./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-fst-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-fst-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 b71f005f6b63440309c4e24d3866ac559942cc4e42efba34dd3f9c28733bd7e5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:53:08,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:53:08,884 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-19 06:53:08,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:53:08,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:53:08,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:53:08,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:53:08,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:53:08,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:53:08,913 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:53:08,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:53:08,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:53:08,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:53:08,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:53:08,916 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:53:08,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:53:08,916 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:53:08,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:53:08,917 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:53:08,918 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:53:08,918 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:53:08,922 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:53:08,923 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:53:08,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:53:08,923 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:53:08,923 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:53:08,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:53:08,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:53:08,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:53:08,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:53:08,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:53:08,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:53:08,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:53:08,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:53:08,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:53:08,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:53:08,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:53:08,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:53:08,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:53:08,929 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b71f005f6b63440309c4e24d3866ac559942cc4e42efba34dd3f9c28733bd7e5 [2024-11-19 06:53:09,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:53:09,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:53:09,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:53:09,266 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:53:09,267 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:53:09,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-fst-shared.i [2024-11-19 06:53:10,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:53:11,098 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:53:11,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-fst-shared.i [2024-11-19 06:53:11,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030622ec6/fdfb8d307d274d3a9f4485d3716243e0/FLAG9c093ba41 [2024-11-19 06:53:11,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030622ec6/fdfb8d307d274d3a9f4485d3716243e0 [2024-11-19 06:53:11,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:53:11,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:53:11,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:53:11,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:53:11,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:53:11,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,155 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9b8aff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11, skipping insertion in model container [2024-11-19 06:53:11,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:53:11,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:53:11,623 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:53:11,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:53:11,706 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:53:11,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11 WrapperNode [2024-11-19 06:53:11,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:53:11,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:53:11,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:53:11,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:53:11,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,753 INFO L138 Inliner]: procedures = 121, calls = 23, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-11-19 06:53:11,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:53:11,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:53:11,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:53:11,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:53:11,768 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,769 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,772 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,791 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 06:53:11,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,813 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:53:11,821 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:53:11,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:53:11,822 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:53:11,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (1/1) ... [2024-11-19 06:53:11,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:53:11,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:11,855 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 06:53:11,858 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 06:53:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:53:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-19 06:53:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-19 06:53:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:53:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 06:53:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 06:53:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:53:11,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:53:11,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:53:12,011 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:53:12,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:53:12,282 INFO L? ?]: Removed 77 outVars from TransFormulas that were not future-live. [2024-11-19 06:53:12,282 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:53:12,295 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:53:12,296 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 06:53:12,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:53:12 BoogieIcfgContainer [2024-11-19 06:53:12,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:53:12,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:53:12,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:53:12,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:53:12,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:53:11" (1/3) ... [2024-11-19 06:53:12,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475b8992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:53:12, skipping insertion in model container [2024-11-19 06:53:12,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:53:11" (2/3) ... [2024-11-19 06:53:12,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475b8992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:53:12, skipping insertion in model container [2024-11-19 06:53:12,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:53:12" (3/3) ... [2024-11-19 06:53:12,308 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-fst-shared.i [2024-11-19 06:53:12,327 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:53:12,328 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2024-11-19 06:53:12,385 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:53:12,394 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;@764bf802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:53:12,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-19 06:53:12,400 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 06:53:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-19 06:53:12,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:12,411 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 06:53:12,411 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 06:53:12,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 34518161, now seen corresponding path program 1 times [2024-11-19 06:53:12,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:12,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570285763] [2024-11-19 06:53:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:12,636 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 06:53:12,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570285763] [2024-11-19 06:53:12,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570285763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:12,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:12,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:12,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324000166] [2024-11-19 06:53:12,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:12,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:12,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:12,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:12,682 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 06:53:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:12,774 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2024-11-19 06:53:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:12,777 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 06:53:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:12,786 INFO L225 Difference]: With dead ends: 74 [2024-11-19 06:53:12,787 INFO L226 Difference]: Without dead ends: 72 [2024-11-19 06:53:12,789 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 06:53:12,794 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 06:53:12,796 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 06:53:12,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-19 06:53:12,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-19 06:53:12,833 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 06:53:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2024-11-19 06:53:12,837 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 5 [2024-11-19 06:53:12,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:12,837 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2024-11-19 06:53:12,838 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 06:53:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2024-11-19 06:53:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-19 06:53:12,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:12,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 06:53:12,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:53:12,839 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 06:53:12,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash 34518162, now seen corresponding path program 1 times [2024-11-19 06:53:12,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:12,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077684661] [2024-11-19 06:53:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:12,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:12,961 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 06:53:12,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:12,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077684661] [2024-11-19 06:53:12,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077684661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:12,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:12,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:12,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293181502] [2024-11-19 06:53:12,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:12,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:12,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:12,965 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 06:53:13,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:13,021 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2024-11-19 06:53:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:13,021 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 06:53:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:13,023 INFO L225 Difference]: With dead ends: 71 [2024-11-19 06:53:13,023 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 06:53:13,023 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 06:53:13,024 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:13,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 124 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:53:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 06:53:13,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-19 06:53:13,030 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 06:53:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2024-11-19 06:53:13,031 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 5 [2024-11-19 06:53:13,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:13,032 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2024-11-19 06:53:13,032 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 06:53:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2024-11-19 06:53:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:53:13,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:13,033 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:13,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:53:13,033 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 06:53:13,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash 888666692, now seen corresponding path program 1 times [2024-11-19 06:53:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282558960] [2024-11-19 06:53:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:13,146 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 06:53:13,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282558960] [2024-11-19 06:53:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282558960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:13,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:13,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:13,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107178264] [2024-11-19 06:53:13,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:13,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:13,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:13,155 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 06:53:13,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:13,226 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2024-11-19 06:53:13,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:13,227 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 06:53:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:13,229 INFO L225 Difference]: With dead ends: 75 [2024-11-19 06:53:13,229 INFO L226 Difference]: Without dead ends: 75 [2024-11-19 06:53:13,230 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 06:53:13,231 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 06:53:13,232 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 06:53:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-19 06:53:13,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2024-11-19 06:53:13,243 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 06:53:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-19 06:53:13,245 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 10 [2024-11-19 06:53:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:13,245 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-19 06:53:13,245 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 06:53:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-19 06:53:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-19 06:53:13,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:13,246 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:13,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:53:13,247 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 06:53:13,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash 888666693, now seen corresponding path program 1 times [2024-11-19 06:53:13,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:13,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215814266] [2024-11-19 06:53:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:13,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:13,375 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 06:53:13,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:13,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215814266] [2024-11-19 06:53:13,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215814266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:13,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:13,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:53:13,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581017125] [2024-11-19 06:53:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:13,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:53:13,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:53:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:53:13,397 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 06:53:13,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:13,534 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2024-11-19 06:53:13,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:53:13,534 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 06:53:13,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:13,536 INFO L225 Difference]: With dead ends: 74 [2024-11-19 06:53:13,537 INFO L226 Difference]: Without dead ends: 74 [2024-11-19 06:53:13,537 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 06:53:13,538 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:13,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 115 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-19 06:53:13,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-11-19 06:53:13,551 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 06:53:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2024-11-19 06:53:13,552 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 10 [2024-11-19 06:53:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:13,552 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2024-11-19 06:53:13,552 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 06:53:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2024-11-19 06:53:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:53:13,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:13,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:13,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:53:13,553 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 06:53:13,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:13,554 INFO L85 PathProgramCache]: Analyzing trace with hash -689801403, now seen corresponding path program 1 times [2024-11-19 06:53:13,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:13,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211776698] [2024-11-19 06:53:13,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:13,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:13,758 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 06:53:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211776698] [2024-11-19 06:53:13,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211776698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:13,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:13,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700003467] [2024-11-19 06:53:13,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:13,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:13,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:13,764 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 06:53:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:13,917 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-11-19 06:53:13,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:53:13,917 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 06:53:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:13,918 INFO L225 Difference]: With dead ends: 71 [2024-11-19 06:53:13,919 INFO L226 Difference]: Without dead ends: 71 [2024-11-19 06:53:13,919 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 06:53:13,922 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 06:53:13,922 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 06:53:13,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-19 06:53:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2024-11-19 06:53:13,930 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 06:53:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-19 06:53:13,934 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 12 [2024-11-19 06:53:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:13,934 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-19 06:53:13,934 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 06:53:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-19 06:53:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 06:53:13,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:13,935 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:53:13,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:53:13,935 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 06:53:13,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:13,936 INFO L85 PathProgramCache]: Analyzing trace with hash -689801402, now seen corresponding path program 1 times [2024-11-19 06:53:13,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:13,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580368651] [2024-11-19 06:53:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:13,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:14,225 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 06:53:14,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:14,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580368651] [2024-11-19 06:53:14,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580368651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:14,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:14,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769397555] [2024-11-19 06:53:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:14,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:14,227 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 06:53:14,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:14,396 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2024-11-19 06:53:14,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:53:14,396 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 06:53:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:14,398 INFO L225 Difference]: With dead ends: 70 [2024-11-19 06:53:14,399 INFO L226 Difference]: Without dead ends: 70 [2024-11-19 06:53:14,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:14,401 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:14,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 238 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-19 06:53:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2024-11-19 06:53:14,410 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 06:53:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2024-11-19 06:53:14,411 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 12 [2024-11-19 06:53:14,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:14,411 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2024-11-19 06:53:14,411 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 06:53:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2024-11-19 06:53:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:53:14,412 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:14,412 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 06:53:14,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:53:14,412 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 06:53:14,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:14,413 INFO L85 PathProgramCache]: Analyzing trace with hash -552207829, now seen corresponding path program 1 times [2024-11-19 06:53:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:14,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105372157] [2024-11-19 06:53:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:14,522 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 06:53:14,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:14,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105372157] [2024-11-19 06:53:14,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105372157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:14,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:14,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:53:14,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622046850] [2024-11-19 06:53:14,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:14,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:53:14,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:14,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:53:14,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:53:14,525 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 06:53:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:14,644 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2024-11-19 06:53:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:53:14,645 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 06:53:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:14,646 INFO L225 Difference]: With dead ends: 86 [2024-11-19 06:53:14,646 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 06:53:14,646 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 06:53:14,647 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 06:53:14,647 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 06:53:14,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 06:53:14,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-19 06:53:14,655 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 06:53:14,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2024-11-19 06:53:14,659 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 18 [2024-11-19 06:53:14,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:14,659 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2024-11-19 06:53:14,659 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 06:53:14,660 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2024-11-19 06:53:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-19 06:53:14,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:14,661 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 06:53:14,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:53:14,661 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 06:53:14,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash -552207828, now seen corresponding path program 1 times [2024-11-19 06:53:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831764589] [2024-11-19 06:53:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:14,852 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 06:53:14,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831764589] [2024-11-19 06:53:14,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831764589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:14,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:14,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:53:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969734113] [2024-11-19 06:53:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:14,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:53:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:14,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:53:14,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:14,855 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 06:53:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:15,004 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2024-11-19 06:53:15,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:15,005 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 06:53:15,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:15,006 INFO L225 Difference]: With dead ends: 89 [2024-11-19 06:53:15,006 INFO L226 Difference]: Without dead ends: 89 [2024-11-19 06:53:15,006 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 06:53:15,006 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 15 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:15,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 361 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:15,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-19 06:53:15,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2024-11-19 06:53:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 82 states have internal predecessors, (97), 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 06:53:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2024-11-19 06:53:15,016 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 18 [2024-11-19 06:53:15,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:15,017 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2024-11-19 06:53:15,019 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 06:53:15,019 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2024-11-19 06:53:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-19 06:53:15,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:15,020 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 06:53:15,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:53:15,020 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 06:53:15,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:15,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1904175387, now seen corresponding path program 1 times [2024-11-19 06:53:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:15,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314655207] [2024-11-19 06:53:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,136 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 06:53:15,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:15,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314655207] [2024-11-19 06:53:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314655207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:15,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:15,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:53:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841845750] [2024-11-19 06:53:15,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:15,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:53:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:53:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:15,139 INFO L87 Difference]: Start difference. First operand 87 states and 103 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 06:53:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:15,204 INFO L93 Difference]: Finished difference Result 92 states and 109 transitions. [2024-11-19 06:53:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:53:15,209 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 06:53:15,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:15,210 INFO L225 Difference]: With dead ends: 92 [2024-11-19 06:53:15,210 INFO L226 Difference]: Without dead ends: 92 [2024-11-19 06:53:15,210 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 06:53:15,211 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 18 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:15,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 388 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-19 06:53:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2024-11-19 06:53:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.5) internal successors, (96), 83 states have internal predecessors, (96), 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 06:53:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2024-11-19 06:53:15,219 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 20 [2024-11-19 06:53:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:15,219 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2024-11-19 06:53:15,219 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 06:53:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2024-11-19 06:53:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:53:15,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:15,220 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 06:53:15,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:53:15,220 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 06:53:15,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:15,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2038013526, now seen corresponding path program 1 times [2024-11-19 06:53:15,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:15,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034265855] [2024-11-19 06:53:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,398 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 06:53:15,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:15,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034265855] [2024-11-19 06:53:15,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034265855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:15,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:15,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:15,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557576040] [2024-11-19 06:53:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:15,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:15,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:15,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:15,401 INFO L87 Difference]: Start difference. First operand 88 states and 102 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 06:53:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:15,542 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2024-11-19 06:53:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:53:15,542 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 06:53:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:15,543 INFO L225 Difference]: With dead ends: 88 [2024-11-19 06:53:15,544 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 06:53:15,544 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 06:53:15,545 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 9 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:15,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 226 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 06:53:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 06:53:15,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.484375) internal successors, (95), 83 states have internal predecessors, (95), 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 06:53:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2024-11-19 06:53:15,555 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 21 [2024-11-19 06:53:15,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:15,555 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2024-11-19 06:53:15,555 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 06:53:15,556 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2024-11-19 06:53:15,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-19 06:53:15,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:15,556 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 06:53:15,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:53:15,557 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 06:53:15,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2038013527, now seen corresponding path program 1 times [2024-11-19 06:53:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417536775] [2024-11-19 06:53:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,774 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 06:53:15,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417536775] [2024-11-19 06:53:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417536775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119438525] [2024-11-19 06:53:15,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:15,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:15,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:15,777 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 06:53:15,779 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 06:53:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:15,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 06:53:15,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:16,075 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 06:53:16,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:16,132 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 16 treesize of output 11 [2024-11-19 06:53:16,146 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:16,147 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 06:53:16,170 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 06:53:16,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119438525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:16,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:16,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-19 06:53:16,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840243837] [2024-11-19 06:53:16,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:16,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 06:53:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 06:53:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=289, Unknown=1, NotChecked=34, Total=380 [2024-11-19 06:53:16,309 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 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 06:53:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:16,525 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2024-11-19 06:53:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:53:16,525 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 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 21 [2024-11-19 06:53:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:16,527 INFO L225 Difference]: With dead ends: 90 [2024-11-19 06:53:16,527 INFO L226 Difference]: Without dead ends: 90 [2024-11-19 06:53:16,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=389, Unknown=1, NotChecked=40, Total=506 [2024-11-19 06:53:16,528 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 32 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:16,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 439 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 158 Invalid, 0 Unknown, 79 Unchecked, 0.1s Time] [2024-11-19 06:53:16,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-19 06:53:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2024-11-19 06:53:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.4375) internal successors, (92), 83 states have internal predecessors, (92), 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 06:53:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2024-11-19 06:53:16,532 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 21 [2024-11-19 06:53:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:16,532 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2024-11-19 06:53:16,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 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 06:53:16,532 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2024-11-19 06:53:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 06:53:16,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:16,533 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 06:53:16,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:16,734 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 06:53:16,734 INFO L396 AbstractCegarLoop]: === Iteration 12 === 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 06:53:16,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash 803258831, now seen corresponding path program 1 times [2024-11-19 06:53:16,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:16,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70090268] [2024-11-19 06:53:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:16,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:16,874 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 06:53:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70090268] [2024-11-19 06:53:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70090268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:16,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:16,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:16,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883339317] [2024-11-19 06:53:16,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:16,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:16,877 INFO L87 Difference]: Start difference. First operand 88 states and 98 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 06:53:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:16,988 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2024-11-19 06:53:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:53:16,988 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 06:53:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:16,989 INFO L225 Difference]: With dead ends: 87 [2024-11-19 06:53:16,989 INFO L226 Difference]: Without dead ends: 87 [2024-11-19 06:53:16,990 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 06:53:16,990 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 06:53:16,990 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 06:53:16,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-19 06:53:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-19 06:53:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.40625) internal successors, (90), 82 states have internal predecessors, (90), 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 06:53:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2024-11-19 06:53:17,002 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 24 [2024-11-19 06:53:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:17,002 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2024-11-19 06:53:17,002 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 06:53:17,003 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2024-11-19 06:53:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 06:53:17,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:17,004 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 06:53:17,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:53:17,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === 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 06:53:17,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 803258832, now seen corresponding path program 1 times [2024-11-19 06:53:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:17,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678823570] [2024-11-19 06:53:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:17,283 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 06:53:17,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:17,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678823570] [2024-11-19 06:53:17,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678823570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:17,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:17,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:17,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719219885] [2024-11-19 06:53:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:17,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:17,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:17,286 INFO L87 Difference]: Start difference. First operand 87 states and 96 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 06:53:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:17,396 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2024-11-19 06:53:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:53:17,397 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 06:53:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:17,398 INFO L225 Difference]: With dead ends: 86 [2024-11-19 06:53:17,398 INFO L226 Difference]: Without dead ends: 86 [2024-11-19 06:53:17,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:53:17,399 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 06:53:17,400 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 06:53:17,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-19 06:53:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-19 06:53:17,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 64 states have (on average 1.375) internal successors, (88), 81 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 06:53:17,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2024-11-19 06:53:17,404 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 24 [2024-11-19 06:53:17,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:17,404 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2024-11-19 06:53:17,404 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 06:53:17,405 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2024-11-19 06:53:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 06:53:17,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:17,405 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 06:53:17,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 06:53:17,405 INFO L396 AbstractCegarLoop]: === Iteration 14 === 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 06:53:17,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1818827793, now seen corresponding path program 1 times [2024-11-19 06:53:17,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:17,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941869300] [2024-11-19 06:53:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:17,836 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 06:53:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:17,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941869300] [2024-11-19 06:53:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941869300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:17,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887881163] [2024-11-19 06:53:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:17,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:17,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:17,852 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 06:53:17,853 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 06:53:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:17,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-19 06:53:17,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:17,968 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 06:53:17,997 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 06:53:18,009 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 06:53:18,123 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:18,124 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 06:53:18,170 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 06:53:18,178 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 06:53:18,249 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-19 06:53:18,250 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 27 treesize of output 17 [2024-11-19 06:53:18,269 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-19 06:53:18,269 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 27 treesize of output 17 [2024-11-19 06:53:18,483 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 06:53:18,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:18,999 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_338 (Array Int Int)) (v_ArrVal_342 Int) (|v_ULTIMATE.start_loop_~x#1.offset_13| Int)) (or (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_338))) (store .cse0 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse0 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1 v_ArrVal_342))) |c_ULTIMATE.start_create_~sll~0#1.base|) |v_ULTIMATE.start_loop_~x#1.offset_13|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_13| 0) (< |c_ULTIMATE.start_create_~sll~0#1.offset| |v_ULTIMATE.start_loop_~x#1.offset_13|))) (forall ((v_ArrVal_337 (Array Int Int)) (v_ArrVal_341 Int) (|v_ULTIMATE.start_loop_~x#1.offset_13| Int)) (or (= (select (select (let ((.cse2 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~data~0#1.base| v_ArrVal_337))) (store .cse2 |c_ULTIMATE.start_create_~now~0#1.base| (store (select .cse2 |c_ULTIMATE.start_create_~now~0#1.base|) .cse1 v_ArrVal_341))) |c_ULTIMATE.start_create_~sll~0#1.base|) |v_ULTIMATE.start_loop_~x#1.offset_13|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_13| 0) (< |c_ULTIMATE.start_create_~sll~0#1.offset| |v_ULTIMATE.start_loop_~x#1.offset_13|))))) is different from false [2024-11-19 06:53:19,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:19,478 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 18 treesize of output 19 [2024-11-19 06:53:19,488 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:19,488 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 30 treesize of output 30 [2024-11-19 06:53:19,498 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 06:53:19,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:19,533 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 18 treesize of output 19 [2024-11-19 06:53:19,536 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:19,544 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 06:53:19,544 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 16 treesize of output 11 [2024-11-19 06:53:19,595 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 06:53:19,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887881163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:19,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:19,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2024-11-19 06:53:19,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264459857] [2024-11-19 06:53:19,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:19,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 06:53:19,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 06:53:19,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=731, Unknown=1, NotChecked=54, Total=870 [2024-11-19 06:53:19,598 INFO L87 Difference]: Start difference. First operand 86 states and 94 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 06:53:20,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:20,208 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2024-11-19 06:53:20,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:53:20,209 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 06:53:20,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:20,210 INFO L225 Difference]: With dead ends: 88 [2024-11-19 06:53:20,210 INFO L226 Difference]: Without dead ends: 88 [2024-11-19 06:53:20,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=946, Unknown=1, NotChecked=62, Total=1122 [2024-11-19 06:53:20,211 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:20,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 906 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 495 Invalid, 0 Unknown, 38 Unchecked, 0.4s Time] [2024-11-19 06:53:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-19 06:53:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-19 06:53:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.3636363636363635) internal successors, (90), 83 states have internal predecessors, (90), 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 06:53:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2024-11-19 06:53:20,214 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 24 [2024-11-19 06:53:20,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:20,215 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2024-11-19 06:53:20,215 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 06:53:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2024-11-19 06:53:20,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:53:20,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:20,216 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 06:53:20,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:53:20,419 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,SelfDestructingSolverStorable13 [2024-11-19 06:53:20,420 INFO L396 AbstractCegarLoop]: === Iteration 15 === 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 06:53:20,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:20,420 INFO L85 PathProgramCache]: Analyzing trace with hash -158226047, now seen corresponding path program 1 times [2024-11-19 06:53:20,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:20,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436280960] [2024-11-19 06:53:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:20,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:20,502 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 06:53:20,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:20,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436280960] [2024-11-19 06:53:20,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436280960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:20,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:20,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:53:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786523537] [2024-11-19 06:53:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:20,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:53:20,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:53:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:53:20,505 INFO L87 Difference]: Start difference. First operand 88 states and 96 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 06:53:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:20,639 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2024-11-19 06:53:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:53:20,640 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 06:53:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:20,641 INFO L225 Difference]: With dead ends: 102 [2024-11-19 06:53:20,641 INFO L226 Difference]: Without dead ends: 102 [2024-11-19 06:53:20,641 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 06:53:20,642 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 06:53:20,642 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 06:53:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-19 06:53:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2024-11-19 06:53:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 93 states have internal predecessors, (108), 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 06:53:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2024-11-19 06:53:20,645 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 26 [2024-11-19 06:53:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:20,647 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2024-11-19 06:53:20,647 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 06:53:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2024-11-19 06:53:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:53:20,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:20,650 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 06:53:20,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 06:53:20,651 INFO L396 AbstractCegarLoop]: === Iteration 16 === 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 06:53:20,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -158226046, now seen corresponding path program 1 times [2024-11-19 06:53:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:20,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128463000] [2024-11-19 06:53:20,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:20,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:20,848 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 06:53:20,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:20,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128463000] [2024-11-19 06:53:20,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128463000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:20,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367322998] [2024-11-19 06:53:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:20,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:20,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:20,851 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 06:53:20,852 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 06:53:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:20,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 06:53:20,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:21,042 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 06:53:21,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:21,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:21,166 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 25 [2024-11-19 06:53:21,217 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 06:53:21,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367322998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:21,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 18 [2024-11-19 06:53:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200790450] [2024-11-19 06:53:21,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:21,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-19 06:53:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-19 06:53:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:53:21,219 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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 06:53:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:21,406 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2024-11-19 06:53:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:53:21,407 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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 26 [2024-11-19 06:53:21,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:21,408 INFO L225 Difference]: With dead ends: 110 [2024-11-19 06:53:21,408 INFO L226 Difference]: Without dead ends: 110 [2024-11-19 06:53:21,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2024-11-19 06:53:21,409 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 51 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:21,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 425 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:21,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-19 06:53:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2024-11-19 06:53:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 103 states have internal predecessors, (120), 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 06:53:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 126 transitions. [2024-11-19 06:53:21,412 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 126 transitions. Word has length 26 [2024-11-19 06:53:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:21,412 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 126 transitions. [2024-11-19 06:53:21,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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 06:53:21,412 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 126 transitions. [2024-11-19 06:53:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-19 06:53:21,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:21,413 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 06:53:21,425 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 06:53:21,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:21,614 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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 06:53:21,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -610040113, now seen corresponding path program 1 times [2024-11-19 06:53:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592835296] [2024-11-19 06:53:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:21,872 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 06:53:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:21,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592835296] [2024-11-19 06:53:21,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592835296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:21,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:21,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 06:53:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191188185] [2024-11-19 06:53:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:21,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:53:21,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:53:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:53:21,875 INFO L87 Difference]: Start difference. First operand 108 states and 126 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 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 06:53:22,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:22,059 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2024-11-19 06:53:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:53:22,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 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 06:53:22,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:22,061 INFO L225 Difference]: With dead ends: 122 [2024-11-19 06:53:22,061 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 06:53:22,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:53:22,062 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 20 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:22,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 383 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 06:53:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2024-11-19 06:53:22,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.358695652173913) internal successors, (125), 107 states have internal predecessors, (125), 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 06:53:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2024-11-19 06:53:22,066 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 27 [2024-11-19 06:53:22,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:22,066 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2024-11-19 06:53:22,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 10 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 06:53:22,067 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2024-11-19 06:53:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 06:53:22,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:22,067 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 06:53:22,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 06:53:22,068 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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 06:53:22,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1731029240, now seen corresponding path program 1 times [2024-11-19 06:53:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:22,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613518219] [2024-11-19 06:53:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:22,161 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 06:53:22,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:22,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613518219] [2024-11-19 06:53:22,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613518219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:22,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:22,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:53:22,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204985573] [2024-11-19 06:53:22,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:22,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:53:22,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:53:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:22,164 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) 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 06:53:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:22,231 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2024-11-19 06:53:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) 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 06:53:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:22,233 INFO L225 Difference]: With dead ends: 112 [2024-11-19 06:53:22,233 INFO L226 Difference]: Without dead ends: 112 [2024-11-19 06:53:22,233 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 06:53:22,235 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 28 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:22,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 340 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-19 06:53:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2024-11-19 06:53:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.3111111111111111) internal successors, (118), 105 states have internal predecessors, (118), 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 06:53:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 124 transitions. [2024-11-19 06:53:22,239 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 124 transitions. Word has length 28 [2024-11-19 06:53:22,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:22,240 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 124 transitions. [2024-11-19 06:53:22,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) 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 06:53:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 124 transitions. [2024-11-19 06:53:22,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 06:53:22,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:22,241 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 06:53:22,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 06:53:22,241 INFO L396 AbstractCegarLoop]: === Iteration 19 === 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 06:53:22,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1731374207, now seen corresponding path program 1 times [2024-11-19 06:53:22,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:22,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819071971] [2024-11-19 06:53:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:22,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:22,513 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 06:53:22,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:22,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819071971] [2024-11-19 06:53:22,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819071971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:22,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:22,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 06:53:22,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040461272] [2024-11-19 06:53:22,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:22,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:53:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:22,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:53:22,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:53:22,515 INFO L87 Difference]: Start difference. First operand 110 states and 124 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 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 06:53:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:22,718 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2024-11-19 06:53:22,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:53:22,719 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 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 06:53:22,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:22,719 INFO L225 Difference]: With dead ends: 117 [2024-11-19 06:53:22,720 INFO L226 Difference]: Without dead ends: 117 [2024-11-19 06:53:22,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:53:22,720 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:22,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 338 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-19 06:53:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2024-11-19 06:53:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 91 states have (on average 1.3076923076923077) internal successors, (119), 106 states have internal predecessors, (119), 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 06:53:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2024-11-19 06:53:22,724 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 28 [2024-11-19 06:53:22,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:22,724 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2024-11-19 06:53:22,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 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 06:53:22,724 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2024-11-19 06:53:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 06:53:22,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:22,725 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 06:53:22,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 06:53:22,725 INFO L396 AbstractCegarLoop]: === Iteration 20 === 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 06:53:22,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2132992751, now seen corresponding path program 1 times [2024-11-19 06:53:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718046870] [2024-11-19 06:53:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:23,062 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 06:53:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718046870] [2024-11-19 06:53:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718046870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:23,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 06:53:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119785356] [2024-11-19 06:53:23,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:23,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:53:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:23,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:53:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:53:23,064 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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 06:53:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:23,240 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2024-11-19 06:53:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:53:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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 06:53:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:23,242 INFO L225 Difference]: With dead ends: 112 [2024-11-19 06:53:23,242 INFO L226 Difference]: Without dead ends: 112 [2024-11-19 06:53:23,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-19 06:53:23,243 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 17 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:23,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 376 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:53:23,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-19 06:53:23,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-19 06:53:23,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.3043478260869565) internal successors, (120), 107 states have internal predecessors, (120), 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 06:53:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2024-11-19 06:53:23,247 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 29 [2024-11-19 06:53:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:23,247 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2024-11-19 06:53:23,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 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 06:53:23,248 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2024-11-19 06:53:23,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:53:23,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:23,249 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 06:53:23,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 06:53:23,249 INFO L396 AbstractCegarLoop]: === Iteration 21 === 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 06:53:23,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1106629516, now seen corresponding path program 1 times [2024-11-19 06:53:23,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:23,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722354328] [2024-11-19 06:53:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:23,611 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 06:53:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722354328] [2024-11-19 06:53:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722354328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:23,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:23,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 06:53:23,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392809449] [2024-11-19 06:53:23,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:23,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 06:53:23,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:23,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 06:53:23,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:53:23,614 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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 06:53:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:23,847 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2024-11-19 06:53:23,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:53:23,848 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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 06:53:23,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:23,849 INFO L225 Difference]: With dead ends: 116 [2024-11-19 06:53:23,849 INFO L226 Difference]: Without dead ends: 116 [2024-11-19 06:53:23,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:53:23,850 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:23,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 295 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-19 06:53:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2024-11-19 06:53:23,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.297872340425532) internal successors, (122), 109 states have internal predecessors, (122), 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 06:53:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2024-11-19 06:53:23,853 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 31 [2024-11-19 06:53:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:23,853 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2024-11-19 06:53:23,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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 06:53:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2024-11-19 06:53:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 06:53:23,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:23,854 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] [2024-11-19 06:53:23,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 06:53:23,854 INFO L396 AbstractCegarLoop]: === Iteration 22 === 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 06:53:23,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2026523588, now seen corresponding path program 1 times [2024-11-19 06:53:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:23,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9230766] [2024-11-19 06:53:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:23,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:24,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:24,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9230766] [2024-11-19 06:53:24,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9230766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:24,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606869897] [2024-11-19 06:53:24,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:24,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:24,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:24,210 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 06:53:24,211 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 06:53:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:24,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 06:53:24,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:24,512 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:24,512 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 06:53:24,527 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 16 treesize of output 11 [2024-11-19 06:53:24,562 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 15 treesize of output 1 [2024-11-19 06:53:24,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-19 06:53:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:24,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:24,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606869897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:24,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:24,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2024-11-19 06:53:24,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182763758] [2024-11-19 06:53:24,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:24,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:53:24,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:53:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2024-11-19 06:53:24,910 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand has 25 states, 24 states have (on average 2.25) internal successors, (54), 21 states have internal predecessors, (54), 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 06:53:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:25,252 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2024-11-19 06:53:25,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:53:25,255 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 21 states have internal predecessors, (54), 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 33 [2024-11-19 06:53:25,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:25,256 INFO L225 Difference]: With dead ends: 115 [2024-11-19 06:53:25,256 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 06:53:25,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:53:25,257 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 20 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:25,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 633 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:25,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 06:53:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2024-11-19 06:53:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 109 states have internal predecessors, (121), 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 06:53:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2024-11-19 06:53:25,262 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 33 [2024-11-19 06:53:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:25,262 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2024-11-19 06:53:25,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.25) internal successors, (54), 21 states have internal predecessors, (54), 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 06:53:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2024-11-19 06:53:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 06:53:25,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:25,262 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 06:53:25,281 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 06:53:25,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:25,468 INFO L396 AbstractCegarLoop]: === Iteration 23 === 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 06:53:25,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash 569121521, now seen corresponding path program 1 times [2024-11-19 06:53:25,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:25,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630606772] [2024-11-19 06:53:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:25,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:25,602 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 06:53:25,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:25,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630606772] [2024-11-19 06:53:25,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630606772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:53:25,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:53:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:53:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562438953] [2024-11-19 06:53:25,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:53:25,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:53:25,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:53:25,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:53:25,605 INFO L87 Difference]: Start difference. First operand 114 states and 127 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 06:53:25,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:25,698 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2024-11-19 06:53:25,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:53:25,699 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 06:53:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:25,700 INFO L225 Difference]: With dead ends: 115 [2024-11-19 06:53:25,700 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 06:53:25,700 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 06:53:25,701 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 06:53:25,701 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 06:53:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 06:53:25,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-19 06:53:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 110 states have internal predecessors, (122), 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 06:53:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2024-11-19 06:53:25,705 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 34 [2024-11-19 06:53:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:25,705 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2024-11-19 06:53:25,705 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 06:53:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2024-11-19 06:53:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 06:53:25,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:25,706 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 06:53:25,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 06:53:25,706 INFO L396 AbstractCegarLoop]: === Iteration 24 === 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 06:53:25,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:25,706 INFO L85 PathProgramCache]: Analyzing trace with hash 945604030, now seen corresponding path program 1 times [2024-11-19 06:53:25,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:25,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463914167] [2024-11-19 06:53:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:25,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:26,050 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 06:53:26,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463914167] [2024-11-19 06:53:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463914167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:26,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247552960] [2024-11-19 06:53:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:26,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:26,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:26,054 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 06:53:26,055 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 06:53:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:26,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-19 06:53:26,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:26,225 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:26,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-19 06:53:26,243 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 15 treesize of output 1 [2024-11-19 06:53:26,321 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-19 06:53:26,322 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 34 treesize of output 33 [2024-11-19 06:53:26,331 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 25 treesize of output 13 [2024-11-19 06:53:26,348 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) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2024-11-19 06:53:26,377 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 06:53:26,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 06:53:26,380 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 06:53:26,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247552960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:26,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:26,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 19 [2024-11-19 06:53:26,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948899049] [2024-11-19 06:53:26,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:26,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:53:26,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:26,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:53:26,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=332, Unknown=1, NotChecked=36, Total=420 [2024-11-19 06:53:26,431 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 17 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:53:26,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:26,727 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2024-11-19 06:53:26,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:53:26,728 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 17 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-11-19 06:53:26,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:26,728 INFO L225 Difference]: With dead ends: 114 [2024-11-19 06:53:26,728 INFO L226 Difference]: Without dead ends: 114 [2024-11-19 06:53:26,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=517, Unknown=1, NotChecked=46, Total=650 [2024-11-19 06:53:26,729 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:26,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 537 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 350 Invalid, 0 Unknown, 58 Unchecked, 0.2s Time] [2024-11-19 06:53:26,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-19 06:53:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-19 06:53:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 95 states have (on average 1.2736842105263158) internal successors, (121), 109 states have internal predecessors, (121), 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 06:53:26,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2024-11-19 06:53:26,732 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 36 [2024-11-19 06:53:26,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:26,732 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2024-11-19 06:53:26,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 17 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:53:26,733 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2024-11-19 06:53:26,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-19 06:53:26,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:26,733 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 06:53:26,752 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 06:53:26,937 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,SelfDestructingSolverStorable23 [2024-11-19 06:53:26,938 INFO L396 AbstractCegarLoop]: === Iteration 25 === 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 06:53:26,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 945604031, now seen corresponding path program 1 times [2024-11-19 06:53:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493909941] [2024-11-19 06:53:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:26,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:27,503 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 06:53:27,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:27,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493909941] [2024-11-19 06:53:27,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493909941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:27,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368088843] [2024-11-19 06:53:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:27,507 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 06:53:27,508 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 06:53:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:27,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-19 06:53:27,646 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:27,662 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 06:53:27,736 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:27,736 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 06:53:27,765 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 06:53:27,772 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 15 treesize of output 1 [2024-11-19 06:53:27,849 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-19 06:53:27,850 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 59 treesize of output 52 [2024-11-19 06:53:27,857 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 24 treesize of output 11 [2024-11-19 06:53:27,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2024-11-19 06:53:27,908 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 7 treesize of output 3 [2024-11-19 06:53:27,987 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 06:53:28,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:28,005 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 06:53:28,013 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:28,013 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 06:53:28,030 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 06:53:28,030 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368088843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:28,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:28,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 26 [2024-11-19 06:53:28,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881237295] [2024-11-19 06:53:28,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:28,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 06:53:28,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:28,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 06:53:28,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=676, Unknown=1, NotChecked=52, Total=812 [2024-11-19 06:53:28,118 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 21 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 06:53:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:28,571 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2024-11-19 06:53:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 06:53:28,572 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 21 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2024-11-19 06:53:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:28,573 INFO L225 Difference]: With dead ends: 111 [2024-11-19 06:53:28,573 INFO L226 Difference]: Without dead ends: 111 [2024-11-19 06:53:28,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=151, Invalid=1042, Unknown=1, NotChecked=66, Total=1260 [2024-11-19 06:53:28,574 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 15 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:28,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 674 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 544 Invalid, 0 Unknown, 68 Unchecked, 0.3s Time] [2024-11-19 06:53:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-19 06:53:28,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-19 06:53:28,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 106 states have internal predecessors, (118), 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 06:53:28,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2024-11-19 06:53:28,577 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 36 [2024-11-19 06:53:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:28,577 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2024-11-19 06:53:28,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 21 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 06:53:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2024-11-19 06:53:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 06:53:28,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:28,578 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 06:53:28,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 06:53:28,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:28,783 INFO L396 AbstractCegarLoop]: === Iteration 26 === 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 06:53:28,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:28,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1831518759, now seen corresponding path program 1 times [2024-11-19 06:53:28,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:28,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271369460] [2024-11-19 06:53:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:28,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:28,987 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 06:53:28,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:28,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271369460] [2024-11-19 06:53:28,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271369460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:28,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751646881] [2024-11-19 06:53:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:28,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:28,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:28,989 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 06:53:28,993 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 06:53:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:29,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-19 06:53:29,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:29,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:29,325 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 15 treesize of output 15 [2024-11-19 06:53:29,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:29,331 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 15 treesize of output 15 [2024-11-19 06:53:29,412 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 06:53:29,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:29,607 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-19 06:53:29,607 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 24 treesize of output 23 [2024-11-19 06:53:29,615 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-19 06:53:29,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2024-11-19 06:53:29,769 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 06:53:29,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751646881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:53:29,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:53:29,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 16] total 27 [2024-11-19 06:53:29,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400507599] [2024-11-19 06:53:29,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:29,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-19 06:53:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-19 06:53:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2024-11-19 06:53:29,771 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 26 states have internal predecessors, (75), 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 06:53:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:30,220 INFO L93 Difference]: Finished difference Result 142 states and 165 transitions. [2024-11-19 06:53:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-19 06:53:30,220 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 26 states have internal predecessors, (75), 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 37 [2024-11-19 06:53:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:30,221 INFO L225 Difference]: With dead ends: 142 [2024-11-19 06:53:30,221 INFO L226 Difference]: Without dead ends: 142 [2024-11-19 06:53:30,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=1146, Unknown=0, NotChecked=0, Total=1260 [2024-11-19 06:53:30,222 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:30,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 669 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:53:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-19 06:53:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2024-11-19 06:53:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 115 states have (on average 1.2608695652173914) internal successors, (145), 126 states have internal predecessors, (145), 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 06:53:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2024-11-19 06:53:30,225 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 37 [2024-11-19 06:53:30,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:30,226 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2024-11-19 06:53:30,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.7777777777777777) internal successors, (75), 26 states have internal predecessors, (75), 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 06:53:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2024-11-19 06:53:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 06:53:30,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:30,226 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 06:53:30,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:30,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:30,431 INFO L396 AbstractCegarLoop]: === Iteration 27 === 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 06:53:30,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash -942508120, now seen corresponding path program 1 times [2024-11-19 06:53:30,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:30,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829564528] [2024-11-19 06:53:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:30,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:30,987 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 06:53:30,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:30,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829564528] [2024-11-19 06:53:30,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829564528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:30,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771072339] [2024-11-19 06:53:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:30,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:30,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:30,989 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 06:53:30,990 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 06:53:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:31,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-19 06:53:31,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:31,148 INFO L349 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2024-11-19 06:53:31,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 39 [2024-11-19 06:53:31,219 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 15 treesize of output 1 [2024-11-19 06:53:31,410 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:31,411 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 31 treesize of output 25 [2024-11-19 06:53:31,513 INFO L349 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2024-11-19 06:53:31,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 108 [2024-11-19 06:53:31,528 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:31,529 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:31,529 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:31,534 INFO L349 Elim1Store]: treesize reduction 41, result has 2.4 percent of original size [2024-11-19 06:53:31,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 36 treesize of output 25 [2024-11-19 06:53:31,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:31,590 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:53:31,595 INFO L349 Elim1Store]: treesize reduction 33, result has 2.9 percent of original size [2024-11-19 06:53:31,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 27 treesize of output 7 [2024-11-19 06:53:32,034 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 06:53:32,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:32,273 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 06:53:36,308 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_create_~now~0#1.offset| 0)) (.cse2 (store (store |c_#valid| |c_ULTIMATE.start_create_~data~0#1.base| 0) |c_ULTIMATE.start_create_~sll~0#1.base| 0)) (.cse1 (= |c_ULTIMATE.start_create_~sll~0#1.base| |c_ULTIMATE.start_create_~now~0#1.base|)) (.cse3 (forall ((v_antiDerIndex_entry0_1 Int) (v_arrayElimCell_53 Int)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store (store |c_#valid| v_arrayElimCell_53 0) |c_ULTIMATE.start_create_~sll~0#1.base| 0) v_antiDerIndex_entry0_1))))) (and (or (not .cse0) (not .cse1) (forall ((v_antiDerIndex_entry0_1 Int)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select .cse2 v_antiDerIndex_entry0_1)))) (or .cse0 .cse3) (forall ((v_antiDerIndex_entry0_1 Int) (v_arrayElimCell_53 Int)) (let ((.cse4 (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1))) (or (= .cse4 (select .cse2 v_antiDerIndex_entry0_1)) (= .cse4 (select (store (store |c_#valid| v_arrayElimCell_53 0) |c_ULTIMATE.start_create_~sll~0#1.base| 0) v_antiDerIndex_entry0_1))))) (or .cse1 .cse3))) is different from false [2024-11-19 06:53:36,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771072339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:36,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:36,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 24 [2024-11-19 06:53:36,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450525343] [2024-11-19 06:53:36,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:36,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:53:36,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:36,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:53:36,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1030, Unknown=1, NotChecked=64, Total=1190 [2024-11-19 06:53:36,647 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand has 25 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 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 06:53:37,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:37,509 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2024-11-19 06:53:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:53:37,509 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 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 38 [2024-11-19 06:53:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:37,510 INFO L225 Difference]: With dead ends: 138 [2024-11-19 06:53:37,510 INFO L226 Difference]: Without dead ends: 114 [2024-11-19 06:53:37,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=156, Invalid=1487, Unknown=1, NotChecked=78, Total=1722 [2024-11-19 06:53:37,511 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:37,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 487 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 735 Invalid, 1 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:53:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-19 06:53:37,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-19 06:53:37,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 109 states have internal predecessors, (127), 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 06:53:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2024-11-19 06:53:37,514 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 38 [2024-11-19 06:53:37,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:37,515 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2024-11-19 06:53:37,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 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 06:53:37,515 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2024-11-19 06:53:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:53:37,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:37,516 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 06:53:37,531 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 06:53:37,716 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,SelfDestructingSolverStorable26 [2024-11-19 06:53:37,716 INFO L396 AbstractCegarLoop]: === Iteration 28 === 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 06:53:37,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash 814734249, now seen corresponding path program 1 times [2024-11-19 06:53:37,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:37,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845314392] [2024-11-19 06:53:37,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:37,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:38,105 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 06:53:38,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:38,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845314392] [2024-11-19 06:53:38,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845314392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:38,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281890930] [2024-11-19 06:53:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:38,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:38,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:38,108 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 06:53:38,110 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 06:53:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:38,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-19 06:53:38,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:38,446 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-19 06:53:38,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-19 06:53:38,498 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 15 treesize of output 1 [2024-11-19 06:53:38,580 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-19 06:53:38,580 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 34 treesize of output 33 [2024-11-19 06:53:38,748 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 25 treesize of output 13 [2024-11-19 06:53:38,807 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 06:53:38,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:38,979 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:38,980 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 20 treesize of output 21 [2024-11-19 06:53:38,985 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:38,986 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 34 treesize of output 37 [2024-11-19 06:53:38,998 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 5 [2024-11-19 06:53:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281890930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:39,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:39,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2024-11-19 06:53:39,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725658261] [2024-11-19 06:53:39,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:39,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 06:53:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 06:53:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1343, Unknown=3, NotChecked=0, Total=1482 [2024-11-19 06:53:39,200 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 28 states have internal predecessors, (68), 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 06:53:39,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:39,564 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2024-11-19 06:53:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 06:53:39,565 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 28 states have internal predecessors, (68), 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 39 [2024-11-19 06:53:39,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:39,565 INFO L225 Difference]: With dead ends: 119 [2024-11-19 06:53:39,565 INFO L226 Difference]: Without dead ends: 119 [2024-11-19 06:53:39,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=1555, Unknown=3, NotChecked=0, Total=1722 [2024-11-19 06:53:39,566 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 12 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:39,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 587 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:53:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-19 06:53:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2024-11-19 06:53:39,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.303030303030303) internal successors, (129), 110 states have internal predecessors, (129), 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 06:53:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2024-11-19 06:53:39,571 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 39 [2024-11-19 06:53:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:39,571 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2024-11-19 06:53:39,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 28 states have internal predecessors, (68), 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 06:53:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2024-11-19 06:53:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:53:39,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:39,572 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 06:53:39,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:39,776 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,SelfDestructingSolverStorable27 [2024-11-19 06:53:39,777 INFO L396 AbstractCegarLoop]: === Iteration 29 === 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 06:53:39,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 814734250, now seen corresponding path program 1 times [2024-11-19 06:53:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:39,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044865958] [2024-11-19 06:53:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:39,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:40,318 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 06:53:40,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:40,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044865958] [2024-11-19 06:53:40,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044865958] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:40,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431782577] [2024-11-19 06:53:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:40,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:40,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:40,321 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 06:53:40,321 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 06:53:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:40,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-19 06:53:40,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:40,639 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:40,639 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 06:53:40,680 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 06:53:40,685 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 15 treesize of output 1 [2024-11-19 06:53:40,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:40,765 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 56 [2024-11-19 06:53:40,769 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 39 treesize of output 11 [2024-11-19 06:53:40,945 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 25 treesize of output 13 [2024-11-19 06:53:40,948 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 7 treesize of output 3 [2024-11-19 06:53:40,957 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 06:53:40,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:41,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:53:41,178 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 63 treesize of output 67 [2024-11-19 06:53:41,491 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 164 treesize of output 156 [2024-11-19 06:53:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:41,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:41,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:41,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:41,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431782577] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:41,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:41,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 29 [2024-11-19 06:53:41,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021216521] [2024-11-19 06:53:41,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:41,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-19 06:53:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-19 06:53:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1344, Unknown=0, NotChecked=0, Total=1482 [2024-11-19 06:53:41,647 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 26 states have internal predecessors, (65), 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 06:53:42,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:42,027 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2024-11-19 06:53:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 06:53:42,027 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 26 states have internal predecessors, (65), 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 39 [2024-11-19 06:53:42,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:42,028 INFO L225 Difference]: With dead ends: 119 [2024-11-19 06:53:42,028 INFO L226 Difference]: Without dead ends: 119 [2024-11-19 06:53:42,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=1542, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 06:53:42,029 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:42,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 762 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:53:42,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-19 06:53:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-19 06:53:42,034 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 06:53:42,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2024-11-19 06:53:42,034 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 39 [2024-11-19 06:53:42,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:42,034 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2024-11-19 06:53:42,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 26 states have internal predecessors, (65), 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 06:53:42,035 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2024-11-19 06:53:42,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 06:53:42,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:42,035 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 06:53:42,053 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 06:53:42,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-19 06:53:42,240 INFO L396 AbstractCegarLoop]: === Iteration 30 === 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 06:53:42,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash 886407223, now seen corresponding path program 1 times [2024-11-19 06:53:42,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:42,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097603115] [2024-11-19 06:53:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:42,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:42,600 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 06:53:42,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:42,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097603115] [2024-11-19 06:53:42,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097603115] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:42,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852086516] [2024-11-19 06:53:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:53:42,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:42,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:42,603 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 06:53:42,604 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 06:53:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:53:42,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-19 06:53:42,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:42,939 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:42,940 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 06:53:42,985 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 15 treesize of output 1 [2024-11-19 06:53:42,992 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 06:53:43,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 06:53:43,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:43,067 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-19 06:53:43,196 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 24 treesize of output 12 [2024-11-19 06:53:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:53:43,248 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:53:47,351 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 82 treesize of output 78 [2024-11-19 06:53:47,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852086516] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:47,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:53:47,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 31 [2024-11-19 06:53:47,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791540687] [2024-11-19 06:53:47,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:53:47,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-19 06:53:47,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:53:47,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-19 06:53:47,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1077, Unknown=1, NotChecked=0, Total=1190 [2024-11-19 06:53:47,502 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 27 states have internal predecessors, (70), 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 06:53:47,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:53:47,807 INFO L93 Difference]: Finished difference Result 116 states and 135 transitions. [2024-11-19 06:53:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 06:53:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 27 states have internal predecessors, (70), 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 06:53:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:53:47,809 INFO L225 Difference]: With dead ends: 116 [2024-11-19 06:53:47,809 INFO L226 Difference]: Without dead ends: 116 [2024-11-19 06:53:47,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=152, Invalid=1329, Unknown=1, NotChecked=0, Total=1482 [2024-11-19 06:53:47,810 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 17 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:53:47,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 854 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:53:47,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-19 06:53:47,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-19 06:53:47,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 99 states have (on average 1.2828282828282829) internal successors, (127), 110 states have internal predecessors, (127), 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 06:53:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2024-11-19 06:53:47,821 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 42 [2024-11-19 06:53:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:53:47,821 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2024-11-19 06:53:47,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 27 states have internal predecessors, (70), 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 06:53:47,821 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2024-11-19 06:53:47,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 06:53:47,822 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:53:47,822 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 06:53:47,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 06:53:48,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:48,022 INFO L396 AbstractCegarLoop]: === Iteration 31 === 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 06:53:48,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:53:48,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1653040911, now seen corresponding path program 2 times [2024-11-19 06:53:48,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:53:48,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165974420] [2024-11-19 06:53:48,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:53:48,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:53:48,060 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:53:48,060 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:53:48,796 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 06:53:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:53:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165974420] [2024-11-19 06:53:48,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165974420] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:53:48,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444794336] [2024-11-19 06:53:48,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:53:48,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:53:48,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:53:48,798 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 06:53:48,799 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 06:53:48,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:53:48,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:53:48,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-11-19 06:53:48,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:53:49,086 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 06:53:49,090 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 06:53:49,122 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:53:49,123 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 06:53:49,189 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 06:53:49,204 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 06:53:49,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:49,336 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 06:53:49,336 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 93 treesize of output 66 [2024-11-19 06:53:49,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:53:49,349 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 50 treesize of output 25 [2024-11-19 06:53:49,707 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 06:53:49,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:54:08,915 INFO L349 Elim1Store]: treesize reduction 1419, result has 51.3 percent of original size [2024-11-19 06:54:08,916 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 10 new quantified variables, introduced 23 case distinctions, treesize of input 3620 treesize of output 3508 [2024-11-19 06:54:09,376 INFO L349 Elim1Store]: treesize reduction 192, result has 40.9 percent of original size [2024-11-19 06:54:09,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 5213 treesize of output 4301 [2024-11-19 06:54:09,739 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:54:09,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 3370 treesize of output 3440 [2024-11-19 06:54:12,630 INFO L349 Elim1Store]: treesize reduction 1329, result has 49.4 percent of original size [2024-11-19 06:54:12,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 16 new quantified variables, introduced 80 case distinctions, treesize of input 11945 treesize of output 7699 [2024-11-19 06:54:14,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:54:14,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 9455 treesize of output 9313