./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:53:10,963 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:53:11,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-19 06:53:11,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:53:11,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:53:11,072 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:53:11,073 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:53:11,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:53:11,074 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:53:11,075 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:53:11,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:53:11,076 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:53:11,076 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:53:11,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:53:11,078 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:53:11,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:53:11,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:53:11,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:53:11,080 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:53:11,080 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:53:11,080 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:53:11,084 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:53:11,084 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:53:11,085 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:53:11,085 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:53:11,085 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:53:11,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:53:11,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:53:11,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:53:11,086 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:53:11,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:53:11,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:53:11,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:53:11,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:53:11,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:53:11,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:53:11,088 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:53:11,088 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:53:11,088 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:53:11,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ac435f9525efba17674735293ae04d2f777a83ec5e1b38ed3aaaf0148b05726 [2024-11-19 06:53:11,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:53:11,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:53:11,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:53:11,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:53:11,399 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:53:11,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-lst-shared.i [2024-11-19 06:53:12,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:53:13,225 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:53:13,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-lst-shared.i [2024-11-19 06:53:13,250 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c052bbb9c/817c97b7870a45678eb72ad8d92ceb3b/FLAG579bd1d7b [2024-11-19 06:53:13,263 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c052bbb9c/817c97b7870a45678eb72ad8d92ceb3b [2024-11-19 06:53:13,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:53:13,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:53:13,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:53:13,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:53:13,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:53:13,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4113743a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13, skipping insertion in model container [2024-11-19 06:53:13,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:53:13,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:53:13,677 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:53:13,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:53:13,805 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:53:13,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13 WrapperNode [2024-11-19 06:53:13,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:53:13,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:53:13,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:53:13,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:53:13,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,854 INFO L138 Inliner]: procedures = 121, calls = 23, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-11-19 06:53:13,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:53:13,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:53:13,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:53:13,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:53:13,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,906 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 5 writes are split as follows [5]. [2024-11-19 06:53:13,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,918 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,922 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:53:13,923 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:53:13,923 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:53:13,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:53:13,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (1/1) ... [2024-11-19 06:53:13,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:53:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:13,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 06:53:13,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 06:53:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:53:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-19 06:53:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-19 06:53:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:53:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 06:53:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 06:53:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:53:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:53:14,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:53:14,101 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:53:14,103 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:53:14,363 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-19 06:53:14,364 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:53:14,379 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:53:14,379 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 06:53:14,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:53:14 BoogieIcfgContainer [2024-11-19 06:53:14,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:53:14,381 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:53:14,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:53:14,385 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:53:14,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:53:13" (1/3) ... [2024-11-19 06:53:14,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de0abfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:53:14, skipping insertion in model container [2024-11-19 06:53:14,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:13" (2/3) ... [2024-11-19 06:53:14,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de0abfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:53:14, skipping insertion in model container [2024-11-19 06:53:14,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:53:14" (3/3) ... [2024-11-19 06:53:14,389 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-lst-shared.i [2024-11-19 06:53:14,405 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:53:14,406 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-11-19 06:53:14,460 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:53:14,470 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;@34374cee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:53:14,470 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-19 06:53:14,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-19 06:53:14,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:14,484 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 06:53:14,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:14,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:14,489 INFO L85 PathProgramCache]: Analyzing trace with hash 34518161, now seen corresponding path program 1 times [2024-11-19 06:53:14,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:14,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619627289] [2024-11-19 06:53:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:14,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:14,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619627289] [2024-11-19 06:53:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619627289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:14,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:14,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:14,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757912099] [2024-11-19 06:53:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:14,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:14,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:14,776 INFO L87 Difference]: Start difference. First operand has 75 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 71 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:53:14,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:14,870 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2024-11-19 06:53:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-19 06:53:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:14,882 INFO L225 Difference]: With dead ends: 74 [2024-11-19 06:53:14,882 INFO L226 Difference]: Without dead ends: 72 [2024-11-19 06:53:14,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:14,888 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:14,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 120 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:14,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-19 06:53:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-19 06:53:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.7560975609756098) internal successors, (72), 68 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-19 06:53:14,927 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 5 [2024-11-19 06:53:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:14,927 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-19 06:53:14,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:53:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-19 06:53:14,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-19 06:53:14,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:14,928 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 06:53:14,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:53:14,928 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:14,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:14,929 INFO L85 PathProgramCache]: Analyzing trace with hash 34518162, now seen corresponding path program 1 times [2024-11-19 06:53:14,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:14,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422694448] [2024-11-19 06:53:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:15,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422694448] [2024-11-19 06:53:15,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422694448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:15,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:15,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940716479] [2024-11-19 06:53:15,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:15,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:15,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:15,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:15,038 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:53:15,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:15,101 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2024-11-19 06:53:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:15,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-19 06:53:15,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:15,103 INFO L225 Difference]: With dead ends: 71 [2024-11-19 06:53:15,103 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 06:53:15,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:15,104 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:15,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 06:53:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-19 06:53:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 67 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2024-11-19 06:53:15,131 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 5 [2024-11-19 06:53:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:15,132 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2024-11-19 06:53:15,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 06:53:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2024-11-19 06:53:15,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:53:15,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:15,134 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:15,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:53:15,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:15,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash 888666692, now seen corresponding path program 1 times [2024-11-19 06:53:15,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:15,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559111021] [2024-11-19 06:53:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:15,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:15,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559111021] [2024-11-19 06:53:15,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559111021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:15,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:15,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:15,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266012203] [2024-11-19 06:53:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:15,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:15,245 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:15,317 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-19 06:53:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:15,318 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-19 06:53:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:15,320 INFO L225 Difference]: With dead ends: 75 [2024-11-19 06:53:15,320 INFO L226 Difference]: Without dead ends: 75 [2024-11-19 06:53:15,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:15,322 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:15,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:15,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-19 06:53:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-11-19 06:53:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 41 states have (on average 1.7073170731707317) internal successors, (70), 66 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-19 06:53:15,335 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 10 [2024-11-19 06:53:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:15,336 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-19 06:53:15,336 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-19 06:53:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:53:15,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:15,337 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:15,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:53:15,337 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:15,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash 888666693, now seen corresponding path program 1 times [2024-11-19 06:53:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:15,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296889250] [2024-11-19 06:53:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:15,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:15,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296889250] [2024-11-19 06:53:15,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296889250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:15,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:15,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:15,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610366993] [2024-11-19 06:53:15,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:15,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:15,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:15,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:15,455 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:15,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:15,508 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2024-11-19 06:53:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:15,509 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-19 06:53:15,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:15,511 INFO L225 Difference]: With dead ends: 74 [2024-11-19 06:53:15,512 INFO L226 Difference]: Without dead ends: 74 [2024-11-19 06:53:15,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:15,515 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:15,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 115 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:53:15,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-19 06:53:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-11-19 06:53:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 41 states have (on average 1.6829268292682926) internal successors, (69), 65 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-19 06:53:15,527 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 10 [2024-11-19 06:53:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:15,531 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-19 06:53:15,531 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-19 06:53:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:53:15,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:15,532 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:15,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:53:15,532 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:15,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash -689801403, now seen corresponding path program 1 times [2024-11-19 06:53:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:15,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735587852] [2024-11-19 06:53:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:15,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:15,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735587852] [2024-11-19 06:53:15,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735587852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:15,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:15,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:15,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040777822] [2024-11-19 06:53:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:15,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:15,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:15,744 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:15,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:15,867 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-19 06:53:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:53:15,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-19 06:53:15,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:15,868 INFO L225 Difference]: With dead ends: 71 [2024-11-19 06:53:15,868 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 06:53:15,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:15,870 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:15,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 227 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 06:53:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-19 06:53:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 62 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-19 06:53:15,875 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2024-11-19 06:53:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:15,876 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-19 06:53:15,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-19 06:53:15,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:53:15,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:15,877 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:15,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:53:15,877 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:15,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:15,878 INFO L85 PathProgramCache]: Analyzing trace with hash -689801402, now seen corresponding path program 1 times [2024-11-19 06:53:15,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:15,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722548811] [2024-11-19 06:53:15,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:16,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:16,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722548811] [2024-11-19 06:53:16,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722548811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:16,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:16,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:16,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146421121] [2024-11-19 06:53:16,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:16,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:16,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:16,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:16,117 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:16,260 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-19 06:53:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:53:16,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-19 06:53:16,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:16,261 INFO L225 Difference]: With dead ends: 70 [2024-11-19 06:53:16,262 INFO L226 Difference]: Without dead ends: 70 [2024-11-19 06:53:16,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:16,263 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 5 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:16,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 238 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-19 06:53:16,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-19 06:53:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 61 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:16,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-19 06:53:16,275 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 12 [2024-11-19 06:53:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:16,275 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-19 06:53:16,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-19 06:53:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:53:16,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:16,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:16,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:53:16,280 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:16,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash -552207829, now seen corresponding path program 1 times [2024-11-19 06:53:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:16,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804628735] [2024-11-19 06:53:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:16,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:16,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:16,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804628735] [2024-11-19 06:53:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804628735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:53:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436357795] [2024-11-19 06:53:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:16,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:53:16,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:53:16,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:53:16,384 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:16,504 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-19 06:53:16,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:53:16,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-19 06:53:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:16,506 INFO L225 Difference]: With dead ends: 86 [2024-11-19 06:53:16,506 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 06:53:16,507 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 [2024-11-19 06:53:16,508 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 26 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:16,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 192 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 06:53:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-19 06:53:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 75 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2024-11-19 06:53:16,524 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 18 [2024-11-19 06:53:16,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:16,524 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2024-11-19 06:53:16,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2024-11-19 06:53:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:53:16,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:16,526 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:16,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:53:16,526 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:16,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash -552207828, now seen corresponding path program 1 times [2024-11-19 06:53:16,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:16,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288054951] [2024-11-19 06:53:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:16,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288054951] [2024-11-19 06:53:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288054951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:16,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:16,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:53:16,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319564639] [2024-11-19 06:53:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:16,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:53:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:53:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:16,753 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:16,916 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2024-11-19 06:53:16,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:53:16,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-19 06:53:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:16,918 INFO L225 Difference]: With dead ends: 89 [2024-11-19 06:53:16,918 INFO L226 Difference]: Without dead ends: 89 [2024-11-19 06:53:16,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:53:16,920 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 26 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:16,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 347 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-19 06:53:16,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2024-11-19 06:53:16,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 75 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2024-11-19 06:53:16,930 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 18 [2024-11-19 06:53:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:16,930 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2024-11-19 06:53:16,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2024-11-19 06:53:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 06:53:16,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:16,931 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] [2024-11-19 06:53:16,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:53:16,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:16,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:16,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1904175387, now seen corresponding path program 1 times [2024-11-19 06:53:16,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507202088] [2024-11-19 06:53:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:17,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507202088] [2024-11-19 06:53:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507202088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:17,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:17,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:53:17,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337207322] [2024-11-19 06:53:17,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:17,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:53:17,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:17,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:53:17,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:17,068 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:17,128 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2024-11-19 06:53:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:53:17,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-19 06:53:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:17,130 INFO L225 Difference]: With dead ends: 85 [2024-11-19 06:53:17,131 INFO L226 Difference]: Without dead ends: 85 [2024-11-19 06:53:17,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:17,132 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 18 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:17,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 382 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-19 06:53:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-19 06:53:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.543859649122807) internal successors, (88), 76 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-19 06:53:17,144 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 20 [2024-11-19 06:53:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:17,144 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-19 06:53:17,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:17,144 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-19 06:53:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:53:17,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:17,145 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:17,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:53:17,145 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:17,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2038013526, now seen corresponding path program 1 times [2024-11-19 06:53:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:17,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221198870] [2024-11-19 06:53:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:17,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:17,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:17,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221198870] [2024-11-19 06:53:17,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221198870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:17,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:17,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:17,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442706807] [2024-11-19 06:53:17,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:17,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:17,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:17,279 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:17,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:17,398 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2024-11-19 06:53:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:53:17,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-19 06:53:17,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:17,400 INFO L225 Difference]: With dead ends: 83 [2024-11-19 06:53:17,400 INFO L226 Difference]: Without dead ends: 83 [2024-11-19 06:53:17,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:17,401 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 9 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:17,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 191 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:17,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-19 06:53:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2024-11-19 06:53:17,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.5263157894736843) internal successors, (87), 76 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2024-11-19 06:53:17,411 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 21 [2024-11-19 06:53:17,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:17,411 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2024-11-19 06:53:17,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 06:53:17,411 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2024-11-19 06:53:17,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:53:17,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:17,412 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:17,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:53:17,416 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:17,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:17,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2038013527, now seen corresponding path program 1 times [2024-11-19 06:53:17,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:17,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599820515] [2024-11-19 06:53:17,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:17,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:17,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:17,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599820515] [2024-11-19 06:53:17,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599820515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:17,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865789787] [2024-11-19 06:53:17,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:17,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:17,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:17,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:17,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:53:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:17,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 06:53:17,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:17,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 06:53:17,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:53:18,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:18,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 06:53:18,082 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:18,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:18,196 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-19 06:53:18,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:18,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 06:53:18,254 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:18,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-19 06:53:18,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:18,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865789787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:18,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-19 06:53:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109845383] [2024-11-19 06:53:18,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:18,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:53:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:53:18,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=291, Unknown=1, NotChecked=34, Total=380 [2024-11-19 06:53:18,393 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:18,720 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-11-19 06:53:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:53:18,721 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 21 [2024-11-19 06:53:18,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:18,722 INFO L225 Difference]: With dead ends: 85 [2024-11-19 06:53:18,722 INFO L226 Difference]: Without dead ends: 85 [2024-11-19 06:53:18,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=391, Unknown=1, NotChecked=40, Total=506 [2024-11-19 06:53:18,723 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:18,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 434 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 355 Invalid, 0 Unknown, 79 Unchecked, 0.2s Time] [2024-11-19 06:53:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-19 06:53:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-19 06:53:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 76 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2024-11-19 06:53:18,732 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 21 [2024-11-19 06:53:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:18,732 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2024-11-19 06:53:18,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 13 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2024-11-19 06:53:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:53:18,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:18,733 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] [2024-11-19 06:53:18,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:53:18,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 06:53:18,939 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:18,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1098658217, now seen corresponding path program 1 times [2024-11-19 06:53:18,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:18,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472195167] [2024-11-19 06:53:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:19,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:19,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472195167] [2024-11-19 06:53:19,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472195167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:19,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:19,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:53:19,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9181418] [2024-11-19 06:53:19,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:19,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:53:19,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:19,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:53:19,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:53:19,196 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:19,374 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2024-11-19 06:53:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:53:19,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-19 06:53:19,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:19,377 INFO L225 Difference]: With dead ends: 88 [2024-11-19 06:53:19,377 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 06:53:19,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:53:19,378 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 4 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:19,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 330 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:19,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 06:53:19,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 06:53:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.421875) internal successors, (91), 83 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:19,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-11-19 06:53:19,383 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 21 [2024-11-19 06:53:19,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:19,383 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-11-19 06:53:19,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:19,383 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-11-19 06:53:19,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 06:53:19,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:19,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:19,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:53:19,386 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:19,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash 803258831, now seen corresponding path program 1 times [2024-11-19 06:53:19,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:19,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338038913] [2024-11-19 06:53:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:19,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:19,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 06:53:19,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:19,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338038913] [2024-11-19 06:53:19,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338038913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:19,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:19,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:19,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184054345] [2024-11-19 06:53:19,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:19,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:19,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:19,525 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:19,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:19,633 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2024-11-19 06:53:19,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:53:19,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-19 06:53:19,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:19,634 INFO L225 Difference]: With dead ends: 87 [2024-11-19 06:53:19,634 INFO L226 Difference]: Without dead ends: 87 [2024-11-19 06:53:19,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:19,635 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:19,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 238 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:19,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-19 06:53:19,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-19 06:53:19,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.390625) internal successors, (89), 82 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2024-11-19 06:53:19,638 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 24 [2024-11-19 06:53:19,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:19,638 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2024-11-19 06:53:19,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2024-11-19 06:53:19,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 06:53:19,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:19,640 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:19,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 06:53:19,640 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:19,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:19,640 INFO L85 PathProgramCache]: Analyzing trace with hash 803258832, now seen corresponding path program 1 times [2024-11-19 06:53:19,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:19,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274205163] [2024-11-19 06:53:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:19,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:19,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274205163] [2024-11-19 06:53:19,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274205163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:19,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:19,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:19,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069624268] [2024-11-19 06:53:19,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:19,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:19,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:19,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:19,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:19,842 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:19,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:19,949 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2024-11-19 06:53:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:53:19,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-19 06:53:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:19,950 INFO L225 Difference]: With dead ends: 86 [2024-11-19 06:53:19,951 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 06:53:19,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:19,951 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 3 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:19,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 261 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 06:53:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-19 06:53:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.359375) internal successors, (87), 81 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2024-11-19 06:53:19,955 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 24 [2024-11-19 06:53:19,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:19,956 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2024-11-19 06:53:19,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:19,956 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2024-11-19 06:53:19,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 06:53:19,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:19,958 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] [2024-11-19 06:53:19,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 06:53:19,959 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:19,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:19,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1818827793, now seen corresponding path program 1 times [2024-11-19 06:53:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:19,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864041616] [2024-11-19 06:53:19,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:19,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864041616] [2024-11-19 06:53:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864041616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855608417] [2024-11-19 06:53:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:20,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:20,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:20,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:53:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:20,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-19 06:53:20,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:20,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 06:53:20,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:53:20,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:53:20,722 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:20,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:20,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 06:53:20,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-19 06:53:20,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:20,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 06:53:20,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:20,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-19 06:53:21,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:21,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:23,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:23,456 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-19 06:53:23,461 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 36 treesize of output 24 [2024-11-19 06:53:23,472 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-19 06:53:23,472 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-19 06:53:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855608417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:23,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:23,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2024-11-19 06:53:23,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309516788] [2024-11-19 06:53:23,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:23,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 06:53:23,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:23,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 06:53:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=762, Unknown=20, NotChecked=0, Total=870 [2024-11-19 06:53:23,506 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 27 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 06:53:27,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 06:53:31,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 06:53:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:32,132 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2024-11-19 06:53:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:53:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 27 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2024-11-19 06:53:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:32,133 INFO L225 Difference]: With dead ends: 88 [2024-11-19 06:53:32,134 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 06:53:32,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=124, Invalid=1046, Unknown=20, NotChecked=0, Total=1190 [2024-11-19 06:53:32,135 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:32,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 892 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 521 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2024-11-19 06:53:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 06:53:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 06:53:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3484848484848484) internal successors, (89), 83 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2024-11-19 06:53:32,138 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 24 [2024-11-19 06:53:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:32,138 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2024-11-19 06:53:32,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8666666666666667) internal successors, (56), 27 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 06:53:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2024-11-19 06:53:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:53:32,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:32,139 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] [2024-11-19 06:53:32,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:32,343 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,SelfDestructingSolverStorable14 [2024-11-19 06:53:32,344 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:32,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash -158226047, now seen corresponding path program 1 times [2024-11-19 06:53:32,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:32,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995215607] [2024-11-19 06:53:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:32,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:32,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:32,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:32,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995215607] [2024-11-19 06:53:32,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995215607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:32,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:32,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:32,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840566079] [2024-11-19 06:53:32,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:32,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:32,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:32,436 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:32,573 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2024-11-19 06:53:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:53:32,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-19 06:53:32,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:32,574 INFO L225 Difference]: With dead ends: 102 [2024-11-19 06:53:32,574 INFO L226 Difference]: Without dead ends: 102 [2024-11-19 06:53:32,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:32,575 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 33 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:32,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 184 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:32,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-19 06:53:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2024-11-19 06:53:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 93 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-19 06:53:32,578 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 26 [2024-11-19 06:53:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:32,579 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-19 06:53:32,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-19 06:53:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:53:32,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:32,580 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] [2024-11-19 06:53:32,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 06:53:32,580 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:32,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -158226046, now seen corresponding path program 1 times [2024-11-19 06:53:32,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:32,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819134252] [2024-11-19 06:53:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819134252] [2024-11-19 06:53:32,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819134252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920167384] [2024-11-19 06:53:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:32,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:32,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:32,731 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:32,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:53:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:32,822 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-19 06:53:32,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:32,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:33,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:33,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-19 06:53:33,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920167384] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 7] total 19 [2024-11-19 06:53:33,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844402328] [2024-11-19 06:53:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:33,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:53:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:53:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:53:33,176 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:33,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:33,350 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2024-11-19 06:53:33,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:33,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2024-11-19 06:53:33,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:33,352 INFO L225 Difference]: With dead ends: 106 [2024-11-19 06:53:33,352 INFO L226 Difference]: Without dead ends: 106 [2024-11-19 06:53:33,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:53:33,353 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 35 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:33,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 195 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:33,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-19 06:53:33,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2024-11-19 06:53:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.3766233766233766) internal successors, (106), 93 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:33,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2024-11-19 06:53:33,356 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 26 [2024-11-19 06:53:33,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:33,357 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2024-11-19 06:53:33,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:33,357 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2024-11-19 06:53:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-19 06:53:33,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:33,357 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] [2024-11-19 06:53:33,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:33,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:33,558 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:33,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -610028934, now seen corresponding path program 1 times [2024-11-19 06:53:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894152052] [2024-11-19 06:53:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:33,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894152052] [2024-11-19 06:53:33,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894152052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:33,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:33,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:53:33,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23013458] [2024-11-19 06:53:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:33,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:53:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:33,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:53:33,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:33,672 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:33,762 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2024-11-19 06:53:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:33,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-19 06:53:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:33,763 INFO L225 Difference]: With dead ends: 103 [2024-11-19 06:53:33,763 INFO L226 Difference]: Without dead ends: 103 [2024-11-19 06:53:33,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:33,764 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 29 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:33,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 333 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:33,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-19 06:53:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2024-11-19 06:53:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 76 states have (on average 1.3289473684210527) internal successors, (101), 92 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2024-11-19 06:53:33,767 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 27 [2024-11-19 06:53:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:33,768 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2024-11-19 06:53:33,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2024-11-19 06:53:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-19 06:53:33,768 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:33,768 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] [2024-11-19 06:53:33,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 06:53:33,769 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:33,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash -610040113, now seen corresponding path program 1 times [2024-11-19 06:53:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:33,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999810042] [2024-11-19 06:53:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:33,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:33,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:33,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999810042] [2024-11-19 06:53:33,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999810042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:33,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:33,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:53:33,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752252312] [2024-11-19 06:53:33,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:33,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:53:33,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:33,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:53:33,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:33,893 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:34,038 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2024-11-19 06:53:34,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:53:34,038 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-19 06:53:34,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:34,039 INFO L225 Difference]: With dead ends: 109 [2024-11-19 06:53:34,039 INFO L226 Difference]: Without dead ends: 109 [2024-11-19 06:53:34,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:53:34,040 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 19 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:34,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 279 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:34,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-19 06:53:34,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2024-11-19 06:53:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 80 states have (on average 1.3125) internal successors, (105), 96 states have internal predecessors, (105), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2024-11-19 06:53:34,043 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 27 [2024-11-19 06:53:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:34,043 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2024-11-19 06:53:34,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2024-11-19 06:53:34,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 06:53:34,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:34,044 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] [2024-11-19 06:53:34,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 06:53:34,045 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:34,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:34,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1731374207, now seen corresponding path program 1 times [2024-11-19 06:53:34,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:34,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492663469] [2024-11-19 06:53:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:34,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:34,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:34,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:34,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492663469] [2024-11-19 06:53:34,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492663469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:34,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:34,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:53:34,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091313027] [2024-11-19 06:53:34,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:34,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:53:34,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:34,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:53:34,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:34,206 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:34,382 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2024-11-19 06:53:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:34,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-19 06:53:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:34,383 INFO L225 Difference]: With dead ends: 108 [2024-11-19 06:53:34,383 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 06:53:34,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:53:34,384 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 19 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:34,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 227 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 06:53:34,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2024-11-19 06:53:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.308641975308642) internal successors, (106), 97 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2024-11-19 06:53:34,388 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 28 [2024-11-19 06:53:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:34,388 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2024-11-19 06:53:34,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2024-11-19 06:53:34,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:53:34,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:34,390 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] [2024-11-19 06:53:34,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 06:53:34,390 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:34,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:34,390 INFO L85 PathProgramCache]: Analyzing trace with hash -2132992751, now seen corresponding path program 1 times [2024-11-19 06:53:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047484133] [2024-11-19 06:53:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:34,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:34,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:34,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:34,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047484133] [2024-11-19 06:53:34,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047484133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:34,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:34,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:53:34,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102682589] [2024-11-19 06:53:34,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:34,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:53:34,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:34,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:53:34,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:34,564 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:34,725 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2024-11-19 06:53:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:34,725 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-19 06:53:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:34,726 INFO L225 Difference]: With dead ends: 103 [2024-11-19 06:53:34,726 INFO L226 Difference]: Without dead ends: 103 [2024-11-19 06:53:34,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:53:34,727 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 17 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:34,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 258 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-19 06:53:34,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-19 06:53:34,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 98 states have internal predecessors, (107), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:34,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2024-11-19 06:53:34,731 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 29 [2024-11-19 06:53:34,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:34,731 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2024-11-19 06:53:34,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:34,731 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2024-11-19 06:53:34,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:53:34,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:34,732 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:34,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 06:53:34,732 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:34,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1106629516, now seen corresponding path program 1 times [2024-11-19 06:53:34,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:34,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122470764] [2024-11-19 06:53:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:34,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:34,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122470764] [2024-11-19 06:53:34,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122470764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:34,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:34,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 06:53:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690702606] [2024-11-19 06:53:34,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:34,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:53:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:53:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:53:34,989 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:35,231 INFO L93 Difference]: Finished difference Result 107 states and 119 transitions. [2024-11-19 06:53:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:53:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2024-11-19 06:53:35,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:35,232 INFO L225 Difference]: With dead ends: 107 [2024-11-19 06:53:35,232 INFO L226 Difference]: Without dead ends: 107 [2024-11-19 06:53:35,233 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:53:35,233 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 29 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:35,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 249 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-19 06:53:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2024-11-19 06:53:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.3095238095238095) internal successors, (110), 100 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2024-11-19 06:53:35,237 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 31 [2024-11-19 06:53:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:35,237 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2024-11-19 06:53:35,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:35,237 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2024-11-19 06:53:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:53:35,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:35,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:35,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 06:53:35,238 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:35,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1106629515, now seen corresponding path program 1 times [2024-11-19 06:53:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834677568] [2024-11-19 06:53:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:35,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834677568] [2024-11-19 06:53:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834677568] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729039872] [2024-11-19 06:53:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:35,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:35,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:35,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:35,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:53:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:35,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 06:53:35,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:35,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:35,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:35,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-19 06:53:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:35,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729039872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:35,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:35,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2024-11-19 06:53:35,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032211277] [2024-11-19 06:53:35,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:35,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:53:35,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:53:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:53:35,791 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:36,013 INFO L93 Difference]: Finished difference Result 117 states and 129 transitions. [2024-11-19 06:53:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:53:36,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-11-19 06:53:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:36,014 INFO L225 Difference]: With dead ends: 117 [2024-11-19 06:53:36,014 INFO L226 Difference]: Without dead ends: 117 [2024-11-19 06:53:36,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-19 06:53:36,015 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 27 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:36,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 486 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-19 06:53:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2024-11-19 06:53:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-19 06:53:36,020 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 31 [2024-11-19 06:53:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:36,022 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-19 06:53:36,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-19 06:53:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 06:53:36,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:36,023 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:36,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 06:53:36,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:36,223 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:36,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash 569121521, now seen corresponding path program 1 times [2024-11-19 06:53:36,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:36,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600187729] [2024-11-19 06:53:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:36,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600187729] [2024-11-19 06:53:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600187729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:36,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:36,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:53:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744398467] [2024-11-19 06:53:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:36,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:53:36,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:53:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:36,357 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:36,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:36,464 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2024-11-19 06:53:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:36,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2024-11-19 06:53:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:36,466 INFO L225 Difference]: With dead ends: 108 [2024-11-19 06:53:36,466 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 06:53:36,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:36,467 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 19 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:36,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 301 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 06:53:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-19 06:53:36,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 103 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2024-11-19 06:53:36,470 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 34 [2024-11-19 06:53:36,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:36,470 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2024-11-19 06:53:36,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 06:53:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2024-11-19 06:53:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 06:53:36,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:36,471 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:36,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 06:53:36,471 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:36,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:36,472 INFO L85 PathProgramCache]: Analyzing trace with hash 945604030, now seen corresponding path program 1 times [2024-11-19 06:53:36,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:36,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328320101] [2024-11-19 06:53:36,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:36,926 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:53:36,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328320101] [2024-11-19 06:53:36,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328320101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369127370] [2024-11-19 06:53:36,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:36,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:36,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:36,929 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:36,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:53:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:37,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 06:53:37,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:37,091 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:37,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:37,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:53:37,166 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-19 06:53:37,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-19 06:53:37,179 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 31 treesize of output 13 [2024-11-19 06:53:37,192 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base 1))) is different from true [2024-11-19 06:53:37,210 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-19 06:53:37,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-19 06:53:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2024-11-19 06:53:37,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:37,342 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-19 06:53:37,343 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 21 treesize of output 20 [2024-11-19 06:53:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:37,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369127370] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:37,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 23 [2024-11-19 06:53:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006379392] [2024-11-19 06:53:37,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:37,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 06:53:37,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:37,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 06:53:37,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=4, NotChecked=42, Total=552 [2024-11-19 06:53:37,541 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 20 states have internal predecessors, (51), 3 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 06:53:37,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:37,848 INFO L93 Difference]: Finished difference Result 107 states and 118 transitions. [2024-11-19 06:53:37,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:53:37,849 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 20 states have internal predecessors, (51), 3 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 36 [2024-11-19 06:53:37,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:37,850 INFO L225 Difference]: With dead ends: 107 [2024-11-19 06:53:37,850 INFO L226 Difference]: Without dead ends: 107 [2024-11-19 06:53:37,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=652, Unknown=4, NotChecked=52, Total=812 [2024-11-19 06:53:37,851 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:37,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 544 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 338 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2024-11-19 06:53:37,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-19 06:53:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-19 06:53:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.2727272727272727) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-19 06:53:37,854 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 36 [2024-11-19 06:53:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:37,855 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-19 06:53:37,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.217391304347826) internal successors, (51), 20 states have internal predecessors, (51), 3 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 06:53:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-19 06:53:37,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 06:53:37,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:37,855 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:37,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:53:38,056 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,SelfDestructingSolverStorable24 [2024-11-19 06:53:38,056 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:38,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:38,057 INFO L85 PathProgramCache]: Analyzing trace with hash 945604031, now seen corresponding path program 1 times [2024-11-19 06:53:38,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:38,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496375741] [2024-11-19 06:53:38,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:38,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:38,757 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:38,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496375741] [2024-11-19 06:53:38,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496375741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:38,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292281623] [2024-11-19 06:53:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:38,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:38,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:53:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:38,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 06:53:38,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:38,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:53:38,988 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:38,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:39,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:53:39,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:53:39,124 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-19 06:53:39,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-19 06:53:39,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-19 06:53:39,163 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 42 treesize of output 18 [2024-11-19 06:53:39,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-19 06:53:39,195 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2024-11-19 06:53:39,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:39,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 06:53:39,227 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:39,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-19 06:53:39,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:39,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292281623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:39,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:39,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 22 [2024-11-19 06:53:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189766276] [2024-11-19 06:53:39,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:39,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-19 06:53:39,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:39,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-19 06:53:39,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=491, Unknown=1, NotChecked=44, Total=600 [2024-11-19 06:53:39,352 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 23 states, 22 states have (on average 2.0) internal successors, (44), 18 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:53:39,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:39,838 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2024-11-19 06:53:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:53:39,839 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 18 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2024-11-19 06:53:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:39,840 INFO L225 Difference]: With dead ends: 104 [2024-11-19 06:53:39,840 INFO L226 Difference]: Without dead ends: 104 [2024-11-19 06:53:39,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=810, Unknown=1, NotChecked=58, Total=992 [2024-11-19 06:53:39,841 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:39,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 541 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 405 Invalid, 0 Unknown, 68 Unchecked, 0.3s Time] [2024-11-19 06:53:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-19 06:53:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-19 06:53:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 99 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2024-11-19 06:53:39,847 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 36 [2024-11-19 06:53:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:39,848 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2024-11-19 06:53:39,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.0) internal successors, (44), 18 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 06:53:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2024-11-19 06:53:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 06:53:39,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:39,850 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] [2024-11-19 06:53:39,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:40,051 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,SelfDestructingSolverStorable25 [2024-11-19 06:53:40,051 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:40,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2103899583, now seen corresponding path program 1 times [2024-11-19 06:53:40,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:40,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939412347] [2024-11-19 06:53:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:40,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:40,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:40,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939412347] [2024-11-19 06:53:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939412347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:40,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016298949] [2024-11-19 06:53:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:40,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:40,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:40,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:40,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:53:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:40,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 06:53:40,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 06:53:40,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:40,637 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:40,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-19 06:53:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 06:53:40,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016298949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:40,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:40,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 19 [2024-11-19 06:53:40,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341863943] [2024-11-19 06:53:40,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:40,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:53:40,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:53:40,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:53:40,713 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 20 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 06:53:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:40,900 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2024-11-19 06:53:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:53:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2024-11-19 06:53:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:40,901 INFO L225 Difference]: With dead ends: 108 [2024-11-19 06:53:40,901 INFO L226 Difference]: Without dead ends: 108 [2024-11-19 06:53:40,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:53:40,902 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 3 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:40,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 651 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:40,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-19 06:53:40,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2024-11-19 06:53:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 102 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2024-11-19 06:53:40,905 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 36 [2024-11-19 06:53:40,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:40,906 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2024-11-19 06:53:40,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.0) internal successors, (76), 19 states have internal predecessors, (76), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 06:53:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2024-11-19 06:53:40,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 06:53:40,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:40,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:40,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 06:53:41,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:41,107 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:41,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1831518759, now seen corresponding path program 1 times [2024-11-19 06:53:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:41,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725703943] [2024-11-19 06:53:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:41,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:41,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725703943] [2024-11-19 06:53:41,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725703943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:41,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778674270] [2024-11-19 06:53:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:41,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:41,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:41,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:41,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:53:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:41,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-19 06:53:41,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:41,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:53:41,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:53:41,838 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:53:41,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-19 06:53:41,860 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:53:41,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-19 06:53:41,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-19 06:53:41,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-19 06:53:42,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-19 06:53:42,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:42,301 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 25 treesize of output 23 [2024-11-19 06:53:42,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:42,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:42,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 47 [2024-11-19 06:53:42,335 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:42,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:42,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:42,561 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 [2024-11-19 06:53:42,869 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_965 (Array Int Int))) (let ((.cse0 (select (let ((.cse1 (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965))) (store .cse1 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse1 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|))) (or (= (select .cse0 8) 0) (= (select .cse0 0) |c_ULTIMATE.start_create_~sll~0#1.base|)))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_965 (Array Int Int))) (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965))) (store .cse2 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) |c_ULTIMATE.start_create_~sll~0#1.base|) 0) |c_ULTIMATE.start_create_~sll~0#1.base|)) (forall ((v_ArrVal_964 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_964))) (store .cse3 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse3 |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |ULTIMATE.start_create_~data~0#1.offset|))) |c_ULTIMATE.start_create_~sll~0#1.base|) 8) 0))))) is different from false [2024-11-19 06:53:42,889 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_964 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (store (select (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_964) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.offset|) 8) 0)) (forall ((v_ArrVal_965 (Array Int Int))) (= (select (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.base|) 0) |c_ULTIMATE.start_create_#t~ret4#1.base|)))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_965 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |ULTIMATE.start_create_~data~0#1.base|))) (or (= (select .cse0 8) 0) (= (select .cse0 0) |c_ULTIMATE.start_create_#t~ret4#1.base|))))) is different from false [2024-11-19 06:53:42,948 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_964 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (store (select (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_964) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.offset|) 8) 0)) (forall ((v_ArrVal_965 (Array Int Int))) (= |c_alloc_and_zero_#res.base| (select (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.base|) 0))))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_965 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |ULTIMATE.start_create_~data~0#1.base|))) (or (= |c_alloc_and_zero_#res.base| (select .cse0 0)) (= (select .cse0 8) 0))))) is different from false [2024-11-19 06:53:42,989 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_create_~data~0#1.base| Int) (v_ArrVal_965 (Array Int Int))) (let ((.cse0 (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |ULTIMATE.start_create_~data~0#1.base|))) (or (= c_alloc_and_zero_~pi~0.base (select .cse0 0)) (= (select .cse0 8) 0)))) (forall ((|ULTIMATE.start_create_~data~0#1.base| Int)) (or (forall ((v_ArrVal_965 (Array Int Int))) (= c_alloc_and_zero_~pi~0.base (select (store (select (store |c_#memory_$Pointer$#0.base| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_965) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |ULTIMATE.start_create_~data~0#1.base|) 0))) (forall ((v_ArrVal_964 (Array Int Int)) (|ULTIMATE.start_create_~data~0#1.offset| Int)) (= (select (store (select (store |c_#memory_$Pointer$#0.offset| |ULTIMATE.start_create_~data~0#1.base| v_ArrVal_964) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |ULTIMATE.start_create_~data~0#1.offset|) 8) 0))))) is different from false [2024-11-19 06:53:43,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:43,007 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-19 06:53:43,013 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 38 treesize of output 34 [2024-11-19 06:53:43,020 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 22 treesize of output 20 [2024-11-19 06:53:43,033 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 06:53:43,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 29 [2024-11-19 06:53:43,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:43,044 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-19 06:53:43,050 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 38 treesize of output 34 [2024-11-19 06:53:43,053 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:43,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:43,062 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 19 treesize of output 23 [2024-11-19 06:53:43,067 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:43,070 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 9 treesize of output 7 [2024-11-19 06:53:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:43,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778674270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:43,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:43,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 38 [2024-11-19 06:53:43,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174599097] [2024-11-19 06:53:43,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:43,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-19 06:53:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-19 06:53:43,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1038, Unknown=4, NotChecked=268, Total=1406 [2024-11-19 06:53:43,094 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 35 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 06:53:44,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:44,176 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2024-11-19 06:53:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 06:53:44,177 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 35 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2024-11-19 06:53:44,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:44,178 INFO L225 Difference]: With dead ends: 142 [2024-11-19 06:53:44,178 INFO L226 Difference]: Without dead ends: 142 [2024-11-19 06:53:44,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=1906, Unknown=4, NotChecked=364, Total=2450 [2024-11-19 06:53:44,179 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:44,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 787 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1121 Invalid, 0 Unknown, 298 Unchecked, 0.6s Time] [2024-11-19 06:53:44,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-19 06:53:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2024-11-19 06:53:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 115 states have (on average 1.2695652173913043) internal successors, (146), 126 states have internal predecessors, (146), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2024-11-19 06:53:44,183 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 37 [2024-11-19 06:53:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:44,184 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2024-11-19 06:53:44,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 35 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 06:53:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2024-11-19 06:53:44,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 06:53:44,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:44,184 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:44,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:44,385 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,SelfDestructingSolverStorable27 [2024-11-19 06:53:44,385 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:44,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:44,385 INFO L85 PathProgramCache]: Analyzing trace with hash -942508120, now seen corresponding path program 1 times [2024-11-19 06:53:44,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:44,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726798902] [2024-11-19 06:53:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:44,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:44,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:44,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726798902] [2024-11-19 06:53:44,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726798902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:44,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841947052] [2024-11-19 06:53:44,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:44,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:44,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:44,961 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:44,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:53:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:45,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-19 06:53:45,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:45,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 06:53:45,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:45,500 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 39 treesize of output 31 [2024-11-19 06:53:45,868 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~l#1.base_23| Int) (|v_ULTIMATE.start_destroy_#t~mem13#1.base_14| Int)) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_23| 1) |v_ULTIMATE.start_destroy_#t~mem13#1.base_14|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~l#1.base_23|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_#t~mem13#1.base_14| 0) |v_ULTIMATE.start_destroy_~l#1.base_23| 0)))) is different from true [2024-11-19 06:53:45,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-19 06:53:45,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:46,132 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 48 treesize of output 44 [2024-11-19 06:53:46,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841947052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:46,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:46,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 27 [2024-11-19 06:53:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324762785] [2024-11-19 06:53:46,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:46,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:53:46,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:46,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:53:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1239, Unknown=1, NotChecked=70, Total=1406 [2024-11-19 06:53:46,613 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:47,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:47,532 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2024-11-19 06:53:47,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:53:47,533 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-11-19 06:53:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:47,534 INFO L225 Difference]: With dead ends: 138 [2024-11-19 06:53:47,534 INFO L226 Difference]: Without dead ends: 114 [2024-11-19 06:53:47,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=157, Invalid=1916, Unknown=1, NotChecked=88, Total=2162 [2024-11-19 06:53:47,535 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 23 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:47,535 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 435 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 731 Invalid, 1 Unknown, 84 Unchecked, 0.5s Time] [2024-11-19 06:53:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-19 06:53:47,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-19 06:53:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 109 states have internal predecessors, (128), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2024-11-19 06:53:47,538 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 38 [2024-11-19 06:53:47,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:47,538 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2024-11-19 06:53:47,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:53:47,539 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2024-11-19 06:53:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:53:47,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:47,539 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:47,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:53:47,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:53:47,744 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:47,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash 814734249, now seen corresponding path program 1 times [2024-11-19 06:53:47,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:47,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133043468] [2024-11-19 06:53:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:47,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:48,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133043468] [2024-11-19 06:53:48,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133043468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365990219] [2024-11-19 06:53:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:48,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:48,359 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:48,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:53:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:48,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-19 06:53:48,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:48,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:53:48,724 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-19 06:53:48,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-19 06:53:48,731 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 [2024-11-19 06:53:48,743 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:48,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:48,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:53:48,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:48,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-19 06:53:48,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-19 06:53:48,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:48,939 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2024-11-19 06:53:48,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 36 [2024-11-19 06:53:49,221 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 06:53:49,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 19 [2024-11-19 06:53:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:49,227 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:49,389 INFO L349 Elim1Store]: treesize reduction 5, result has 77.3 percent of original size [2024-11-19 06:53:49,390 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 26 treesize of output 25 [2024-11-19 06:53:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365990219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:49,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:49,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 36 [2024-11-19 06:53:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78132471] [2024-11-19 06:53:49,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:49,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-19 06:53:49,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:49,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-19 06:53:49,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1821, Unknown=0, NotChecked=0, Total=1980 [2024-11-19 06:53:49,613 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 31 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:50,224 INFO L93 Difference]: Finished difference Result 116 states and 138 transitions. [2024-11-19 06:53:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:53:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 31 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-19 06:53:50,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:50,225 INFO L225 Difference]: With dead ends: 116 [2024-11-19 06:53:50,225 INFO L226 Difference]: Without dead ends: 116 [2024-11-19 06:53:50,226 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=264, Invalid=2816, Unknown=0, NotChecked=0, Total=3080 [2024-11-19 06:53:50,227 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 19 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:50,227 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 652 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:53:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-19 06:53:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-19 06:53:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.3131313131313131) internal successors, (130), 110 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2024-11-19 06:53:50,230 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 39 [2024-11-19 06:53:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:50,231 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2024-11-19 06:53:50,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8055555555555556) internal successors, (65), 31 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2024-11-19 06:53:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:53:50,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:50,232 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:50,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 06:53:50,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:50,433 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:50,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 814734250, now seen corresponding path program 1 times [2024-11-19 06:53:50,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:50,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247913296] [2024-11-19 06:53:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:50,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:51,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:51,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247913296] [2024-11-19 06:53:51,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247913296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:51,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632542291] [2024-11-19 06:53:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:51,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:51,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:51,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:51,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:53:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:51,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-19 06:53:51,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:51,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:53:51,750 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:51,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:51,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:53:51,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:53:51,878 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-19 06:53:51,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-19 06:53:51,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-19 06:53:52,020 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 31 treesize of output 13 [2024-11-19 06:53:52,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-19 06:53:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:52,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:52,220 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_1210 (Array Int Int)) (v_ArrVal_1209 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1209) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1210) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0)))) (forall ((v_ArrVal_1209 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1209) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse0))))) is different from false [2024-11-19 06:53:52,230 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (.cse1 (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8))) (and (forall ((v_ArrVal_1209 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1209) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1))) (forall ((v_ArrVal_1210 (Array Int Int)) (v_ArrVal_1209 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_1209) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_1210) |c_ULTIMATE.start_create_~sll~0#1.base|) .cse1)))))) is different from false [2024-11-19 06:53:52,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:52,246 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-19 06:53:52,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:52,255 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 40 treesize of output 39 [2024-11-19 06:53:52,271 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 7 treesize of output 3 [2024-11-19 06:53:52,278 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:52,278 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-11-19 06:53:52,284 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:52,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-19 06:53:52,288 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:52,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:52,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-19 06:53:52,293 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:52,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:52,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-19 06:53:52,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632542291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:52,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:52,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14] total 30 [2024-11-19 06:53:52,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594788179] [2024-11-19 06:53:52,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:52,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 06:53:52,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:52,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 06:53:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1301, Unknown=2, NotChecked=146, Total=1560 [2024-11-19 06:53:52,410 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:52,999 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2024-11-19 06:53:53,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 06:53:53,000 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2024-11-19 06:53:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:53,000 INFO L225 Difference]: With dead ends: 119 [2024-11-19 06:53:53,001 INFO L226 Difference]: Without dead ends: 119 [2024-11-19 06:53:53,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=175, Invalid=1901, Unknown=2, NotChecked=178, Total=2256 [2024-11-19 06:53:53,003 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:53,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 749 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:53:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-19 06:53:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-19 06:53:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.2941176470588236) internal successors, (132), 113 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:53,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2024-11-19 06:53:53,006 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 39 [2024-11-19 06:53:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:53,006 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2024-11-19 06:53:53,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2024-11-19 06:53:53,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 06:53:53,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:53,007 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, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:53,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 06:53:53,207 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,SelfDestructingSolverStorable30 [2024-11-19 06:53:53,208 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:53,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash 886407223, now seen corresponding path program 1 times [2024-11-19 06:53:53,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:53,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744891655] [2024-11-19 06:53:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:53,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:53,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744891655] [2024-11-19 06:53:53,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744891655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:53,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036640922] [2024-11-19 06:53:53,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:53,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:53,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:53,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:53,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:53:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:53,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-19 06:53:53,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:53,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:53:54,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:54,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 06:53:54,071 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:54,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:54,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:54,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-19 06:53:54,247 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2024-11-19 06:53:54,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-19 06:53:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:54,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:54,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036640922] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:54,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:54,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2024-11-19 06:53:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966897492] [2024-11-19 06:53:54,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:54,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 06:53:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 06:53:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1417, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 06:53:54,928 INFO L87 Difference]: Start difference. First operand 118 states and 138 transitions. Second operand has 32 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 28 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:55,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:55,507 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2024-11-19 06:53:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 06:53:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 28 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 42 [2024-11-19 06:53:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:55,508 INFO L225 Difference]: With dead ends: 138 [2024-11-19 06:53:55,512 INFO L226 Difference]: Without dead ends: 138 [2024-11-19 06:53:55,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=222, Invalid=1940, Unknown=0, NotChecked=0, Total=2162 [2024-11-19 06:53:55,513 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:55,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 669 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:53:55,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-19 06:53:55,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2024-11-19 06:53:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 115 states have internal predecessors, (134), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2024-11-19 06:53:55,519 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 42 [2024-11-19 06:53:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:55,519 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2024-11-19 06:53:55,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 28 states have internal predecessors, (73), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:55,520 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2024-11-19 06:53:55,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 06:53:55,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:55,520 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:55,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-19 06:53:55,721 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,SelfDestructingSolverStorable31 [2024-11-19 06:53:55,721 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:55,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:55,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1708820249, now seen corresponding path program 1 times [2024-11-19 06:53:55,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:55,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002829690] [2024-11-19 06:53:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:55,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:56,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:56,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002829690] [2024-11-19 06:53:56,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002829690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:56,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53646730] [2024-11-19 06:53:56,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:56,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:56,199 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:56,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:53:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:56,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-19 06:53:56,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:56,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:53:56,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-19 06:53:56,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:56,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-19 06:53:56,624 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:56,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:56,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-19 06:53:56,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:56,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-19 06:53:56,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-19 06:53:56,826 INFO L349 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2024-11-19 06:53:56,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2024-11-19 06:53:57,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-19 06:53:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:57,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53646730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:57,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:57,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2024-11-19 06:53:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468402009] [2024-11-19 06:53:57,720 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:57,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 06:53:57,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:57,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 06:53:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1399, Unknown=0, NotChecked=0, Total=1560 [2024-11-19 06:53:57,721 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 28 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:58,383 INFO L93 Difference]: Finished difference Result 137 states and 158 transitions. [2024-11-19 06:53:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:53:58,384 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 28 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2024-11-19 06:53:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:58,385 INFO L225 Difference]: With dead ends: 137 [2024-11-19 06:53:58,385 INFO L226 Difference]: Without dead ends: 137 [2024-11-19 06:53:58,386 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=255, Invalid=2001, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 06:53:58,386 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:58,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 588 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:53:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-19 06:53:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2024-11-19 06:53:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 106 states have (on average 1.2830188679245282) internal successors, (136), 117 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:53:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2024-11-19 06:53:58,394 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 43 [2024-11-19 06:53:58,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:58,394 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2024-11-19 06:53:58,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 28 states have internal predecessors, (74), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 06:53:58,395 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2024-11-19 06:53:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 06:53:58,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:58,395 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:58,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:58,595 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,SelfDestructingSolverStorable32 [2024-11-19 06:53:58,596 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:53:58,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:58,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1433820281, now seen corresponding path program 1 times [2024-11-19 06:53:58,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:58,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065412814] [2024-11-19 06:53:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:58,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:53:59,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065412814] [2024-11-19 06:53:59,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065412814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:59,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801519615] [2024-11-19 06:53:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:59,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:59,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:59,121 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:53:59,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:53:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:59,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-19 06:53:59,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:59,392 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:59,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:59,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-19 06:53:59,519 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-19 06:53:59,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2024-11-19 06:53:59,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-19 06:53:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:59,706 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:59,838 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1487 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem9#1.base| v_ArrVal_1487) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) 0))) is different from false [2024-11-19 06:53:59,843 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1487 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|)) v_ArrVal_1487) |c_ULTIMATE.start_create_~sll~0#1.base|) (+ |c_ULTIMATE.start_create_~sll~0#1.offset| 8)) 0))) is different from false [2024-11-19 06:53:59,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:59,852 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-19 06:53:59,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:59,860 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 39 treesize of output 38 [2024-11-19 06:53:59,864 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 22 treesize of output 18 [2024-11-19 06:54:00,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801519615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:54:00,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:54:00,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2024-11-19 06:54:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754070876] [2024-11-19 06:54:00,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:54:00,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 06:54:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:54:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 06:54:00,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1161, Unknown=2, NotChecked=138, Total=1406 [2024-11-19 06:54:00,003 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 26 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:54:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:54:00,714 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2024-11-19 06:54:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 06:54:00,714 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 26 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-19 06:54:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:54:00,715 INFO L225 Difference]: With dead ends: 122 [2024-11-19 06:54:00,715 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 06:54:00,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=2072, Unknown=2, NotChecked=186, Total=2450 [2024-11-19 06:54:00,716 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 19 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:54:00,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 837 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 06:54:00,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 06:54:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2024-11-19 06:54:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 113 states have internal predecessors, (131), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:54:00,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2024-11-19 06:54:00,719 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 44 [2024-11-19 06:54:00,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:54:00,719 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2024-11-19 06:54:00,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.466666666666667) internal successors, (74), 26 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 06:54:00,719 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2024-11-19 06:54:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 06:54:00,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:54:00,720 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-11-19 06:54:00,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 06:54:00,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:54:00,925 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-19 06:54:00,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:54:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1653040911, now seen corresponding path program 2 times [2024-11-19 06:54:00,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:54:00,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117585781] [2024-11-19 06:54:00,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:54:00,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:54:00,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:54:00,954 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:54:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:54:02,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:54:02,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117585781] [2024-11-19 06:54:02,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117585781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:54:02,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994975533] [2024-11-19 06:54:02,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:54:02,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:54:02,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:54:02,098 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:54:02,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:54:02,250 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:54:02,250 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:54:02,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-19 06:54:02,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:54:02,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:54:02,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 06:54:02,400 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:54:02,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:54:02,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-19 06:54:02,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-19 06:54:02,512 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 06:54:02,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2024-11-19 06:54:02,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2024-11-19 06:54:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:54:02,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:54:08,848 INFO L349 Elim1Store]: treesize reduction 275, result has 49.5 percent of original size [2024-11-19 06:54:08,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 5783 treesize of output 3523 [2024-11-19 06:54:09,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:54:09,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 4489 treesize of output 4629 [2024-11-19 06:54:10,281 INFO L349 Elim1Store]: treesize reduction 593, result has 51.4 percent of original size [2024-11-19 06:54:10,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 23 case distinctions, treesize of input 4403 treesize of output 3952 [2024-11-19 06:54:11,020 INFO L349 Elim1Store]: treesize reduction 543, result has 38.7 percent of original size [2024-11-19 06:54:11,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 3390 treesize of output 3569 [2024-11-19 06:54:11,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:54:11,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3375 treesize of output 3633