49,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 07:34:49,723 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:34:49,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:49,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 07:34:49,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:49,839 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 [2024-11-09 07:34:50,064 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:34:50,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:34:50,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2024-11-09 07:34:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:50,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:50,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-09 07:34:50,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-09 07:34:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408203790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:50,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:50,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 37 [2024-11-09 07:34:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023908889] [2024-11-09 07:34:50,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:50,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 07:34:50,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 07:34:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 07:34:50,501 INFO L87 Difference]: Start difference. First operand 251 states and 282 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:51,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:51,133 INFO L93 Difference]: Finished difference Result 311 states and 342 transitions. [2024-11-09 07:34:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 07:34:51,133 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 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 42 [2024-11-09 07:34:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:51,134 INFO L225 Difference]: With dead ends: 311 [2024-11-09 07:34:51,134 INFO L226 Difference]: Without dead ends: 284 [2024-11-09 07:34:51,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=377, Invalid=3045, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 07:34:51,135 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 97 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:51,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 436 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:34:51,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-09 07:34:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 240. [2024-11-09 07:34:51,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 236 states have (on average 1.1398305084745763) internal successors, (269), 239 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 269 transitions. [2024-11-09 07:34:51,139 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 269 transitions. Word has length 42 [2024-11-09 07:34:51,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:51,139 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 269 transitions. [2024-11-09 07:34:51,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:51,139 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 269 transitions. [2024-11-09 07:34:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 07:34:51,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:51,140 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:51,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 07:34:51,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:51,345 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:51,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1816217073, now seen corresponding path program 5 times [2024-11-09 07:34:51,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:51,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669324372] [2024-11-09 07:34:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 15 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:51,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669324372] [2024-11-09 07:34:51,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669324372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:51,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460735156] [2024-11-09 07:34:51,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 07:34:51,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:51,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:51,914 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:51,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 07:34:52,003 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 07:34:52,003 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:52,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-09 07:34:52,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:52,195 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 [2024-11-09 07:34:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:52,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:52,356 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 18 treesize of output 16 [2024-11-09 07:34:52,357 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 20 treesize of output 16 [2024-11-09 07:34:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:52,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460735156] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:52,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:52,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 44 [2024-11-09 07:34:52,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745182749] [2024-11-09 07:34:52,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:52,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 07:34:52,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 07:34:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1771, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 07:34:52,565 INFO L87 Difference]: Start difference. First operand 240 states and 269 transitions. Second operand has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:54,674 INFO L93 Difference]: Finished difference Result 429 states and 467 transitions. [2024-11-09 07:34:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 07:34:54,675 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-09 07:34:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:54,676 INFO L225 Difference]: With dead ends: 429 [2024-11-09 07:34:54,676 INFO L226 Difference]: Without dead ends: 381 [2024-11-09 07:34:54,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=519, Invalid=6621, Unknown=0, NotChecked=0, Total=7140 [2024-11-09 07:34:54,678 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 201 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 2616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:54,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1955 Invalid, 2616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:34:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-09 07:34:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 269. [2024-11-09 07:34:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 265 states have (on average 1.1320754716981132) internal successors, (300), 268 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 300 transitions. [2024-11-09 07:34:54,683 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 300 transitions. Word has length 45 [2024-11-09 07:34:54,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:54,683 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 300 transitions. [2024-11-09 07:34:54,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.5454545454545454) internal successors, (112), 44 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 300 transitions. [2024-11-09 07:34:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 07:34:54,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:54,684 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-09 07:34:54,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 07:34:54,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:54,885 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:54,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash -36105669, now seen corresponding path program 3 times [2024-11-09 07:34:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53277605] [2024-11-09 07:34:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:34:55,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53277605] [2024-11-09 07:34:55,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53277605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:55,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995935425] [2024-11-09 07:34:55,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 07:34:55,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:55,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:55,099 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:55,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 07:34:55,185 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 07:34:55,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:55,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 07:34:55,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:55,234 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 [2024-11-09 07:34:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 07:34:55,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:55,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-09 07:34:55,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-09 07:34:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 07:34:55,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995935425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:55,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:55,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 27 [2024-11-09 07:34:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693656842] [2024-11-09 07:34:55,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:55,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-09 07:34:55,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:55,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-09 07:34:55,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2024-11-09 07:34:55,364 INFO L87 Difference]: Start difference. First operand 269 states and 300 transitions. Second operand has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:55,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:55,856 INFO L93 Difference]: Finished difference Result 541 states and 581 transitions. [2024-11-09 07:34:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 07:34:55,857 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 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 46 [2024-11-09 07:34:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:55,858 INFO L225 Difference]: With dead ends: 541 [2024-11-09 07:34:55,858 INFO L226 Difference]: Without dead ends: 413 [2024-11-09 07:34:55,858 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=2579, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 07:34:55,859 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 116 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:55,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 459 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:34:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-09 07:34:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 320. [2024-11-09 07:34:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 316 states have (on average 1.1234177215189873) internal successors, (355), 319 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 355 transitions. [2024-11-09 07:34:55,865 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 355 transitions. Word has length 46 [2024-11-09 07:34:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:55,865 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 355 transitions. [2024-11-09 07:34:55,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.074074074074074) internal successors, (83), 27 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 355 transitions. [2024-11-09 07:34:55,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 07:34:55,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:55,866 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:34:55,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-09 07:34:56,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:56,067 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:34:56,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:34:56,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1769689770, now seen corresponding path program 4 times [2024-11-09 07:34:56,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:34:56,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613159266] [2024-11-09 07:34:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:34:56,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:34:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:34:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:34:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613159266] [2024-11-09 07:34:56,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613159266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:34:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978064518] [2024-11-09 07:34:56,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:34:56,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:34:56,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:34:56,920 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:34:56,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 07:34:57,032 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:34:57,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:34:57,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-09 07:34:57,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:34:57,287 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 17 treesize of output 13 [2024-11-09 07:34:57,858 INFO L349 Elim1Store]: treesize reduction 23, result has 54.9 percent of original size [2024-11-09 07:34:57,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 50 [2024-11-09 07:34:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:57,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:34:58,158 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 89 treesize of output 79 [2024-11-09 07:34:58,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 76 [2024-11-09 07:34:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 35 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:34:58,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978064518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:34:58,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:34:58,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 55 [2024-11-09 07:34:58,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363924035] [2024-11-09 07:34:58,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:34:58,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-09 07:34:58,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:34:58,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-09 07:34:58,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=2722, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 07:34:58,634 INFO L87 Difference]: Start difference. First operand 320 states and 355 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 55 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:34:59,977 INFO L93 Difference]: Finished difference Result 438 states and 480 transitions. [2024-11-09 07:34:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-09 07:34:59,978 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 55 states have internal predecessors, (120), 0 states have call successors, (0), 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 47 [2024-11-09 07:34:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:34:59,979 INFO L225 Difference]: With dead ends: 438 [2024-11-09 07:34:59,979 INFO L226 Difference]: Without dead ends: 406 [2024-11-09 07:34:59,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1577 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=532, Invalid=5474, Unknown=0, NotChecked=0, Total=6006 [2024-11-09 07:34:59,980 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 210 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:34:59,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 675 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:34:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-09 07:34:59,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 340. [2024-11-09 07:34:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 336 states have (on average 1.125) internal successors, (378), 339 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 378 transitions. [2024-11-09 07:34:59,990 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 378 transitions. Word has length 47 [2024-11-09 07:34:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:34:59,991 INFO L471 AbstractCegarLoop]: Abstraction has 340 states and 378 transitions. [2024-11-09 07:34:59,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 55 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:34:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 378 transitions. [2024-11-09 07:34:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-09 07:34:59,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:34:59,992 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:00,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 07:35:00,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-09 07:35:00,193 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:00,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:00,194 INFO L85 PathProgramCache]: Analyzing trace with hash -303894651, now seen corresponding path program 6 times [2024-11-09 07:35:00,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:00,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405287083] [2024-11-09 07:35:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:00,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:00,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:00,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405287083] [2024-11-09 07:35:00,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405287083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:00,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154854068] [2024-11-09 07:35:00,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 07:35:00,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:00,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:00,767 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:00,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 07:35:00,887 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 07:35:00,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:00,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-09 07:35:00,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:01,087 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 [2024-11-09 07:35:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:01,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:01,289 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 18 treesize of output 16 [2024-11-09 07:35:01,293 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 20 treesize of output 16 [2024-11-09 07:35:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:01,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154854068] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:01,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:01,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 49 [2024-11-09 07:35:01,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367571193] [2024-11-09 07:35:01,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:01,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 07:35:01,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 07:35:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2213, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 07:35:01,597 INFO L87 Difference]: Start difference. First operand 340 states and 378 transitions. Second operand has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:03,617 INFO L93 Difference]: Finished difference Result 574 states and 623 transitions. [2024-11-09 07:35:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-09 07:35:03,618 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-09 07:35:03,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:03,619 INFO L225 Difference]: With dead ends: 574 [2024-11-09 07:35:03,619 INFO L226 Difference]: Without dead ends: 513 [2024-11-09 07:35:03,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2001 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=604, Invalid=8326, Unknown=0, NotChecked=0, Total=8930 [2024-11-09 07:35:03,620 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 245 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:03,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1911 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 07:35:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-09 07:35:03,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 371. [2024-11-09 07:35:03,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 367 states have (on average 1.119891008174387) internal successors, (411), 370 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 411 transitions. [2024-11-09 07:35:03,626 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 411 transitions. Word has length 51 [2024-11-09 07:35:03,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:03,626 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 411 transitions. [2024-11-09 07:35:03,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:03,626 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 411 transitions. [2024-11-09 07:35:03,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 07:35:03,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:03,627 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:03,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-09 07:35:03,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-09 07:35:03,830 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:03,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -501472, now seen corresponding path program 5 times [2024-11-09 07:35:03,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:03,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511390111] [2024-11-09 07:35:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 30 proven. 84 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:35:05,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:05,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511390111] [2024-11-09 07:35:05,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511390111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:05,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921888866] [2024-11-09 07:35:05,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 07:35:05,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:05,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:05,030 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:05,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 07:35:05,143 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-09 07:35:05,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:05,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-09 07:35:05,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:05,407 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 17 treesize of output 13 [2024-11-09 07:35:06,186 INFO L349 Elim1Store]: treesize reduction 27, result has 55.7 percent of original size [2024-11-09 07:35:06,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 15 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 71 treesize of output 60 [2024-11-09 07:35:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 18 proven. 96 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:35:06,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:06,492 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 107 treesize of output 95 [2024-11-09 07:35:06,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 91 [2024-11-09 07:35:06,595 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-09 07:35:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 48 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:35:07,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921888866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:07,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:07,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 62 [2024-11-09 07:35:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672014109] [2024-11-09 07:35:07,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:07,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-09 07:35:07,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-09 07:35:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=3444, Unknown=0, NotChecked=0, Total=3782 [2024-11-09 07:35:07,054 INFO L87 Difference]: Start difference. First operand 371 states and 411 transitions. Second operand has 62 states, 62 states have (on average 2.193548387096774) internal successors, (136), 62 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:09,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:09,834 INFO L93 Difference]: Finished difference Result 525 states and 576 transitions. [2024-11-09 07:35:09,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-09 07:35:09,834 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.193548387096774) internal successors, (136), 62 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-09 07:35:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:09,835 INFO L225 Difference]: With dead ends: 525 [2024-11-09 07:35:09,835 INFO L226 Difference]: Without dead ends: 489 [2024-11-09 07:35:09,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2172 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=693, Invalid=7139, Unknown=0, NotChecked=0, Total=7832 [2024-11-09 07:35:09,836 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 244 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:09,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 741 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1125 Invalid, 2 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 07:35:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-09 07:35:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 391. [2024-11-09 07:35:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 387 states have (on average 1.1214470284237725) internal successors, (434), 390 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:09,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 434 transitions. [2024-11-09 07:35:09,841 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 434 transitions. Word has length 53 [2024-11-09 07:35:09,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:09,841 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 434 transitions. [2024-11-09 07:35:09,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.193548387096774) internal successors, (136), 62 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 434 transitions. [2024-11-09 07:35:09,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 07:35:09,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:09,842 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2024-11-09 07:35:09,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 07:35:10,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 07:35:10,043 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:10,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 918709098, now seen corresponding path program 1 times [2024-11-09 07:35:10,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:10,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304130927] [2024-11-09 07:35:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:10,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:35:10,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:10,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304130927] [2024-11-09 07:35:10,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304130927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:10,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350635555] [2024-11-09 07:35:10,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:10,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:10,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:10,211 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:10,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 07:35:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:10,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 07:35:10,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:35:10,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:10,797 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 07:35:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350635555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:10,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:10,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 34 [2024-11-09 07:35:10,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388416102] [2024-11-09 07:35:10,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:10,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-09 07:35:10,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-09 07:35:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=918, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:35:10,799 INFO L87 Difference]: Start difference. First operand 391 states and 434 transitions. Second operand has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:11,256 INFO L93 Difference]: Finished difference Result 455 states and 497 transitions. [2024-11-09 07:35:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-09 07:35:11,256 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-09 07:35:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:11,257 INFO L225 Difference]: With dead ends: 455 [2024-11-09 07:35:11,257 INFO L226 Difference]: Without dead ends: 422 [2024-11-09 07:35:11,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=625, Invalid=2455, Unknown=0, NotChecked=0, Total=3080 [2024-11-09 07:35:11,258 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 276 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:11,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 391 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:35:11,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-09 07:35:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 364. [2024-11-09 07:35:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 360 states have (on average 1.125) internal successors, (405), 363 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 405 transitions. [2024-11-09 07:35:11,261 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 405 transitions. Word has length 53 [2024-11-09 07:35:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:11,262 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 405 transitions. [2024-11-09 07:35:11,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.4705882352941178) internal successors, (118), 34 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:11,262 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 405 transitions. [2024-11-09 07:35:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-09 07:35:11,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:11,264 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:11,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-09 07:35:11,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:11,469 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:11,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:11,469 INFO L85 PathProgramCache]: Analyzing trace with hash -392214527, now seen corresponding path program 4 times [2024-11-09 07:35:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671358125] [2024-11-09 07:35:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:35:11,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671358125] [2024-11-09 07:35:11,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671358125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:11,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296656798] [2024-11-09 07:35:11,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 07:35:11,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:11,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:11,738 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:11,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 07:35:11,878 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 07:35:11,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:11,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 07:35:11,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:35:12,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:12,148 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 21 treesize of output 17 [2024-11-09 07:35:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:35:12,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296656798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:12,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:12,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2024-11-09 07:35:12,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570476429] [2024-11-09 07:35:12,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:12,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 07:35:12,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 07:35:12,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:35:12,252 INFO L87 Difference]: Start difference. First operand 364 states and 405 transitions. Second operand has 30 states, 29 states have (on average 3.586206896551724) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:12,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:12,417 INFO L93 Difference]: Finished difference Result 431 states and 472 transitions. [2024-11-09 07:35:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:35:12,417 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.586206896551724) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-09 07:35:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:12,418 INFO L225 Difference]: With dead ends: 431 [2024-11-09 07:35:12,418 INFO L226 Difference]: Without dead ends: 431 [2024-11-09 07:35:12,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 07:35:12,419 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 31 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:12,419 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 294 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:35:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2024-11-09 07:35:12,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 395. [2024-11-09 07:35:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 391 states have (on average 1.1176470588235294) internal successors, (437), 394 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 437 transitions. [2024-11-09 07:35:12,423 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 437 transitions. Word has length 54 [2024-11-09 07:35:12,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:12,423 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 437 transitions. [2024-11-09 07:35:12,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.586206896551724) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 437 transitions. [2024-11-09 07:35:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:35:12,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:12,424 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:12,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 07:35:12,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-09 07:35:12,625 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:12,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash -399530565, now seen corresponding path program 7 times [2024-11-09 07:35:12,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:12,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756768503] [2024-11-09 07:35:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:12,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 45 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:13,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:13,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756768503] [2024-11-09 07:35:13,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756768503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:13,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239403859] [2024-11-09 07:35:13,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:35:13,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:13,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:13,244 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:13,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 07:35:13,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:13,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-09 07:35:13,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:13,631 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 [2024-11-09 07:35:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:13,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:13,860 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 18 treesize of output 16 [2024-11-09 07:35:13,861 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 20 treesize of output 16 [2024-11-09 07:35:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 7 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:14,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239403859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:14,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:14,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 54 [2024-11-09 07:35:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017729474] [2024-11-09 07:35:14,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:14,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-09 07:35:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-09 07:35:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2706, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 07:35:14,146 INFO L87 Difference]: Start difference. First operand 395 states and 437 transitions. Second operand has 54 states, 54 states have (on average 2.6666666666666665) internal successors, (144), 54 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:16,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:16,376 INFO L93 Difference]: Finished difference Result 682 states and 737 transitions. [2024-11-09 07:35:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-09 07:35:16,376 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.6666666666666665) internal successors, (144), 54 states have internal predecessors, (144), 0 states have call successors, (0), 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 57 [2024-11-09 07:35:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:16,378 INFO L225 Difference]: With dead ends: 682 [2024-11-09 07:35:16,378 INFO L226 Difference]: Without dead ends: 617 [2024-11-09 07:35:16,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2471 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=693, Invalid=10227, Unknown=0, NotChecked=0, Total=10920 [2024-11-09 07:35:16,379 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 261 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:16,379 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 2330 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3296 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 07:35:16,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-09 07:35:16,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 432. [2024-11-09 07:35:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 428 states have (on average 1.1121495327102804) internal successors, (476), 431 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:16,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 476 transitions. [2024-11-09 07:35:16,385 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 476 transitions. Word has length 57 [2024-11-09 07:35:16,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:16,385 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 476 transitions. [2024-11-09 07:35:16,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.6666666666666665) internal successors, (144), 54 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 476 transitions. [2024-11-09 07:35:16,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:35:16,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:16,386 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:16,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 07:35:16,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-09 07:35:16,590 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:16,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash -309997482, now seen corresponding path program 6 times [2024-11-09 07:35:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:16,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758995096] [2024-11-09 07:35:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:16,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 41 proven. 113 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:35:18,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758995096] [2024-11-09 07:35:18,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758995096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:18,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259161867] [2024-11-09 07:35:18,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 07:35:18,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:18,042 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:18,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 07:35:18,210 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-09 07:35:18,210 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:18,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-09 07:35:18,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:18,589 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 16 treesize of output 12 [2024-11-09 07:35:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 21 proven. 133 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:35:19,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:19,526 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 125 treesize of output 111 [2024-11-09 07:35:19,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:35:19,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 132 treesize of output 106 [2024-11-09 07:35:20,410 WARN L672 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2024-11-09 07:35:20,468 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 91 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:35:20,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259161867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:20,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:20,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 29] total 67 [2024-11-09 07:35:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171436033] [2024-11-09 07:35:20,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:20,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-09 07:35:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-09 07:35:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=4031, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 07:35:20,470 INFO L87 Difference]: Start difference. First operand 432 states and 476 transitions. Second operand has 67 states, 67 states have (on average 2.2388059701492535) internal successors, (150), 67 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:21,824 INFO L93 Difference]: Finished difference Result 627 states and 687 transitions. [2024-11-09 07:35:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 07:35:21,825 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.2388059701492535) internal successors, (150), 67 states have internal predecessors, (150), 0 states have call successors, (0), 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 59 [2024-11-09 07:35:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:21,826 INFO L225 Difference]: With dead ends: 627 [2024-11-09 07:35:21,826 INFO L226 Difference]: Without dead ends: 587 [2024-11-09 07:35:21,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3039 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=811, Invalid=8891, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 07:35:21,827 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 294 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:21,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 792 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:35:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2024-11-09 07:35:21,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 452. [2024-11-09 07:35:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 448 states have (on average 1.1138392857142858) internal successors, (499), 451 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 499 transitions. [2024-11-09 07:35:21,832 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 499 transitions. Word has length 59 [2024-11-09 07:35:21,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:21,832 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 499 transitions. [2024-11-09 07:35:21,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.2388059701492535) internal successors, (150), 67 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 499 transitions. [2024-11-09 07:35:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:35:21,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:21,833 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:21,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-09 07:35:22,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-09 07:35:22,034 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:22,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:22,034 INFO L85 PathProgramCache]: Analyzing trace with hash 438252256, now seen corresponding path program 2 times [2024-11-09 07:35:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:22,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135782914] [2024-11-09 07:35:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:22,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135782914] [2024-11-09 07:35:22,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135782914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:22,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862875802] [2024-11-09 07:35:22,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:35:22,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:22,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:22,546 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:22,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 07:35:22,660 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:35:22,660 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:22,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 07:35:22,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:22,983 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 17 treesize of output 13 [2024-11-09 07:35:23,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:35:23,180 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 21 treesize of output 17 [2024-11-09 07:35:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:23,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:23,575 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 18 treesize of output 16 [2024-11-09 07:35:23,577 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 20 treesize of output 16 [2024-11-09 07:35:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:24,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862875802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:24,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:24,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 21] total 58 [2024-11-09 07:35:24,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074485599] [2024-11-09 07:35:24,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:24,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-09 07:35:24,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-09 07:35:24,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2985, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 07:35:24,086 INFO L87 Difference]: Start difference. First operand 452 states and 499 transitions. Second operand has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 58 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:26,014 INFO L93 Difference]: Finished difference Result 568 states and 617 transitions. [2024-11-09 07:35:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 07:35:26,014 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 58 states have internal predecessors, (163), 0 states have call successors, (0), 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 59 [2024-11-09 07:35:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:26,015 INFO L225 Difference]: With dead ends: 568 [2024-11-09 07:35:26,015 INFO L226 Difference]: Without dead ends: 560 [2024-11-09 07:35:26,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1031, Invalid=8671, Unknown=0, NotChecked=0, Total=9702 [2024-11-09 07:35:26,016 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 269 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:26,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1159 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 07:35:26,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2024-11-09 07:35:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 458. [2024-11-09 07:35:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 454 states have (on average 1.1167400881057268) internal successors, (507), 457 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 507 transitions. [2024-11-09 07:35:26,021 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 507 transitions. Word has length 59 [2024-11-09 07:35:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:26,022 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 507 transitions. [2024-11-09 07:35:26,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 58 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:26,022 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 507 transitions. [2024-11-09 07:35:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 07:35:26,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:26,022 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:26,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 07:35:26,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:26,223 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:26,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:26,223 INFO L85 PathProgramCache]: Analyzing trace with hash -444143730, now seen corresponding path program 5 times [2024-11-09 07:35:26,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:26,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253353775] [2024-11-09 07:35:26,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 07:35:26,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253353775] [2024-11-09 07:35:26,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253353775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:26,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442032543] [2024-11-09 07:35:26,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 07:35:26,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:26,506 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:26,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 07:35:26,634 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-09 07:35:26,635 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:26,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 07:35:26,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:26,685 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 [2024-11-09 07:35:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:35:26,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:26,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-09 07:35:26,798 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 16 treesize of output 12 [2024-11-09 07:35:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-09 07:35:26,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442032543] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:26,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:26,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 30 [2024-11-09 07:35:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625870111] [2024-11-09 07:35:26,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:26,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 07:35:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 07:35:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2024-11-09 07:35:26,842 INFO L87 Difference]: Start difference. First operand 458 states and 507 transitions. Second operand has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:27,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:27,518 INFO L93 Difference]: Finished difference Result 856 states and 918 transitions. [2024-11-09 07:35:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-09 07:35:27,518 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-09 07:35:27,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:27,520 INFO L225 Difference]: With dead ends: 856 [2024-11-09 07:35:27,520 INFO L226 Difference]: Without dead ends: 649 [2024-11-09 07:35:27,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=3922, Unknown=0, NotChecked=0, Total=4290 [2024-11-09 07:35:27,521 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 131 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:27,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 566 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:35:27,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-09 07:35:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 519. [2024-11-09 07:35:27,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 515 states have (on average 1.112621359223301) internal successors, (573), 518 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 573 transitions. [2024-11-09 07:35:27,527 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 573 transitions. Word has length 60 [2024-11-09 07:35:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:27,527 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 573 transitions. [2024-11-09 07:35:27,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 573 transitions. [2024-11-09 07:35:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 07:35:27,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:27,529 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:27,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 07:35:27,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:27,729 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:27,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash -243663695, now seen corresponding path program 8 times [2024-11-09 07:35:27,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:27,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627636798] [2024-11-09 07:35:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:27,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 66 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:28,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627636798] [2024-11-09 07:35:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627636798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:28,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726660605] [2024-11-09 07:35:28,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:35:28,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:28,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:28,458 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:28,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 07:35:28,575 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:35:28,575 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:35:28,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-09 07:35:28,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:28,881 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 [2024-11-09 07:35:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 8 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:29,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:35:29,159 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 18 treesize of output 16 [2024-11-09 07:35:29,160 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 20 treesize of output 16 [2024-11-09 07:35:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 8 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:35:29,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726660605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:35:29,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:35:29,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 25] total 59 [2024-11-09 07:35:29,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539038128] [2024-11-09 07:35:29,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:35:29,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-09 07:35:29,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:35:29,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-09 07:35:29,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3250, Unknown=0, NotChecked=0, Total=3422 [2024-11-09 07:35:29,501 INFO L87 Difference]: Start difference. First operand 519 states and 573 transitions. Second operand has 59 states, 59 states have (on average 2.711864406779661) internal successors, (160), 59 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:35:32,571 INFO L93 Difference]: Finished difference Result 866 states and 937 transitions. [2024-11-09 07:35:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-09 07:35:32,571 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.711864406779661) internal successors, (160), 59 states have internal predecessors, (160), 0 states have call successors, (0), 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 63 [2024-11-09 07:35:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:35:32,573 INFO L225 Difference]: With dead ends: 866 [2024-11-09 07:35:32,573 INFO L226 Difference]: Without dead ends: 791 [2024-11-09 07:35:32,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2814 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=786, Invalid=12324, Unknown=0, NotChecked=0, Total=13110 [2024-11-09 07:35:32,574 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 271 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 4192 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 4206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:35:32,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2929 Invalid, 4206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4192 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 07:35:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-09 07:35:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 558. [2024-11-09 07:35:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 554 states have (on average 1.108303249097473) internal successors, (614), 557 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:32,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 614 transitions. [2024-11-09 07:35:32,580 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 614 transitions. Word has length 63 [2024-11-09 07:35:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:35:32,580 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 614 transitions. [2024-11-09 07:35:32,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.711864406779661) internal successors, (160), 59 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:35:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 614 transitions. [2024-11-09 07:35:32,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 07:35:32,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:35:32,581 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:35:32,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 07:35:32,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:32,782 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-11-09 07:35:32,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:35:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -271001524, now seen corresponding path program 7 times [2024-11-09 07:35:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:35:32,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068668934] [2024-11-09 07:35:32,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:35:32,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:35:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 54 proven. 146 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 07:35:34,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:35:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068668934] [2024-11-09 07:35:34,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068668934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:35:34,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721353931] [2024-11-09 07:35:34,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 07:35:34,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:35:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:35:34,628 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 07:35:34,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 07:35:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:35:34,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-09 07:35:34,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:35:35,150 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 17 treesize of output 13