./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-nested-sll-inline.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f 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-nested-sll-inline.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 2a031cd83911a702ba38b9e8637ad5ead7999efd0a578b82d9c2168fee0ee72e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 13:33:17,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 13:33:17,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-12 13:33:17,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 13:33:17,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 13:33:17,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 13:33:17,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 13:33:17,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 13:33:17,542 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 13:33:17,545 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 13:33:17,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 13:33:17,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 13:33:17,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 13:33:17,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 13:33:17,547 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 13:33:17,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 13:33:17,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 13:33:17,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 13:33:17,548 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 13:33:17,548 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 13:33:17,548 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 13:33:17,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 13:33:17,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 13:33:17,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 13:33:17,550 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 13:33:17,550 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 13:33:17,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 13:33:17,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 13:33:17,551 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 13:33:17,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 13:33:17,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:33:17,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 13:33:17,551 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 13:33:17,551 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 13:33:17,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 13:33:17,552 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 13:33:17,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 13:33:17,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 13:33:17,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 13:33:17,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a031cd83911a702ba38b9e8637ad5ead7999efd0a578b82d9c2168fee0ee72e [2024-11-12 13:33:17,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 13:33:17,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 13:33:17,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 13:33:17,752 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 13:33:17,752 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 13:33:17,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-nested-sll-inline.i [2024-11-12 13:33:18,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 13:33:19,191 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 13:33:19,192 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-nested-sll-inline.i [2024-11-12 13:33:19,211 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49abd3a02/68712495405a474a99d3ac2e1bf2921d/FLAG5a57d11b7 [2024-11-12 13:33:19,222 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49abd3a02/68712495405a474a99d3ac2e1bf2921d [2024-11-12 13:33:19,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 13:33:19,225 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 13:33:19,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 13:33:19,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 13:33:19,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 13:33:19,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f07449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19, skipping insertion in model container [2024-11-12 13:33:19,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,272 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 13:33:19,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:33:19,565 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 13:33:19,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:33:19,613 INFO L204 MainTranslator]: Completed translation [2024-11-12 13:33:19,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19 WrapperNode [2024-11-12 13:33:19,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 13:33:19,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 13:33:19,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 13:33:19,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 13:33:19,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,647 INFO L138 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2024-11-12 13:33:19,648 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 13:33:19,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 13:33:19,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 13:33:19,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 13:33:19,662 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,684 INFO L175 MemorySlicer]: Split 18 memory accesses to 1 slices as follows [18]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 8 writes are split as follows [8]. [2024-11-12 13:33:19,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,690 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,696 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 13:33:19,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 13:33:19,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 13:33:19,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 13:33:19,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (1/1) ... [2024-11-12 13:33:19,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:33:19,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:19,734 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) [2024-11-12 13:33:19,736 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 [2024-11-12 13:33:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-12 13:33:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-12 13:33:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-12 13:33:19,776 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-12 13:33:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 13:33:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 13:33:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 13:33:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 13:33:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 13:33:19,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 13:33:19,884 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 13:33:19,886 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 13:33:20,195 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2024-11-12 13:33:20,195 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 13:33:20,211 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 13:33:20,213 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-12 13:33:20,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:33:20 BoogieIcfgContainer [2024-11-12 13:33:20,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 13:33:20,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 13:33:20,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 13:33:20,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 13:33:20,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:33:19" (1/3) ... [2024-11-12 13:33:20,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378ba3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:33:20, skipping insertion in model container [2024-11-12 13:33:20,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:33:19" (2/3) ... [2024-11-12 13:33:20,220 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378ba3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:33:20, skipping insertion in model container [2024-11-12 13:33:20,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:33:20" (3/3) ... [2024-11-12 13:33:20,221 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-nested-sll-inline.i [2024-11-12 13:33:20,234 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 13:33:20,234 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2024-11-12 13:33:20,273 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 13:33:20,278 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;@5d29c802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 13:33:20,278 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-11-12 13:33:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 64 states have (on average 1.890625) internal successors, (121), 107 states have internal predecessors, (121), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 13:33:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-12 13:33:20,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:20,286 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 13:33:20,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:20,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:20,290 INFO L85 PathProgramCache]: Analyzing trace with hash 37454016, now seen corresponding path program 1 times [2024-11-12 13:33:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:20,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169161534] [2024-11-12 13:33:20,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:20,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:20,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169161534] [2024-11-12 13:33:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169161534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:20,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:20,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:33:20,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317138602] [2024-11-12 13:33:20,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:20,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:33:20,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:20,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:33:20,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:33:20,502 INFO L87 Difference]: Start difference. First operand has 116 states, 64 states have (on average 1.890625) internal successors, (121), 107 states have internal predecessors, (121), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2024-11-12 13:33:20,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:20,621 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2024-11-12 13:33:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:33:20,623 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 [2024-11-12 13:33:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:20,628 INFO L225 Difference]: With dead ends: 114 [2024-11-12 13:33:20,628 INFO L226 Difference]: Without dead ends: 112 [2024-11-12 13:33:20,629 INFO L434 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 [2024-11-12 13:33:20,632 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 2 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:20,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-12 13:33:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-12 13:33:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 63 states have (on average 1.746031746031746) internal successors, (110), 103 states have internal predecessors, (110), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 13:33:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2024-11-12 13:33:20,667 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 5 [2024-11-12 13:33:20,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:20,668 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2024-11-12 13:33:20,668 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) [2024-11-12 13:33:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2024-11-12 13:33:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-12 13:33:20,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:20,668 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-12 13:33:20,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 13:33:20,669 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash 37454017, now seen corresponding path program 1 times [2024-11-12 13:33:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129466974] [2024-11-12 13:33:20,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:20,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:20,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129466974] [2024-11-12 13:33:20,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129466974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:20,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:20,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:33:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400288267] [2024-11-12 13:33:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:20,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:33:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:20,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:33:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:33:20,753 INFO L87 Difference]: Start difference. First operand 112 states and 122 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) [2024-11-12 13:33:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:20,822 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2024-11-12 13:33:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:33:20,822 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 [2024-11-12 13:33:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:20,823 INFO L225 Difference]: With dead ends: 110 [2024-11-12 13:33:20,823 INFO L226 Difference]: Without dead ends: 110 [2024-11-12 13:33:20,824 INFO L434 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 [2024-11-12 13:33:20,824 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 2 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:20,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 200 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-12 13:33:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-12 13:33:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 63 states have (on average 1.7142857142857142) internal successors, (108), 101 states have internal predecessors, (108), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 13:33:20,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2024-11-12 13:33:20,834 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 5 [2024-11-12 13:33:20,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:20,834 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2024-11-12 13:33:20,834 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) [2024-11-12 13:33:20,834 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2024-11-12 13:33:20,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 13:33:20,835 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:20,835 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:20,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 13:33:20,837 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting alloc_and_zero_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:20,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1745349388, now seen corresponding path program 1 times [2024-11-12 13:33:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:20,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252611893] [2024-11-12 13:33:20,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:20,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:20,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:20,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:20,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:20,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252611893] [2024-11-12 13:33:20,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252611893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:20,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:20,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:33:20,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3198941] [2024-11-12 13:33:20,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:20,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:33:20,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:20,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:33:20,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:33:20,975 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 13:33:21,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:21,085 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2024-11-12 13:33:21,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:33:21,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-12 13:33:21,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:21,087 INFO L225 Difference]: With dead ends: 109 [2024-11-12 13:33:21,088 INFO L226 Difference]: Without dead ends: 109 [2024-11-12 13:33:21,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:33:21,092 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 1 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:21,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 243 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-12 13:33:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-12 13:33:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 63 states have (on average 1.6984126984126984) internal successors, (107), 100 states have internal predecessors, (107), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 13:33:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2024-11-12 13:33:21,102 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 13 [2024-11-12 13:33:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:21,104 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2024-11-12 13:33:21,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 13:33:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2024-11-12 13:33:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 13:33:21,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:21,105 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:21,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 13:33:21,105 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting alloc_and_zero_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:21,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1745349387, now seen corresponding path program 1 times [2024-11-12 13:33:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:21,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221606120] [2024-11-12 13:33:21,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:21,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:21,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221606120] [2024-11-12 13:33:21,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221606120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:21,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:21,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 13:33:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496582830] [2024-11-12 13:33:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:21,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 13:33:21,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 13:33:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:33:21,230 INFO L87 Difference]: Start difference. First operand 109 states and 119 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 13:33:21,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:21,323 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2024-11-12 13:33:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 13:33:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-12 13:33:21,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:21,324 INFO L225 Difference]: With dead ends: 108 [2024-11-12 13:33:21,325 INFO L226 Difference]: Without dead ends: 108 [2024-11-12 13:33:21,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 13:33:21,325 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 1 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:21,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 250 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-12 13:33:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-12 13:33:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 63 states have (on average 1.6825396825396826) internal successors, (106), 99 states have internal predecessors, (106), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-12 13:33:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 118 transitions. [2024-11-12 13:33:21,337 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 118 transitions. Word has length 13 [2024-11-12 13:33:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:21,337 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 118 transitions. [2024-11-12 13:33:21,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 13:33:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 118 transitions. [2024-11-12 13:33:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-12 13:33:21,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:21,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:21,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 13:33:21,339 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:21,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash -41890107, now seen corresponding path program 1 times [2024-11-12 13:33:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706728682] [2024-11-12 13:33:21,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:21,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:21,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:21,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:21,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706728682] [2024-11-12 13:33:21,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706728682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:21,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 13:33:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823544540] [2024-11-12 13:33:21,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:21,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 13:33:21,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:21,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 13:33:21,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 13:33:21,632 INFO L87 Difference]: Start difference. First operand 108 states and 118 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:21,870 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2024-11-12 13:33:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 13:33:21,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 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 20 [2024-11-12 13:33:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:21,871 INFO L225 Difference]: With dead ends: 111 [2024-11-12 13:33:21,871 INFO L226 Difference]: Without dead ends: 111 [2024-11-12 13:33:21,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:33:21,872 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 37 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:21,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 352 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:33:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-12 13:33:21,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2024-11-12 13:33:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 66 states have (on average 1.6363636363636365) internal successors, (108), 99 states have internal predecessors, (108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-12 13:33:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2024-11-12 13:33:21,881 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 20 [2024-11-12 13:33:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:21,881 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2024-11-12 13:33:21,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2024-11-12 13:33:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-12 13:33:21,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:21,882 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:21,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 13:33:21,882 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:21,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash -41890106, now seen corresponding path program 1 times [2024-11-12 13:33:21,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:21,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819852731] [2024-11-12 13:33:21,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:21,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:22,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:22,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819852731] [2024-11-12 13:33:22,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819852731] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:22,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:22,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 13:33:22,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114120770] [2024-11-12 13:33:22,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:22,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 13:33:22,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:22,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 13:33:22,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:33:22,207 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:22,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:22,543 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2024-11-12 13:33:22,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:33:22,544 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 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 20 [2024-11-12 13:33:22,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:22,546 INFO L225 Difference]: With dead ends: 131 [2024-11-12 13:33:22,546 INFO L226 Difference]: Without dead ends: 131 [2024-11-12 13:33:22,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-12 13:33:22,547 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 18 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:22,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 424 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:33:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-12 13:33:22,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2024-11-12 13:33:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 80 states have (on average 1.5875) internal successors, (127), 113 states have internal predecessors, (127), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-12 13:33:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 145 transitions. [2024-11-12 13:33:22,562 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 145 transitions. Word has length 20 [2024-11-12 13:33:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:22,562 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 145 transitions. [2024-11-12 13:33:22,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:22,562 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 145 transitions. [2024-11-12 13:33:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 13:33:22,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:22,563 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:22,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 13:33:22,564 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:22,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1778250375, now seen corresponding path program 1 times [2024-11-12 13:33:22,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174457501] [2024-11-12 13:33:22,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:33:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:22,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:22,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174457501] [2024-11-12 13:33:22,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174457501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:22,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947005599] [2024-11-12 13:33:22,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:22,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:22,751 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) [2024-11-12 13:33:22,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 13:33:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:22,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 13:33:22,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:22,872 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 [2024-11-12 13:33:22,908 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1))) is different from true [2024-11-12 13:33:22,935 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-12 13:33:22,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-12 13:33:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-12 13:33:22,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:23,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947005599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:33:23,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:33:23,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 11 [2024-11-12 13:33:23,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208252625] [2024-11-12 13:33:23,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:23,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 13:33:23,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:23,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 13:33:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-11-12 13:33:23,077 INFO L87 Difference]: Start difference. First operand 125 states and 145 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 13:33:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:23,348 INFO L93 Difference]: Finished difference Result 127 states and 149 transitions. [2024-11-12 13:33:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 13:33:23,349 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2024-11-12 13:33:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:23,350 INFO L225 Difference]: With dead ends: 127 [2024-11-12 13:33:23,351 INFO L226 Difference]: Without dead ends: 127 [2024-11-12 13:33:23,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=119, Unknown=1, NotChecked=22, Total=182 [2024-11-12 13:33:23,352 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 15 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:23,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 511 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 369 Invalid, 0 Unknown, 129 Unchecked, 0.2s Time] [2024-11-12 13:33:23,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-12 13:33:23,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-12 13:33:23,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 81 states have (on average 1.5679012345679013) internal successors, (127), 112 states have internal predecessors, (127), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:33:23,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2024-11-12 13:33:23,362 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 26 [2024-11-12 13:33:23,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:23,363 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2024-11-12 13:33:23,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 9 states have internal predecessors, (31), 2 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 13:33:23,363 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2024-11-12 13:33:23,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 13:33:23,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:23,363 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:23,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 13:33:23,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:23,565 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:23,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:23,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1778250374, now seen corresponding path program 1 times [2024-11-12 13:33:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:23,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658562992] [2024-11-12 13:33:23,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:23,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:23,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:23,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:33:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:23,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:23,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658562992] [2024-11-12 13:33:23,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658562992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:23,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513699449] [2024-11-12 13:33:23,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:23,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:23,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:23,844 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) [2024-11-12 13:33:23,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 13:33:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:23,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-12 13:33:23,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:23,918 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 [2024-11-12 13:33:24,001 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-12 13:33:24,019 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-12 13:33:24,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-12 13:33:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-12 13:33:24,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:24,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513699449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:33:24,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:33:24,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-11-12 13:33:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245117251] [2024-11-12 13:33:24,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:24,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-12 13:33:24,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:24,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-12 13:33:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2024-11-12 13:33:24,172 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 13 states have internal predecessors, (40), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-12 13:33:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:24,476 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2024-11-12 13:33:24,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:33:24,476 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 13 states have internal predecessors, (40), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2024-11-12 13:33:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:24,478 INFO L225 Difference]: With dead ends: 127 [2024-11-12 13:33:24,478 INFO L226 Difference]: Without dead ends: 127 [2024-11-12 13:33:24,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=282, Unknown=1, NotChecked=34, Total=380 [2024-11-12 13:33:24,479 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 24 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:24,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 748 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 449 Invalid, 0 Unknown, 128 Unchecked, 0.3s Time] [2024-11-12 13:33:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-12 13:33:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2024-11-12 13:33:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.5308641975308641) internal successors, (124), 110 states have internal predecessors, (124), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:33:24,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2024-11-12 13:33:24,488 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 26 [2024-11-12 13:33:24,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:24,488 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2024-11-12 13:33:24,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 13 states have internal predecessors, (40), 3 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (6), 6 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-12 13:33:24,489 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2024-11-12 13:33:24,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 13:33:24,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:24,490 INFO L218 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] [2024-11-12 13:33:24,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 13:33:24,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-12 13:33:24,695 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:24,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash -250718133, now seen corresponding path program 1 times [2024-11-12 13:33:24,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:24,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186955061] [2024-11-12 13:33:24,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:24,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:24,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:24,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:24,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:24,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:24,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186955061] [2024-11-12 13:33:24,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186955061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:24,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:24,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 13:33:24,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835660094] [2024-11-12 13:33:24,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:24,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 13:33:24,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 13:33:24,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 13:33:24,782 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-12 13:33:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:24,926 INFO L93 Difference]: Finished difference Result 150 states and 179 transitions. [2024-11-12 13:33:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 13:33:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) Word has length 26 [2024-11-12 13:33:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:24,927 INFO L225 Difference]: With dead ends: 150 [2024-11-12 13:33:24,927 INFO L226 Difference]: Without dead ends: 150 [2024-11-12 13:33:24,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-12 13:33:24,928 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:24,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 386 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:24,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-12 13:33:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 143. [2024-11-12 13:33:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 100 states have (on average 1.52) internal successors, (152), 128 states have internal predecessors, (152), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-12 13:33:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 176 transitions. [2024-11-12 13:33:24,934 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 176 transitions. Word has length 26 [2024-11-12 13:33:24,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:24,934 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 176 transitions. [2024-11-12 13:33:24,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-11-12 13:33:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 176 transitions. [2024-11-12 13:33:24,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 13:33:24,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:24,936 INFO L218 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] [2024-11-12 13:33:24,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 13:33:24,936 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:24,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:24,937 INFO L85 PathProgramCache]: Analyzing trace with hash -250718132, now seen corresponding path program 1 times [2024-11-12 13:33:24,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:24,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741436763] [2024-11-12 13:33:24,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:24,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:25,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:25,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741436763] [2024-11-12 13:33:25,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741436763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:25,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:25,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 13:33:25,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146918884] [2024-11-12 13:33:25,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:25,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 13:33:25,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:25,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 13:33:25,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:33:25,099 INFO L87 Difference]: Start difference. First operand 143 states and 176 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:25,267 INFO L93 Difference]: Finished difference Result 158 states and 189 transitions. [2024-11-12 13:33:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:33:25,267 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 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 26 [2024-11-12 13:33:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:25,269 INFO L225 Difference]: With dead ends: 158 [2024-11-12 13:33:25,269 INFO L226 Difference]: Without dead ends: 158 [2024-11-12 13:33:25,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-12 13:33:25,270 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 37 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:25,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 671 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:33:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-12 13:33:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2024-11-12 13:33:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 109 states have (on average 1.5137614678899083) internal successors, (165), 137 states have internal predecessors, (165), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-12 13:33:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 189 transitions. [2024-11-12 13:33:25,276 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 189 transitions. Word has length 26 [2024-11-12 13:33:25,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:25,276 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 189 transitions. [2024-11-12 13:33:25,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:25,276 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 189 transitions. [2024-11-12 13:33:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-12 13:33:25,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:25,278 INFO L218 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] [2024-11-12 13:33:25,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 13:33:25,279 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:25,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash -421987287, now seen corresponding path program 1 times [2024-11-12 13:33:25,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:25,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741503888] [2024-11-12 13:33:25,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:25,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:25,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:25,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741503888] [2024-11-12 13:33:25,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741503888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:25,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:25,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 13:33:25,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545590487] [2024-11-12 13:33:25,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:25,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 13:33:25,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 13:33:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-12 13:33:25,382 INFO L87 Difference]: Start difference. First operand 152 states and 189 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:25,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:25,476 INFO L93 Difference]: Finished difference Result 161 states and 200 transitions. [2024-11-12 13:33:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 13:33:25,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 1 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 28 [2024-11-12 13:33:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:25,477 INFO L225 Difference]: With dead ends: 161 [2024-11-12 13:33:25,477 INFO L226 Difference]: Without dead ends: 161 [2024-11-12 13:33:25,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-12 13:33:25,478 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 41 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:25,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 689 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-12 13:33:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2024-11-12 13:33:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 110 states have (on average 1.490909090909091) internal successors, (164), 138 states have internal predecessors, (164), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-12 13:33:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 188 transitions. [2024-11-12 13:33:25,482 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 188 transitions. Word has length 28 [2024-11-12 13:33:25,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:25,482 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 188 transitions. [2024-11-12 13:33:25,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 188 transitions. [2024-11-12 13:33:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-12 13:33:25,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:25,484 INFO L218 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] [2024-11-12 13:33:25,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 13:33:25,484 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:25,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -195693723, now seen corresponding path program 1 times [2024-11-12 13:33:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044590561] [2024-11-12 13:33:25,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:25,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:25,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044590561] [2024-11-12 13:33:25,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044590561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:25,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:25,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-12 13:33:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726939386] [2024-11-12 13:33:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:25,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-12 13:33:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-12 13:33:25,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2024-11-12 13:33:25,788 INFO L87 Difference]: Start difference. First operand 153 states and 188 transitions. Second operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:26,127 INFO L93 Difference]: Finished difference Result 170 states and 204 transitions. [2024-11-12 13:33:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 13:33:26,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (2), 1 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 29 [2024-11-12 13:33:26,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:26,129 INFO L225 Difference]: With dead ends: 170 [2024-11-12 13:33:26,129 INFO L226 Difference]: Without dead ends: 170 [2024-11-12 13:33:26,129 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-12 13:33:26,129 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 48 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:26,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 899 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:33:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-12 13:33:26,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160. [2024-11-12 13:33:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 117 states have (on average 1.4786324786324787) internal successors, (173), 145 states have internal predecessors, (173), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-12 13:33:26,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2024-11-12 13:33:26,133 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 29 [2024-11-12 13:33:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:26,133 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 197 transitions. [2024-11-12 13:33:26,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 197 transitions. [2024-11-12 13:33:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-12 13:33:26,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:26,134 INFO L218 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] [2024-11-12 13:33:26,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 13:33:26,134 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:26,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:26,134 INFO L85 PathProgramCache]: Analyzing trace with hash -195693722, now seen corresponding path program 1 times [2024-11-12 13:33:26,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:26,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098083209] [2024-11-12 13:33:26,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:26,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:26,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:26,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:26,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098083209] [2024-11-12 13:33:26,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098083209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:26,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:26,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-12 13:33:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091213340] [2024-11-12 13:33:26,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:26,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 13:33:26,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 13:33:26,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2024-11-12 13:33:26,566 INFO L87 Difference]: Start difference. First operand 160 states and 197 transitions. Second operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:26,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:26,894 INFO L93 Difference]: Finished difference Result 170 states and 203 transitions. [2024-11-12 13:33:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-12 13:33:26,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 1 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 29 [2024-11-12 13:33:26,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:26,895 INFO L225 Difference]: With dead ends: 170 [2024-11-12 13:33:26,895 INFO L226 Difference]: Without dead ends: 170 [2024-11-12 13:33:26,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-12 13:33:26,896 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 48 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:26,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 976 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:33:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-12 13:33:26,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160. [2024-11-12 13:33:26,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 117 states have (on average 1.4700854700854702) internal successors, (172), 145 states have internal predecessors, (172), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-12 13:33:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 196 transitions. [2024-11-12 13:33:26,900 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 196 transitions. Word has length 29 [2024-11-12 13:33:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:26,900 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 196 transitions. [2024-11-12 13:33:26,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:26,900 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 196 transitions. [2024-11-12 13:33:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 13:33:26,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:26,901 INFO L218 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] [2024-11-12 13:33:26,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-12 13:33:26,902 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:26,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1046876508, now seen corresponding path program 1 times [2024-11-12 13:33:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144470858] [2024-11-12 13:33:26,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:27,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:27,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:27,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:33:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:27,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144470858] [2024-11-12 13:33:27,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144470858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919756048] [2024-11-12 13:33:27,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:27,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:27,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:27,234 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) [2024-11-12 13:33:27,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 13:33:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:27,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-12 13:33:27,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:27,324 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 [2024-11-12 13:33:27,328 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 [2024-11-12 13:33:27,429 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1)))) is different from true [2024-11-12 13:33:27,467 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-12 13:33:27,468 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 [2024-11-12 13:33:27,473 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 [2024-11-12 13:33:27,540 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base (select |c_#length| alloc_and_zero_internal_~pi~1.base)) |c_#length|) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-12 13:33:27,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:33:27,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-12 13:33:27,577 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-12 13:33:27,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-12 13:33:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-12 13:33:27,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:27,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919756048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:27,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 13:33:27,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-12 13:33:27,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398914230] [2024-11-12 13:33:27,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:27,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 13:33:27,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:27,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 13:33:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=396, Unknown=2, NotChecked=82, Total=552 [2024-11-12 13:33:27,720 INFO L87 Difference]: Start difference. First operand 160 states and 196 transitions. Second operand has 22 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-12 13:33:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:28,269 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2024-11-12 13:33:28,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:33:28,270 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 32 [2024-11-12 13:33:28,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:28,270 INFO L225 Difference]: With dead ends: 163 [2024-11-12 13:33:28,270 INFO L226 Difference]: Without dead ends: 163 [2024-11-12 13:33:28,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=699, Unknown=3, NotChecked=110, Total=930 [2024-11-12 13:33:28,271 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 119 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:28,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 539 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 528 Invalid, 0 Unknown, 268 Unchecked, 0.3s Time] [2024-11-12 13:33:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-12 13:33:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 148. [2024-11-12 13:33:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 135 states have internal predecessors, (156), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:33:28,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2024-11-12 13:33:28,275 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 32 [2024-11-12 13:33:28,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:28,275 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2024-11-12 13:33:28,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 4 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-12 13:33:28,275 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2024-11-12 13:33:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 13:33:28,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:28,275 INFO L218 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] [2024-11-12 13:33:28,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 13:33:28,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:28,476 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:28,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1642622186, now seen corresponding path program 1 times [2024-11-12 13:33:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791672202] [2024-11-12 13:33:28,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:28,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:28,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:28,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:28,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791672202] [2024-11-12 13:33:28,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791672202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:28,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185976669] [2024-11-12 13:33:28,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:28,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:28,985 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) [2024-11-12 13:33:28,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 13:33:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:29,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-12 13:33:29,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:29,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 13:33:29,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-12 13:33:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:29,268 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 13:33:29,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185976669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:29,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 13:33:29,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2024-11-12 13:33:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702501809] [2024-11-12 13:33:29,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:29,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 13:33:29,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 13:33:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2024-11-12 13:33:29,270 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:29,442 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2024-11-12 13:33:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 13:33:29,442 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 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 32 [2024-11-12 13:33:29,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:29,443 INFO L225 Difference]: With dead ends: 156 [2024-11-12 13:33:29,443 INFO L226 Difference]: Without dead ends: 156 [2024-11-12 13:33:29,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2024-11-12 13:33:29,444 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 40 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:29,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 927 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:29,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-12 13:33:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 149. [2024-11-12 13:33:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 109 states have (on average 1.4311926605504588) internal successors, (156), 136 states have internal predecessors, (156), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:33:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2024-11-12 13:33:29,449 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 32 [2024-11-12 13:33:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:29,450 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2024-11-12 13:33:29,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2024-11-12 13:33:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 13:33:29,450 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:29,450 INFO L218 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] [2024-11-12 13:33:29,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 13:33:29,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-12 13:33:29,651 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:29,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1640989992, now seen corresponding path program 1 times [2024-11-12 13:33:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595518364] [2024-11-12 13:33:29,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:30,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:30,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:30,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:30,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595518364] [2024-11-12 13:33:30,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595518364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:30,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902973306] [2024-11-12 13:33:30,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:30,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:30,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:30,271 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) [2024-11-12 13:33:30,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 13:33:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:30,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-12 13:33:30,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:30,361 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 [2024-11-12 13:33:30,466 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 [2024-11-12 13:33:30,470 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 [2024-11-12 13:33:30,537 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 13:33:30,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-12 13:33:30,640 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 33 treesize of output 17 [2024-11-12 13:33:30,644 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 33 treesize of output 17 [2024-11-12 13:33:30,912 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 13:33:30,917 INFO L349 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2024-11-12 13:33:30,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 31 [2024-11-12 13:33:30,927 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-12 13:33:30,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 16 [2024-11-12 13:33:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:33:30,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:32,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:33:32,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 785 treesize of output 781 [2024-11-12 13:33:32,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:33:32,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 814 treesize of output 846 [2024-11-12 13:33:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902973306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:50,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 13:33:50,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 33 [2024-11-12 13:33:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030027031] [2024-11-12 13:33:50,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:50,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-12 13:33:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:50,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-12 13:33:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2024-11-12 13:33:50,417 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 27 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 13:33:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:51,316 INFO L93 Difference]: Finished difference Result 153 states and 181 transitions. [2024-11-12 13:33:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-12 13:33:51,317 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 27 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2024-11-12 13:33:51,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:51,317 INFO L225 Difference]: With dead ends: 153 [2024-11-12 13:33:51,317 INFO L226 Difference]: Without dead ends: 153 [2024-11-12 13:33:51,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=157, Invalid=2099, Unknown=0, NotChecked=0, Total=2256 [2024-11-12 13:33:51,318 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 18 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:51,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2068 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 13:33:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-12 13:33:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2024-11-12 13:33:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.4234234234234233) internal successors, (158), 138 states have internal predecessors, (158), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:33:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2024-11-12 13:33:51,322 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 32 [2024-11-12 13:33:51,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:51,322 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2024-11-12 13:33:51,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 27 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 13:33:51,322 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2024-11-12 13:33:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-12 13:33:51,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:51,322 INFO L218 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] [2024-11-12 13:33:51,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-12 13:33:51,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 13:33:51,527 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:51,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:51,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1416629565, now seen corresponding path program 1 times [2024-11-12 13:33:51,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:51,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166290219] [2024-11-12 13:33:51,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:51,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:51,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:52,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166290219] [2024-11-12 13:33:52,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166290219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:52,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633074051] [2024-11-12 13:33:52,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:52,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:52,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:52,079 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) [2024-11-12 13:33:52,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 13:33:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:52,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-12 13:33:52,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:52,176 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 [2024-11-12 13:33:52,197 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 [2024-11-12 13:33:52,202 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 [2024-11-12 13:33:52,211 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 11 [2024-11-12 13:33:52,217 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 11 [2024-11-12 13:33:52,345 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0) (= |c_#memory_$Pointer$#0.base| (store |c_old(#memory_$Pointer$#0.base)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.base| alloc_and_zero_internal_~pi~1.base))) (= (store |c_old(#memory_$Pointer$#0.offset)| alloc_and_zero_internal_~pi~1.base (select |c_#memory_$Pointer$#0.offset| alloc_and_zero_internal_~pi~1.base)) |c_#memory_$Pointer$#0.offset|))) is different from true [2024-11-12 13:33:52,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:33:52,365 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 [2024-11-12 13:33:52,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:33:52,369 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 [2024-11-12 13:33:52,375 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 13:33:52,375 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 [2024-11-12 13:33:52,446 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-12 13:33:52,447 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 [2024-11-12 13:33:52,463 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-12 13:33:52,463 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 [2024-11-12 13:33:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:52,601 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633074051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:53,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 13:33:53,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 28 [2024-11-12 13:33:53,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787030324] [2024-11-12 13:33:53,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:53,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-12 13:33:53,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-12 13:33:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=903, Unknown=1, NotChecked=60, Total=1056 [2024-11-12 13:33:53,029 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand has 28 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 13:33:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:53,725 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions. [2024-11-12 13:33:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-12 13:33:53,726 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2024-11-12 13:33:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:53,726 INFO L225 Difference]: With dead ends: 155 [2024-11-12 13:33:53,726 INFO L226 Difference]: Without dead ends: 155 [2024-11-12 13:33:53,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=1340, Unknown=1, NotChecked=74, Total=1560 [2024-11-12 13:33:53,727 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 14 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:53,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1417 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 834 Invalid, 0 Unknown, 129 Unchecked, 0.4s Time] [2024-11-12 13:33:53,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-12 13:33:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2024-11-12 13:33:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 114 states have (on average 1.412280701754386) internal successors, (161), 141 states have internal predecessors, (161), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:33:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 181 transitions. [2024-11-12 13:33:53,730 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 181 transitions. Word has length 35 [2024-11-12 13:33:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:53,730 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 181 transitions. [2024-11-12 13:33:53,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 13:33:53,731 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 181 transitions. [2024-11-12 13:33:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-12 13:33:53,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:53,731 INFO L218 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, 1, 1] [2024-11-12 13:33:53,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 13:33:53,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 13:33:53,935 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:53,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:53,936 INFO L85 PathProgramCache]: Analyzing trace with hash 827623311, now seen corresponding path program 1 times [2024-11-12 13:33:53,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:53,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580480781] [2024-11-12 13:33:53,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:53,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:33:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-12 13:33:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,099 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 13:33:54,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580480781] [2024-11-12 13:33:54,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580480781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:54,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848459290] [2024-11-12 13:33:54,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:54,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:54,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:54,102 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) [2024-11-12 13:33:54,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 13:33:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-12 13:33:54,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:54,200 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 [2024-11-12 13:33:54,209 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 [2024-11-12 13:33:54,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 13:33:54,231 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base 1))) is different from true [2024-11-12 13:33:54,242 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-12 13:33:54,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-12 13:33:54,249 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-12 13:33:54,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:54,332 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:54,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848459290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:33:54,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:33:54,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 13 [2024-11-12 13:33:54,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727704281] [2024-11-12 13:33:54,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:54,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 13:33:54,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:54,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 13:33:54,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-12 13:33:54,335 INFO L87 Difference]: Start difference. First operand 154 states and 181 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 13:33:54,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:54,595 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2024-11-12 13:33:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 13:33:54,595 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-11-12 13:33:54,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:54,596 INFO L225 Difference]: With dead ends: 158 [2024-11-12 13:33:54,596 INFO L226 Difference]: Without dead ends: 158 [2024-11-12 13:33:54,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=223, Unknown=1, NotChecked=30, Total=306 [2024-11-12 13:33:54,596 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 15 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:54,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 662 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 449 Invalid, 0 Unknown, 123 Unchecked, 0.2s Time] [2024-11-12 13:33:54,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-12 13:33:54,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2024-11-12 13:33:54,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 114 states have (on average 1.4035087719298245) internal successors, (160), 140 states have internal predecessors, (160), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:33:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2024-11-12 13:33:54,600 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 38 [2024-11-12 13:33:54,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:54,600 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2024-11-12 13:33:54,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 11 states have internal predecessors, (41), 2 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-12 13:33:54,601 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2024-11-12 13:33:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-12 13:33:54,601 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:54,601 INFO L218 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, 1, 1] [2024-11-12 13:33:54,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 13:33:54,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:54,804 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:54,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash 827623312, now seen corresponding path program 1 times [2024-11-12 13:33:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122421511] [2024-11-12 13:33:54,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:54,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:33:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:54,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-12 13:33:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:55,034 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 13:33:55,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:55,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122421511] [2024-11-12 13:33:55,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122421511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:55,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976583764] [2024-11-12 13:33:55,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:55,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:55,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:55,036 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) [2024-11-12 13:33:55,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 13:33:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:55,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-12 13:33:55,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:55,124 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 [2024-11-12 13:33:55,139 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 [2024-11-12 13:33:55,141 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 [2024-11-12 13:33:55,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 13:33:55,164 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= (store |c_old(#length)| alloc_and_zero_internal_~pi~1.base 8) |c_#length|)) is different from true [2024-11-12 13:33:55,178 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-12 13:33:55,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-12 13:33:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-12 13:33:55,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:55,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976583764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:55,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 13:33:55,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2024-11-12 13:33:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285495054] [2024-11-12 13:33:55,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:55,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 13:33:55,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 13:33:55,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2024-11-12 13:33:55,227 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 13:33:55,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:55,429 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions. [2024-11-12 13:33:55,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 13:33:55,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2024-11-12 13:33:55,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:55,430 INFO L225 Difference]: With dead ends: 155 [2024-11-12 13:33:55,430 INFO L226 Difference]: Without dead ends: 155 [2024-11-12 13:33:55,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=254, Unknown=1, NotChecked=32, Total=342 [2024-11-12 13:33:55,430 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 8 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:55,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 691 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 386 Invalid, 0 Unknown, 119 Unchecked, 0.2s Time] [2024-11-12 13:33:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-12 13:33:55,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2024-11-12 13:33:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 113 states have (on average 1.3982300884955752) internal successors, (158), 138 states have internal predecessors, (158), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-12 13:33:55,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 176 transitions. [2024-11-12 13:33:55,433 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 176 transitions. Word has length 38 [2024-11-12 13:33:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:55,433 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 176 transitions. [2024-11-12 13:33:55,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 10 states have internal predecessors, (37), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-12 13:33:55,434 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 176 transitions. [2024-11-12 13:33:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-12 13:33:55,434 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:55,434 INFO L218 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] [2024-11-12 13:33:55,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-12 13:33:55,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:55,635 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:55,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash 123590817, now seen corresponding path program 1 times [2024-11-12 13:33:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:55,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159621723] [2024-11-12 13:33:55,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:55,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:55,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:55,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 13:33:55,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:55,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159621723] [2024-11-12 13:33:55,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159621723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:55,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:55,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 13:33:55,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419202618] [2024-11-12 13:33:55,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:55,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 13:33:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 13:33:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 13:33:55,704 INFO L87 Difference]: Start difference. First operand 150 states and 176 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2024-11-12 13:33:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:55,859 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2024-11-12 13:33:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 13:33:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) Word has length 37 [2024-11-12 13:33:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:55,860 INFO L225 Difference]: With dead ends: 185 [2024-11-12 13:33:55,860 INFO L226 Difference]: Without dead ends: 185 [2024-11-12 13:33:55,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 13:33:55,861 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 58 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:55,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 421 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-12 13:33:55,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 164. [2024-11-12 13:33:55,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 128 states have (on average 1.4375) internal successors, (184), 152 states have internal predecessors, (184), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-12 13:33:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 202 transitions. [2024-11-12 13:33:55,864 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 202 transitions. Word has length 37 [2024-11-12 13:33:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:55,864 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 202 transitions. [2024-11-12 13:33:55,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 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) [2024-11-12 13:33:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 202 transitions. [2024-11-12 13:33:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-12 13:33:55,865 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:55,865 INFO L218 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] [2024-11-12 13:33:55,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 13:33:55,865 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:55,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash 123590818, now seen corresponding path program 1 times [2024-11-12 13:33:55,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:55,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073090698] [2024-11-12 13:33:55,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:55,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:55,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:56,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073090698] [2024-11-12 13:33:56,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073090698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:56,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329409379] [2024-11-12 13:33:56,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:56,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:56,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:56,040 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) [2024-11-12 13:33:56,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 13:33:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:56,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-12 13:33:56,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:56,137 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 [2024-11-12 13:33:56,140 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 [2024-11-12 13:33:56,273 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 13:33:56,273 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 [2024-11-12 13:33:56,276 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 [2024-11-12 13:33:56,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 13:33:56,442 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-12 13:33:56,442 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-12 13:33:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:33:56,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:56,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329409379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:56,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-12 13:33:56,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 25 [2024-11-12 13:33:56,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493366593] [2024-11-12 13:33:56,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:56,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-12 13:33:56,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:56,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-12 13:33:56,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2024-11-12 13:33:56,741 INFO L87 Difference]: Start difference. First operand 164 states and 202 transitions. Second operand has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 21 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 13:33:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:57,513 INFO L93 Difference]: Finished difference Result 205 states and 244 transitions. [2024-11-12 13:33:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-12 13:33:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 21 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2024-11-12 13:33:57,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:57,514 INFO L225 Difference]: With dead ends: 205 [2024-11-12 13:33:57,514 INFO L226 Difference]: Without dead ends: 205 [2024-11-12 13:33:57,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2024-11-12 13:33:57,515 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 87 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:57,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 1302 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 13:33:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-12 13:33:57,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 187. [2024-11-12 13:33:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 151 states have (on average 1.4701986754966887) internal successors, (222), 175 states have internal predecessors, (222), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-12 13:33:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 240 transitions. [2024-11-12 13:33:57,518 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 240 transitions. Word has length 37 [2024-11-12 13:33:57,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:57,518 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 240 transitions. [2024-11-12 13:33:57,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 21 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 13:33:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 240 transitions. [2024-11-12 13:33:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-12 13:33:57,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:57,519 INFO L218 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] [2024-11-12 13:33:57,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 13:33:57,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:57,719 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:57,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:57,720 INFO L85 PathProgramCache]: Analyzing trace with hash -463652529, now seen corresponding path program 1 times [2024-11-12 13:33:57,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:57,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574761924] [2024-11-12 13:33:57,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:57,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:57,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:57,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 13:33:57,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574761924] [2024-11-12 13:33:57,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574761924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:57,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:57,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 13:33:57,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776086657] [2024-11-12 13:33:57,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:57,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 13:33:57,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:57,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 13:33:57,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:33:57,808 INFO L87 Difference]: Start difference. First operand 187 states and 240 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:57,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:57,918 INFO L93 Difference]: Finished difference Result 211 states and 271 transitions. [2024-11-12 13:33:57,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:33:57,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 1 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 38 [2024-11-12 13:33:57,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:57,921 INFO L225 Difference]: With dead ends: 211 [2024-11-12 13:33:57,921 INFO L226 Difference]: Without dead ends: 211 [2024-11-12 13:33:57,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:33:57,922 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 54 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:57,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 709 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 13:33:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-12 13:33:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 188. [2024-11-12 13:33:57,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 152 states have (on average 1.4539473684210527) internal successors, (221), 176 states have internal predecessors, (221), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-12 13:33:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 239 transitions. [2024-11-12 13:33:57,926 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 239 transitions. Word has length 38 [2024-11-12 13:33:57,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:57,927 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 239 transitions. [2024-11-12 13:33:57,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:33:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 239 transitions. [2024-11-12 13:33:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 13:33:57,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:57,927 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:57,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 13:33:57,928 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:57,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 338814236, now seen corresponding path program 1 times [2024-11-12 13:33:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045367823] [2024-11-12 13:33:57,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-12 13:33:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-12 13:33:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-12 13:33:58,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:58,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045367823] [2024-11-12 13:33:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045367823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 13:33:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867302816] [2024-11-12 13:33:58,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:58,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-12 13:33:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:58,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-12 13:33:58,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-12 13:33:58,163 INFO L87 Difference]: Start difference. First operand 188 states and 239 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 13:33:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:58,409 INFO L93 Difference]: Finished difference Result 203 states and 262 transitions. [2024-11-12 13:33:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 13:33:58,409 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-11-12 13:33:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:58,410 INFO L225 Difference]: With dead ends: 203 [2024-11-12 13:33:58,410 INFO L226 Difference]: Without dead ends: 203 [2024-11-12 13:33:58,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-12 13:33:58,411 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 15 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:58,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 480 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:33:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-12 13:33:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 196. [2024-11-12 13:33:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 160 states have (on average 1.4625) internal successors, (234), 184 states have internal predecessors, (234), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-12 13:33:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 252 transitions. [2024-11-12 13:33:58,414 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 252 transitions. Word has length 42 [2024-11-12 13:33:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:58,414 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 252 transitions. [2024-11-12 13:33:58,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 13:33:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 252 transitions. [2024-11-12 13:33:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 13:33:58,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:58,416 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:33:58,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-12 13:33:58,416 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:58,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash 338814237, now seen corresponding path program 1 times [2024-11-12 13:33:58,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:58,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798588753] [2024-11-12 13:33:58,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:58,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-12 13:33:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-12 13:33:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 13:33:58,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798588753] [2024-11-12 13:33:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798588753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:33:58,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:33:58,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-12 13:33:58,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564160869] [2024-11-12 13:33:58,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:33:58,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 13:33:58,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 13:33:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-12 13:33:58,774 INFO L87 Difference]: Start difference. First operand 196 states and 252 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 13:33:59,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:33:59,097 INFO L93 Difference]: Finished difference Result 198 states and 254 transitions. [2024-11-12 13:33:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 13:33:59,098 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-11-12 13:33:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:33:59,099 INFO L225 Difference]: With dead ends: 198 [2024-11-12 13:33:59,099 INFO L226 Difference]: Without dead ends: 198 [2024-11-12 13:33:59,099 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-12 13:33:59,099 INFO L435 NwaCegarLoop]: 91 mSDtfsCounter, 4 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:33:59,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 645 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:33:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-12 13:33:59,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2024-11-12 13:33:59,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 160 states have (on average 1.45) internal successors, (232), 184 states have internal predecessors, (232), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-12 13:33:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 250 transitions. [2024-11-12 13:33:59,102 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 250 transitions. Word has length 42 [2024-11-12 13:33:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:33:59,103 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 250 transitions. [2024-11-12 13:33:59,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-12 13:33:59,103 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 250 transitions. [2024-11-12 13:33:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-12 13:33:59,103 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:33:59,103 INFO L218 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] [2024-11-12 13:33:59,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 13:33:59,103 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:33:59,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:33:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash -146589297, now seen corresponding path program 1 times [2024-11-12 13:33:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:33:59,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316070601] [2024-11-12 13:33:59,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:33:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:59,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:33:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:59,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:33:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:59,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:33:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 13:33:59,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:33:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316070601] [2024-11-12 13:33:59,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316070601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:33:59,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975335140] [2024-11-12 13:33:59,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:33:59,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:33:59,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:33:59,394 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) [2024-11-12 13:33:59,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 13:33:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:33:59,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 13:33:59,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:33:59,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 13:33:59,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-12 13:33:59,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 13:33:59,638 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:33:59,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2024-11-12 13:33:59,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:33:59,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 52 [2024-11-12 13:33:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-12 13:33:59,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975335140] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:33:59,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:33:59,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 21 [2024-11-12 13:33:59,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917794751] [2024-11-12 13:33:59,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:33:59,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 13:33:59,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:33:59,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 13:33:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-12 13:33:59,799 INFO L87 Difference]: Start difference. First operand 196 states and 250 transitions. Second operand has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-12 13:34:00,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:34:00,200 INFO L93 Difference]: Finished difference Result 237 states and 299 transitions. [2024-11-12 13:34:00,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 13:34:00,200 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 41 [2024-11-12 13:34:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:34:00,201 INFO L225 Difference]: With dead ends: 237 [2024-11-12 13:34:00,201 INFO L226 Difference]: Without dead ends: 237 [2024-11-12 13:34:00,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-12 13:34:00,201 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 64 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 13:34:00,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1371 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 13:34:00,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-12 13:34:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 213. [2024-11-12 13:34:00,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 176 states have (on average 1.4261363636363635) internal successors, (251), 200 states have internal predecessors, (251), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:34:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 271 transitions. [2024-11-12 13:34:00,212 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 271 transitions. Word has length 41 [2024-11-12 13:34:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:34:00,212 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 271 transitions. [2024-11-12 13:34:00,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-12 13:34:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 271 transitions. [2024-11-12 13:34:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-12 13:34:00,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:34:00,212 INFO L218 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] [2024-11-12 13:34:00,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-12 13:34:00,413 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,SelfDestructingSolverStorable24 [2024-11-12 13:34:00,414 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:34:00,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:34:00,414 INFO L85 PathProgramCache]: Analyzing trace with hash -146589296, now seen corresponding path program 1 times [2024-11-12 13:34:00,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:34:00,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342430595] [2024-11-12 13:34:00,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:34:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:00,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:34:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:00,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:34:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:00,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:34:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:34:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:34:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342430595] [2024-11-12 13:34:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342430595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:34:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483258257] [2024-11-12 13:34:00,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:00,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:34:00,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:34:00,838 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) [2024-11-12 13:34:00,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 13:34:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:00,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-12 13:34:00,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:34:01,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 13:34:01,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-12 13:34:01,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-12 13:34:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:34:01,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:34:01,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 64 [2024-11-12 13:34:01,240 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 94 treesize of output 82 [2024-11-12 13:34:01,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:34:01,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-12 13:34:01,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:34:01,300 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 25 treesize of output 29 [2024-11-12 13:34:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:34:01,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483258257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:34:01,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:34:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 34 [2024-11-12 13:34:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079998664] [2024-11-12 13:34:01,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:34:01,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-12 13:34:01,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:34:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-12 13:34:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2024-11-12 13:34:01,410 INFO L87 Difference]: Start difference. First operand 213 states and 271 transitions. Second operand has 35 states, 32 states have (on average 2.5625) internal successors, (82), 30 states have internal predecessors, (82), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-12 13:34:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:34:01,830 INFO L93 Difference]: Finished difference Result 225 states and 281 transitions. [2024-11-12 13:34:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 13:34:01,830 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 2.5625) internal successors, (82), 30 states have internal predecessors, (82), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 41 [2024-11-12 13:34:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:34:01,831 INFO L225 Difference]: With dead ends: 225 [2024-11-12 13:34:01,831 INFO L226 Difference]: Without dead ends: 225 [2024-11-12 13:34:01,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=1275, Unknown=0, NotChecked=0, Total=1406 [2024-11-12 13:34:01,832 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 89 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:34:01,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1698 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:34:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-12 13:34:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 213. [2024-11-12 13:34:01,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 176 states have (on average 1.4204545454545454) internal successors, (250), 200 states have internal predecessors, (250), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:34:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 270 transitions. [2024-11-12 13:34:01,836 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 270 transitions. Word has length 41 [2024-11-12 13:34:01,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:34:01,836 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 270 transitions. [2024-11-12 13:34:01,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 2.5625) internal successors, (82), 30 states have internal predecessors, (82), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-12 13:34:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 270 transitions. [2024-11-12 13:34:01,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 13:34:01,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:34:01,837 INFO L218 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, 1, 1, 1, 1] [2024-11-12 13:34:01,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-12 13:34:02,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-12 13:34:02,037 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:34:02,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:34:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1159787401, now seen corresponding path program 1 times [2024-11-12 13:34:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:34:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768091374] [2024-11-12 13:34:02,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:02,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:34:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:02,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:34:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:02,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:34:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 13:34:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:34:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768091374] [2024-11-12 13:34:02,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768091374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:34:02,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:34:02,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-12 13:34:02,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001776535] [2024-11-12 13:34:02,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:34:02,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-12 13:34:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:34:02,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-12 13:34:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-12 13:34:02,297 INFO L87 Difference]: Start difference. First operand 213 states and 270 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:34:02,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:34:02,583 INFO L93 Difference]: Finished difference Result 233 states and 287 transitions. [2024-11-12 13:34:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-12 13:34:02,583 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (2), 1 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 42 [2024-11-12 13:34:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:34:02,584 INFO L225 Difference]: With dead ends: 233 [2024-11-12 13:34:02,584 INFO L226 Difference]: Without dead ends: 233 [2024-11-12 13:34:02,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-12 13:34:02,586 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 54 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 13:34:02,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 878 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 13:34:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-12 13:34:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 220. [2024-11-12 13:34:02,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 184 states have (on average 1.4021739130434783) internal successors, (258), 207 states have internal predecessors, (258), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:34:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 278 transitions. [2024-11-12 13:34:02,594 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 278 transitions. Word has length 42 [2024-11-12 13:34:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:34:02,594 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 278 transitions. [2024-11-12 13:34:02,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:34:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 278 transitions. [2024-11-12 13:34:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-12 13:34:02,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:34:02,594 INFO L218 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, 1, 1, 1, 1] [2024-11-12 13:34:02,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-12 13:34:02,595 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:34:02,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:34:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1159787400, now seen corresponding path program 1 times [2024-11-12 13:34:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:34:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809526665] [2024-11-12 13:34:02,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:34:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:02,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:34:02,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:02,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:34:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:34:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:34:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809526665] [2024-11-12 13:34:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809526665] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:34:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289062217] [2024-11-12 13:34:02,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:02,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:34:02,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:34:02,997 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) [2024-11-12 13:34:02,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 13:34:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:03,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-12 13:34:03,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:34:03,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 13:34:03,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-12 13:34:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:34:03,368 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:34:03,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 13:34:03,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 41 [2024-11-12 13:34:03,574 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-12 13:34:03,574 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 11 [2024-11-12 13:34:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:34:03,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289062217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 13:34:03,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 13:34:03,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 8] total 36 [2024-11-12 13:34:03,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639947402] [2024-11-12 13:34:03,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 13:34:03,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-12 13:34:03,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:34:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-12 13:34:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1234, Unknown=0, NotChecked=0, Total=1332 [2024-11-12 13:34:03,620 INFO L87 Difference]: Start difference. First operand 220 states and 278 transitions. Second operand has 37 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-12 13:34:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:34:04,686 INFO L93 Difference]: Finished difference Result 321 states and 398 transitions. [2024-11-12 13:34:04,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-12 13:34:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2024-11-12 13:34:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:34:04,688 INFO L225 Difference]: With dead ends: 321 [2024-11-12 13:34:04,688 INFO L226 Difference]: Without dead ends: 321 [2024-11-12 13:34:04,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=2946, Unknown=0, NotChecked=0, Total=3192 [2024-11-12 13:34:04,689 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 209 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 13:34:04,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1550 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 13:34:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-12 13:34:04,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 255. [2024-11-12 13:34:04,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 219 states have (on average 1.447488584474886) internal successors, (317), 242 states have internal predecessors, (317), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:34:04,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 337 transitions. [2024-11-12 13:34:04,693 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 337 transitions. Word has length 42 [2024-11-12 13:34:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:34:04,693 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 337 transitions. [2024-11-12 13:34:04,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 3.0) internal successors, (102), 33 states have internal predecessors, (102), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-12 13:34:04,694 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 337 transitions. [2024-11-12 13:34:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-12 13:34:04,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:34:04,694 INFO L218 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, 1, 1, 1, 1, 1] [2024-11-12 13:34:04,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-12 13:34:04,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-12 13:34:04,898 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:34:04,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:34:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1593672407, now seen corresponding path program 1 times [2024-11-12 13:34:04,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:34:04,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098816504] [2024-11-12 13:34:04,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:04,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:34:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:04,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:34:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:04,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:34:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 13:34:04,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:34:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098816504] [2024-11-12 13:34:04,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098816504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:34:04,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:34:04,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 13:34:04,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834283533] [2024-11-12 13:34:04,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:34:04,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 13:34:04,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:34:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 13:34:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:34:04,999 INFO L87 Difference]: Start difference. First operand 255 states and 337 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:34:05,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:34:05,157 INFO L93 Difference]: Finished difference Result 275 states and 363 transitions. [2024-11-12 13:34:05,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 13:34:05,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (2), 1 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 43 [2024-11-12 13:34:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:34:05,159 INFO L225 Difference]: With dead ends: 275 [2024-11-12 13:34:05,159 INFO L226 Difference]: Without dead ends: 275 [2024-11-12 13:34:05,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 13:34:05,163 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 13:34:05,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 605 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 13:34:05,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-12 13:34:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2024-11-12 13:34:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 234 states have (on average 1.4658119658119657) internal successors, (343), 257 states have internal predecessors, (343), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-12 13:34:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 363 transitions. [2024-11-12 13:34:05,168 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 363 transitions. Word has length 43 [2024-11-12 13:34:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:34:05,168 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 363 transitions. [2024-11-12 13:34:05,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 13:34:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 363 transitions. [2024-11-12 13:34:05,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-12 13:34:05,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:34:05,169 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 13:34:05,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-12 13:34:05,169 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2024-11-12 13:34:05,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:34:05,170 INFO L85 PathProgramCache]: Analyzing trace with hash 940084334, now seen corresponding path program 1 times [2024-11-12 13:34:05,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:34:05,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182188344] [2024-11-12 13:34:05,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:05,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:34:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:05,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 13:34:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:05,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 13:34:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:05,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-12 13:34:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 13:34:05,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:34:05,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182188344] [2024-11-12 13:34:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182188344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 13:34:05,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700150075] [2024-11-12 13:34:05,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:34:05,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 13:34:05,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:34:05,753 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 13:34:05,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-12 13:34:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:34:05,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-12 13:34:05,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 13:34:05,885 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 [2024-11-12 13:34:06,017 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-12 13:34:06,017 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 [2024-11-12 13:34:06,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 13:34:06,127 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 [2024-11-12 13:34:06,181 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 41 treesize of output 25 [2024-11-12 13:34:06,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-12 13:34:06,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-12 13:34:06,367 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-12 13:34:06,367 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 16 [2024-11-12 13:34:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:34:06,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 13:34:06,505 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 94 treesize of output 88 [2024-11-12 13:34:44,412 INFO L349 Elim1Store]: treesize reduction 66, result has 69.6 percent of original size [2024-11-12 13:34:44,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 2906 treesize of output 2804