./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-nested-sll.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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.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 89b7500933072598b3ae86cb9a0697a1fc30e47e1dd961db3afeb42e68cfc79e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 00:39:22,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 00:39:22,669 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-17 00:39:22,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 00:39:22,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 00:39:22,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 00:39:22,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 00:39:22,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 00:39:22,709 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 00:39:22,710 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 00:39:22,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 00:39:22,710 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 00:39:22,711 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 00:39:22,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 00:39:22,712 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 00:39:22,712 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 00:39:22,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 00:39:22,713 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 00:39:22,714 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 00:39:22,714 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 00:39:22,714 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 00:39:22,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 00:39:22,715 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 00:39:22,716 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 00:39:22,716 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 00:39:22,716 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 00:39:22,717 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 00:39:22,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 00:39:22,718 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 00:39:22,718 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 00:39:22,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:39:22,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 00:39:22,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 00:39:22,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 00:39:22,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 00:39:22,720 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 00:39:22,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 00:39:22,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 00:39:22,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 00:39:22,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89b7500933072598b3ae86cb9a0697a1fc30e47e1dd961db3afeb42e68cfc79e [2024-11-17 00:39:22,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 00:39:23,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 00:39:23,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 00:39:23,010 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 00:39:23,011 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 00:39:23,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-nested-sll.i [2024-11-17 00:39:24,607 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 00:39:24,918 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 00:39:24,919 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-nested-sll.i [2024-11-17 00:39:24,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191c82463/67d5b8c0d09f44f98dfc32b0812d11a1/FLAG42c246ba3 [2024-11-17 00:39:24,968 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191c82463/67d5b8c0d09f44f98dfc32b0812d11a1 [2024-11-17 00:39:24,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 00:39:24,975 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 00:39:24,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 00:39:24,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 00:39:24,983 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 00:39:24,984 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:39:24" (1/1) ... [2024-11-17 00:39:24,985 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c7037e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:24, skipping insertion in model container [2024-11-17 00:39:24,985 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:39:24" (1/1) ... [2024-11-17 00:39:25,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 00:39:25,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:39:25,454 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 00:39:25,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 00:39:25,534 INFO L204 MainTranslator]: Completed translation [2024-11-17 00:39:25,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25 WrapperNode [2024-11-17 00:39:25,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 00:39:25,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 00:39:25,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 00:39:25,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 00:39:25,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,589 INFO L138 Inliner]: procedures = 122, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 84 [2024-11-17 00:39:25,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 00:39:25,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 00:39:25,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 00:39:25,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 00:39:25,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,645 INFO L175 MemorySlicer]: Split 16 memory accesses to 1 slices as follows [16]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 7 writes are split as follows [7]. [2024-11-17 00:39:25,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,654 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,659 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 00:39:25,666 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 00:39:25,670 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 00:39:25,670 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 00:39:25,671 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (1/1) ... [2024-11-17 00:39:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 00:39:25,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:25,717 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) [2024-11-17 00:39:25,724 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 [2024-11-17 00:39:25,773 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero_internal [2024-11-17 00:39:25,774 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero_internal [2024-11-17 00:39:25,774 INFO L130 BoogieDeclarations]: Found specification of procedure create_internal [2024-11-17 00:39:25,774 INFO L138 BoogieDeclarations]: Found implementation of procedure create_internal [2024-11-17 00:39:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-17 00:39:25,775 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-17 00:39:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 00:39:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 00:39:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 00:39:25,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 00:39:25,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 00:39:25,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 00:39:25,899 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 00:39:25,901 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 00:39:26,253 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2024-11-17 00:39:26,257 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 00:39:26,273 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 00:39:26,274 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 00:39:26,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:39:26 BoogieIcfgContainer [2024-11-17 00:39:26,274 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 00:39:26,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 00:39:26,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 00:39:26,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 00:39:26,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:39:24" (1/3) ... [2024-11-17 00:39:26,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f706506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:39:26, skipping insertion in model container [2024-11-17 00:39:26,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:39:25" (2/3) ... [2024-11-17 00:39:26,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f706506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:39:26, skipping insertion in model container [2024-11-17 00:39:26,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 12:39:26" (3/3) ... [2024-11-17 00:39:26,283 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-nested-sll.i [2024-11-17 00:39:26,297 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 00:39:26,297 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2024-11-17 00:39:26,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 00:39:26,345 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;@75eb8c85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 00:39:26,345 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-17 00:39:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 70 states have (on average 1.7285714285714286) internal successors, (121), 109 states have internal predecessors, (121), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:26,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:39:26,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:26,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:39:26,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:26,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash 127873765, now seen corresponding path program 1 times [2024-11-17 00:39:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:26,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490102056] [2024-11-17 00:39:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:26,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:26,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:26,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490102056] [2024-11-17 00:39:26,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490102056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:26,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:26,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:39:26,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742547624] [2024-11-17 00:39:26,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:26,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:39:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:39:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:26,604 INFO L87 Difference]: Start difference. First operand has 119 states, 70 states have (on average 1.7285714285714286) internal successors, (121), 109 states have internal predecessors, (121), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 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) [2024-11-17 00:39:26,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:26,739 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2024-11-17 00:39:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:39:26,743 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 [2024-11-17 00:39:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:26,753 INFO L225 Difference]: With dead ends: 117 [2024-11-17 00:39:26,753 INFO L226 Difference]: Without dead ends: 114 [2024-11-17 00:39:26,754 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:26,758 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 2 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:26,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 199 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:26,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-17 00:39:26,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-17 00:39:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 104 states have internal predecessors, (110), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2024-11-17 00:39:26,816 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 5 [2024-11-17 00:39:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:26,816 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2024-11-17 00:39:26,817 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) [2024-11-17 00:39:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2024-11-17 00:39:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-17 00:39:26,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:26,818 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 00:39:26,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 00:39:26,819 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:26,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash 127873766, now seen corresponding path program 1 times [2024-11-17 00:39:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:26,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678587360] [2024-11-17 00:39:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:26,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678587360] [2024-11-17 00:39:26,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678587360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:26,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:26,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 00:39:26,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628672008] [2024-11-17 00:39:26,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:26,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 00:39:26,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:26,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 00:39:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:26,996 INFO L87 Difference]: Start difference. First operand 114 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) [2024-11-17 00:39:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:27,085 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2024-11-17 00:39:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 00:39:27,086 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 [2024-11-17 00:39:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:27,088 INFO L225 Difference]: With dead ends: 112 [2024-11-17 00:39:27,088 INFO L226 Difference]: Without dead ends: 112 [2024-11-17 00:39:27,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 00:39:27,091 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 2 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:27,091 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 204 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-17 00:39:27,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-17 00:39:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 68 states have (on average 1.588235294117647) internal successors, (108), 102 states have internal predecessors, (108), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2024-11-17 00:39:27,112 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 5 [2024-11-17 00:39:27,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:27,112 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2024-11-17 00:39:27,112 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) [2024-11-17 00:39:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2024-11-17 00:39:27,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:39:27,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:27,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:27,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 00:39:27,114 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 36 more)] === [2024-11-17 00:39:27,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:27,114 INFO L85 PathProgramCache]: Analyzing trace with hash 773389798, now seen corresponding path program 1 times [2024-11-17 00:39:27,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:27,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363300536] [2024-11-17 00:39:27,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:27,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:27,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:27,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363300536] [2024-11-17 00:39:27,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363300536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:27,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:27,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:39:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565927839] [2024-11-17 00:39:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:27,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:39:27,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:27,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:39:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:27,265 INFO L87 Difference]: Start difference. First operand 112 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:27,405 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2024-11-17 00:39:27,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:39:27,406 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-17 00:39:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:27,407 INFO L225 Difference]: With dead ends: 111 [2024-11-17 00:39:27,409 INFO L226 Difference]: Without dead ends: 111 [2024-11-17 00:39:27,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:27,410 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 1 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:27,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 247 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:27,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-17 00:39:27,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-17 00:39:27,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.5735294117647058) internal successors, (107), 101 states have internal predecessors, (107), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2024-11-17 00:39:27,424 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 14 [2024-11-17 00:39:27,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:27,427 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2024-11-17 00:39:27,428 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2024-11-17 00:39:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-17 00:39:27,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:27,428 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:27,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 00:39:27,429 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 36 more)] === [2024-11-17 00:39:27,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash 773389799, now seen corresponding path program 1 times [2024-11-17 00:39:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:27,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249593322] [2024-11-17 00:39:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:27,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:27,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:27,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249593322] [2024-11-17 00:39:27,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249593322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:27,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:27,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 00:39:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301718001] [2024-11-17 00:39:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:27,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 00:39:27,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:27,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 00:39:27,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:27,577 INFO L87 Difference]: Start difference. First operand 111 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:27,707 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2024-11-17 00:39:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 00:39:27,707 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-17 00:39:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:27,708 INFO L225 Difference]: With dead ends: 110 [2024-11-17 00:39:27,709 INFO L226 Difference]: Without dead ends: 110 [2024-11-17 00:39:27,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 00:39:27,710 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 1 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:27,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 256 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-17 00:39:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-17 00:39:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 100 states have internal predecessors, (106), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 00:39:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2024-11-17 00:39:27,727 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 14 [2024-11-17 00:39:27,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:27,727 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2024-11-17 00:39:27,728 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 00:39:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2024-11-17 00:39:27,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-17 00:39:27,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:27,731 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:27,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 00:39:27,731 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:27,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:27,731 INFO L85 PathProgramCache]: Analyzing trace with hash -932951290, now seen corresponding path program 1 times [2024-11-17 00:39:27,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:27,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643962164] [2024-11-17 00:39:27,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:27,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:27,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:28,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643962164] [2024-11-17 00:39:28,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643962164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:28,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:28,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:39:28,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589835567] [2024-11-17 00:39:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:28,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:39:28,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:28,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:39:28,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:39:28,292 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:28,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:28,592 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2024-11-17 00:39:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:28,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2024-11-17 00:39:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:28,596 INFO L225 Difference]: With dead ends: 127 [2024-11-17 00:39:28,596 INFO L226 Difference]: Without dead ends: 127 [2024-11-17 00:39:28,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:39:28,597 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 28 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:28,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 400 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-17 00:39:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2024-11-17 00:39:28,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 79 states have (on average 1.5569620253164558) internal successors, (123), 109 states have internal predecessors, (123), 7 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-17 00:39:28,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2024-11-17 00:39:28,616 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 24 [2024-11-17 00:39:28,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:28,616 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2024-11-17 00:39:28,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:28,617 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2024-11-17 00:39:28,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-17 00:39:28,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:28,617 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:28,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 00:39:28,618 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:28,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash -932951289, now seen corresponding path program 1 times [2024-11-17 00:39:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706963629] [2024-11-17 00:39:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:28,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:29,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706963629] [2024-11-17 00:39:29,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706963629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:29,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:29,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 00:39:29,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66159407] [2024-11-17 00:39:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:29,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:39:29,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:29,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:39:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:39:29,194 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:29,628 INFO L93 Difference]: Finished difference Result 138 states and 159 transitions. [2024-11-17 00:39:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:29,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2024-11-17 00:39:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:29,631 INFO L225 Difference]: With dead ends: 138 [2024-11-17 00:39:29,631 INFO L226 Difference]: Without dead ends: 138 [2024-11-17 00:39:29,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:39:29,633 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 16 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:29,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 574 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:39:29,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-17 00:39:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2024-11-17 00:39:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 88 states have (on average 1.5227272727272727) internal successors, (134), 118 states have internal predecessors, (134), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (12), 11 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-17 00:39:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 155 transitions. [2024-11-17 00:39:29,649 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 155 transitions. Word has length 24 [2024-11-17 00:39:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:29,649 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 155 transitions. [2024-11-17 00:39:29,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 155 transitions. [2024-11-17 00:39:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-17 00:39:29,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:29,650 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:29,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 00:39:29,651 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting create_internalErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:29,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1097147517, now seen corresponding path program 1 times [2024-11-17 00:39:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597948460] [2024-11-17 00:39:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:29,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-17 00:39:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:29,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:29,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597948460] [2024-11-17 00:39:29,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597948460] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:29,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626718196] [2024-11-17 00:39:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:29,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:29,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:29,900 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) [2024-11-17 00:39:29,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 00:39:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:29,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-17 00:39:29,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:30,042 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 [2024-11-17 00:39:30,088 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_internal_~pi~1.base Int)) (and (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_internal_~pi~1.base (select |c_#valid| alloc_and_zero_internal_~pi~1.base))) (= (select |c_old(#valid)| alloc_and_zero_internal_~pi~1.base) 0))) is different from true [2024-11-17 00:39:30,134 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-17 00:39:30,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-17 00:39:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-17 00:39:30,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626718196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:30,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:30,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2024-11-17 00:39:30,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58145673] [2024-11-17 00:39:30,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:30,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 00:39:30,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:30,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 00:39:30,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-11-17 00:39:30,196 INFO L87 Difference]: Start difference. First operand 133 states and 155 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:39:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:30,551 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2024-11-17 00:39:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:30,552 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2024-11-17 00:39:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:30,553 INFO L225 Difference]: With dead ends: 134 [2024-11-17 00:39:30,553 INFO L226 Difference]: Without dead ends: 134 [2024-11-17 00:39:30,553 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=169, Unknown=1, NotChecked=26, Total=240 [2024-11-17 00:39:30,555 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 15 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:30,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 547 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 348 Invalid, 0 Unknown, 123 Unchecked, 0.3s Time] [2024-11-17 00:39:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-17 00:39:30,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-17 00:39:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 89 states have (on average 1.5168539325842696) internal successors, (135), 118 states have internal predecessors, (135), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-17 00:39:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2024-11-17 00:39:30,569 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 27 [2024-11-17 00:39:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:30,570 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2024-11-17 00:39:30,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-17 00:39:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2024-11-17 00:39:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-17 00:39:30,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:30,570 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:30,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 00:39:30,771 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 [2024-11-17 00:39:30,771 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting create_internalErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:30,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1097147518, now seen corresponding path program 1 times [2024-11-17 00:39:30,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:30,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885170717] [2024-11-17 00:39:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:30,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:31,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-17 00:39:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:31,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:31,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885170717] [2024-11-17 00:39:31,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885170717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:31,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572485974] [2024-11-17 00:39:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:31,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:31,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:31,186 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) [2024-11-17 00:39:31,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 00:39:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:31,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 00:39:31,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:31,286 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 [2024-11-17 00:39:31,404 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 [2024-11-17 00:39:31,429 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-17 00:39:31,430 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 [2024-11-17 00:39:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-17 00:39:31,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:31,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572485974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:39:31,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:39:31,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 21 [2024-11-17 00:39:31,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701979724] [2024-11-17 00:39:31,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:31,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 00:39:31,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:31,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 00:39:31,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=362, Unknown=1, NotChecked=38, Total=462 [2024-11-17 00:39:31,789 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-17 00:39:32,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:32,755 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2024-11-17 00:39:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:39:32,756 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) Word has length 27 [2024-11-17 00:39:32,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:32,757 INFO L225 Difference]: With dead ends: 135 [2024-11-17 00:39:32,757 INFO L226 Difference]: Without dead ends: 135 [2024-11-17 00:39:32,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=690, Unknown=1, NotChecked=54, Total=870 [2024-11-17 00:39:32,759 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 44 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:32,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1026 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 552 Invalid, 0 Unknown, 123 Unchecked, 0.6s Time] [2024-11-17 00:39:32,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-17 00:39:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2024-11-17 00:39:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 117 states have internal predecessors, (133), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-17 00:39:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2024-11-17 00:39:32,770 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 27 [2024-11-17 00:39:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:32,770 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2024-11-17 00:39:32,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.142857142857143) internal successors, (45), 16 states have internal predecessors, (45), 4 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-17 00:39:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2024-11-17 00:39:32,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:39:32,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:32,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:32,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-17 00:39:32,975 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 [2024-11-17 00:39:32,976 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:32,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash 409762316, now seen corresponding path program 1 times [2024-11-17 00:39:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:32,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028350574] [2024-11-17 00:39:32,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:32,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:33,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:33,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028350574] [2024-11-17 00:39:33,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028350574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:33,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:33,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 00:39:33,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625723408] [2024-11-17 00:39:33,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:33,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 00:39:33,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 00:39:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-17 00:39:33,106 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:33,307 INFO L93 Difference]: Finished difference Result 154 states and 188 transitions. [2024-11-17 00:39:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-17 00:39:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-17 00:39:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:33,310 INFO L225 Difference]: With dead ends: 154 [2024-11-17 00:39:33,310 INFO L226 Difference]: Without dead ends: 154 [2024-11-17 00:39:33,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:39:33,310 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 28 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:33,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 410 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-17 00:39:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2024-11-17 00:39:33,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 105 states have (on average 1.5142857142857142) internal successors, (159), 131 states have internal predecessors, (159), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 185 transitions. [2024-11-17 00:39:33,320 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 185 transitions. Word has length 32 [2024-11-17 00:39:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:33,320 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 185 transitions. [2024-11-17 00:39:33,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 185 transitions. [2024-11-17 00:39:33,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-17 00:39:33,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:33,323 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:33,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 00:39:33,323 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:33,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 409762317, now seen corresponding path program 1 times [2024-11-17 00:39:33,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:33,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519121677] [2024-11-17 00:39:33,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:33,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:33,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:33,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519121677] [2024-11-17 00:39:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519121677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:33,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:33,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:39:33,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179515096] [2024-11-17 00:39:33,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:33,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:39:33,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:33,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:39:33,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:39:33,582 INFO L87 Difference]: Start difference. First operand 149 states and 185 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:33,803 INFO L93 Difference]: Finished difference Result 165 states and 201 transitions. [2024-11-17 00:39:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:39:33,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2024-11-17 00:39:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:33,804 INFO L225 Difference]: With dead ends: 165 [2024-11-17 00:39:33,805 INFO L226 Difference]: Without dead ends: 165 [2024-11-17 00:39:33,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-17 00:39:33,805 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 23 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:33,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 707 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:39:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-17 00:39:33,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2024-11-17 00:39:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 117 states have (on average 1.4957264957264957) internal successors, (175), 143 states have internal predecessors, (175), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2024-11-17 00:39:33,815 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 32 [2024-11-17 00:39:33,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:33,815 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2024-11-17 00:39:33,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2024-11-17 00:39:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-17 00:39:33,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:33,817 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:33,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 00:39:33,817 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:33,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash 930748176, now seen corresponding path program 1 times [2024-11-17 00:39:33,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:33,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776296704] [2024-11-17 00:39:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:33,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:33,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:33,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:33,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:33,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776296704] [2024-11-17 00:39:33,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776296704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:33,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:33,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-17 00:39:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922374573] [2024-11-17 00:39:33,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:33,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 00:39:33,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:33,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 00:39:33,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:39:33,951 INFO L87 Difference]: Start difference. First operand 161 states and 201 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:34,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:34,076 INFO L93 Difference]: Finished difference Result 173 states and 215 transitions. [2024-11-17 00:39:34,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:39:34,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2024-11-17 00:39:34,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:34,080 INFO L225 Difference]: With dead ends: 173 [2024-11-17 00:39:34,080 INFO L226 Difference]: Without dead ends: 173 [2024-11-17 00:39:34,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:39:34,081 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 28 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:34,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 739 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-17 00:39:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-17 00:39:34,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 163. [2024-11-17 00:39:34,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 119 states have (on average 1.4705882352941178) internal successors, (175), 145 states have internal predecessors, (175), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 201 transitions. [2024-11-17 00:39:34,089 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 201 transitions. Word has length 35 [2024-11-17 00:39:34,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:34,089 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 201 transitions. [2024-11-17 00:39:34,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:34,089 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 201 transitions. [2024-11-17 00:39:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-17 00:39:34,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:34,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:34,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 00:39:34,094 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:34,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:34,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1634205858, now seen corresponding path program 1 times [2024-11-17 00:39:34,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:34,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323970073] [2024-11-17 00:39:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:34,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:34,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:39:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323970073] [2024-11-17 00:39:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323970073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259659198] [2024-11-17 00:39:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:34,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:34,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:34,699 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) [2024-11-17 00:39:34,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 00:39:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:34,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 00:39:34,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:34,832 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 [2024-11-17 00:39:34,946 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 [2024-11-17 00:39:35,100 INFO L349 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2024-11-17 00:39:35,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 54 [2024-11-17 00:39:35,115 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:39:35,116 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:39:35,117 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:39:35,125 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2024-11-17 00:39:35,126 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 4 case distinctions, treesize of input 25 treesize of output 7 [2024-11-17 00:39:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-17 00:39:35,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:35,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259659198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:35,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:35,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2024-11-17 00:39:35,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668016322] [2024-11-17 00:39:35,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:35,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-17 00:39:35,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-17 00:39:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=401, Unknown=1, NotChecked=42, Total=552 [2024-11-17 00:39:35,426 INFO L87 Difference]: Start difference. First operand 163 states and 201 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-17 00:39:36,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:36,408 INFO L93 Difference]: Finished difference Result 183 states and 231 transitions. [2024-11-17 00:39:36,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 00:39:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 36 [2024-11-17 00:39:36,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:36,410 INFO L225 Difference]: With dead ends: 183 [2024-11-17 00:39:36,410 INFO L226 Difference]: Without dead ends: 183 [2024-11-17 00:39:36,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=719, Unknown=1, NotChecked=58, Total=992 [2024-11-17 00:39:36,411 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 59 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:36,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 723 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 619 Invalid, 0 Unknown, 150 Unchecked, 0.6s Time] [2024-11-17 00:39:36,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-17 00:39:36,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 172. [2024-11-17 00:39:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 127 states have (on average 1.4566929133858268) internal successors, (185), 153 states have internal predecessors, (185), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 215 transitions. [2024-11-17 00:39:36,419 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 215 transitions. Word has length 36 [2024-11-17 00:39:36,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:36,419 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 215 transitions. [2024-11-17 00:39:36,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 6 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-17 00:39:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 215 transitions. [2024-11-17 00:39:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-17 00:39:36,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:36,422 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:36,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 00:39:36,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:36,623 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:36,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1634205859, now seen corresponding path program 1 times [2024-11-17 00:39:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:36,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954054616] [2024-11-17 00:39:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:36,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:36,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:39:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954054616] [2024-11-17 00:39:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954054616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435632152] [2024-11-17 00:39:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:37,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:37,606 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) [2024-11-17 00:39:37,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 00:39:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:37,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-17 00:39:37,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:37,715 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 [2024-11-17 00:39:37,723 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 [2024-11-17 00:39:37,954 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 [2024-11-17 00:39:38,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:38,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:38,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2024-11-17 00:39:38,126 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-17 00:39:38,126 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 [2024-11-17 00:39:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-17 00:39:38,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:38,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435632152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:38,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:38,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24 [2024-11-17 00:39:38,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031281977] [2024-11-17 00:39:38,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:38,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-17 00:39:38,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-17 00:39:38,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=548, Unknown=1, NotChecked=48, Total=702 [2024-11-17 00:39:38,370 INFO L87 Difference]: Start difference. First operand 172 states and 215 transitions. Second operand has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 19 states have internal predecessors, (51), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:39:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:38,960 INFO L93 Difference]: Finished difference Result 193 states and 241 transitions. [2024-11-17 00:39:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:39:38,961 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 19 states have internal predecessors, (51), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 36 [2024-11-17 00:39:38,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:38,962 INFO L225 Difference]: With dead ends: 193 [2024-11-17 00:39:38,962 INFO L226 Difference]: Without dead ends: 193 [2024-11-17 00:39:38,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=636, Unknown=1, NotChecked=52, Total=812 [2024-11-17 00:39:38,963 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 30 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:38,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 820 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 751 Invalid, 0 Unknown, 159 Unchecked, 0.5s Time] [2024-11-17 00:39:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-17 00:39:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 168. [2024-11-17 00:39:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.4596774193548387) internal successors, (181), 150 states have internal predecessors, (181), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 14 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-17 00:39:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 207 transitions. [2024-11-17 00:39:38,973 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 207 transitions. Word has length 36 [2024-11-17 00:39:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:38,974 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 207 transitions. [2024-11-17 00:39:38,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 19 states have internal predecessors, (51), 7 states have call successors, (8), 3 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-17 00:39:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 207 transitions. [2024-11-17 00:39:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-17 00:39:38,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:38,976 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:38,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 00:39:39,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:39,177 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:39,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1168603994, now seen corresponding path program 1 times [2024-11-17 00:39:39,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:39,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657918484] [2024-11-17 00:39:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:39,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:39,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:39,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:39,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:39,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657918484] [2024-11-17 00:39:39,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657918484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:39,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:39,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-17 00:39:39,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019430064] [2024-11-17 00:39:39,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:39,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:39:39,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:39,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:39:39,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:39:39,662 INFO L87 Difference]: Start difference. First operand 168 states and 207 transitions. Second operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:40,184 INFO L93 Difference]: Finished difference Result 195 states and 240 transitions. [2024-11-17 00:39:40,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:39:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2024-11-17 00:39:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:40,186 INFO L225 Difference]: With dead ends: 195 [2024-11-17 00:39:40,187 INFO L226 Difference]: Without dead ends: 195 [2024-11-17 00:39:40,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:39:40,187 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 34 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:40,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1035 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:39:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-17 00:39:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2024-11-17 00:39:40,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 139 states have (on average 1.4316546762589928) internal successors, (199), 165 states have internal predecessors, (199), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 229 transitions. [2024-11-17 00:39:40,196 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 229 transitions. Word has length 36 [2024-11-17 00:39:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:40,197 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 229 transitions. [2024-11-17 00:39:40,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 229 transitions. [2024-11-17 00:39:40,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-17 00:39:40,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:40,198 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:40,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-17 00:39:40,199 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:40,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1168603993, now seen corresponding path program 1 times [2024-11-17 00:39:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:40,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964316798] [2024-11-17 00:39:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:40,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:40,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:40,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:40,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:40,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964316798] [2024-11-17 00:39:40,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964316798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:39:40,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:39:40,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-17 00:39:40,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842472217] [2024-11-17 00:39:40,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:39:40,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 00:39:40,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:40,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 00:39:40,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-17 00:39:40,875 INFO L87 Difference]: Start difference. First operand 184 states and 229 transitions. Second operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:41,335 INFO L93 Difference]: Finished difference Result 195 states and 239 transitions. [2024-11-17 00:39:41,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:39:41,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2024-11-17 00:39:41,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:41,337 INFO L225 Difference]: With dead ends: 195 [2024-11-17 00:39:41,337 INFO L226 Difference]: Without dead ends: 195 [2024-11-17 00:39:41,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2024-11-17 00:39:41,338 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 33 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:41,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1092 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-17 00:39:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-17 00:39:41,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2024-11-17 00:39:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 165 states have internal predecessors, (198), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 228 transitions. [2024-11-17 00:39:41,344 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 228 transitions. Word has length 36 [2024-11-17 00:39:41,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:41,345 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 228 transitions. [2024-11-17 00:39:41,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:39:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 228 transitions. [2024-11-17 00:39:41,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 00:39:41,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:41,346 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:41,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-17 00:39:41,346 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting create_internalErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:41,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1206896287, now seen corresponding path program 1 times [2024-11-17 00:39:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575223355] [2024-11-17 00:39:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:41,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-17 00:39:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-17 00:39:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:39:41,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575223355] [2024-11-17 00:39:41,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575223355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:41,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501472345] [2024-11-17 00:39:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:41,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:41,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:41,604 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) [2024-11-17 00:39:41,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 00:39:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:41,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 00:39:41,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:41,727 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 [2024-11-17 00:39:41,740 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 [2024-11-17 00:39:41,746 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 [2024-11-17 00:39:41,768 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 [2024-11-17 00:39:41,788 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-17 00:39:41,788 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 [2024-11-17 00:39:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-17 00:39:41,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:39:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501472345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:39:41,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:39:41,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 13 [2024-11-17 00:39:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690282597] [2024-11-17 00:39:41,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:41,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-17 00:39:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-17 00:39:41,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-11-17 00:39:41,916 INFO L87 Difference]: Start difference. First operand 184 states and 228 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, (10), 4 states have call predecessors, (10), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 00:39:42,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:42,334 INFO L93 Difference]: Finished difference Result 183 states and 227 transitions. [2024-11-17 00:39:42,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 00:39:42,335 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, (10), 4 states have call predecessors, (10), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-11-17 00:39:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:42,336 INFO L225 Difference]: With dead ends: 183 [2024-11-17 00:39:42,336 INFO L226 Difference]: Without dead ends: 183 [2024-11-17 00:39:42,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=314, Unknown=1, NotChecked=36, Total=420 [2024-11-17 00:39:42,337 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 25 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:42,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 719 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 461 Invalid, 0 Unknown, 119 Unchecked, 0.3s Time] [2024-11-17 00:39:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-17 00:39:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-17 00:39:42,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 139 states have (on average 1.4172661870503598) internal successors, (197), 164 states have internal predecessors, (197), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 227 transitions. [2024-11-17 00:39:42,342 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 227 transitions. Word has length 39 [2024-11-17 00:39:42,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:42,343 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 227 transitions. [2024-11-17 00:39:42,343 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, (10), 4 states have call predecessors, (10), 5 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-17 00:39:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 227 transitions. [2024-11-17 00:39:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-17 00:39:42,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:42,344 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:42,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 00:39:42,547 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 [2024-11-17 00:39:42,548 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting create_internalErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:42,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1206896286, now seen corresponding path program 1 times [2024-11-17 00:39:42,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:42,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376494085] [2024-11-17 00:39:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:42,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:42,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:42,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-17 00:39:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:42,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-17 00:39:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:42,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-17 00:39:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:39:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:42,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376494085] [2024-11-17 00:39:42,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376494085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:42,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016552075] [2024-11-17 00:39:42,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:42,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:42,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:42,975 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) [2024-11-17 00:39:42,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 00:39:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:43,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-17 00:39:43,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:43,109 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 [2024-11-17 00:39:43,113 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 [2024-11-17 00:39:43,194 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 [2024-11-17 00:39:43,199 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 [2024-11-17 00:39:43,230 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 26 treesize of output 14 [2024-11-17 00:39:43,319 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 [2024-11-17 00:39:43,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:43,340 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 [2024-11-17 00:39:43,346 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:43,346 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 [2024-11-17 00:39:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-11-17 00:39:43,368 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:43,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016552075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:43,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:39:43,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2024-11-17 00:39:43,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255450483] [2024-11-17 00:39:43,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:39:43,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 00:39:43,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:39:43,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 00:39:43,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=443, Unknown=1, NotChecked=42, Total=552 [2024-11-17 00:39:43,475 INFO L87 Difference]: Start difference. First operand 183 states and 227 transitions. Second operand has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:39:43,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:39:43,964 INFO L93 Difference]: Finished difference Result 182 states and 226 transitions. [2024-11-17 00:39:43,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 00:39:43,965 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2024-11-17 00:39:43,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:39:43,966 INFO L225 Difference]: With dead ends: 182 [2024-11-17 00:39:43,966 INFO L226 Difference]: Without dead ends: 182 [2024-11-17 00:39:43,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=610, Unknown=1, NotChecked=50, Total=756 [2024-11-17 00:39:43,967 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 18 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-17 00:39:43,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 940 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 743 Invalid, 0 Unknown, 120 Unchecked, 0.4s Time] [2024-11-17 00:39:43,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-17 00:39:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-17 00:39:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 139 states have (on average 1.410071942446043) internal successors, (196), 163 states have internal predecessors, (196), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:39:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 226 transitions. [2024-11-17 00:39:43,972 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 226 transitions. Word has length 39 [2024-11-17 00:39:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:39:43,973 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 226 transitions. [2024-11-17 00:39:43,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.238095238095238) internal successors, (47), 16 states have internal predecessors, (47), 3 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:39:43,974 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 226 transitions. [2024-11-17 00:39:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-17 00:39:43,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:39:43,974 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:39:43,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 00:39:44,178 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 [2024-11-17 00:39:44,179 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:39:44,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:39:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash 463867720, now seen corresponding path program 1 times [2024-11-17 00:39:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:39:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364390824] [2024-11-17 00:39:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:44,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:39:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:44,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:39:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:44,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:39:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:44,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:39:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:39:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364390824] [2024-11-17 00:39:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364390824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:39:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143839949] [2024-11-17 00:39:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:39:45,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:39:45,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:39:45,082 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) [2024-11-17 00:39:45,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 00:39:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:39:45,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-17 00:39:45,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:39:45,236 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 [2024-11-17 00:39:45,294 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 [2024-11-17 00:39:45,300 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 [2024-11-17 00:39:45,509 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:39:45,509 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 [2024-11-17 00:39:45,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 00:39:45,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-17 00:39:45,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:39:45,969 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:39:45,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:39:45,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 31 [2024-11-17 00:39:45,985 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 00:39:45,985 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 29 treesize of output 16 [2024-11-17 00:39:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:39:45,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:39:46,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:39:46,971 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 1015 treesize of output 949 [2024-11-17 00:39:47,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:39:47,093 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 1152 treesize of output 1168 [2024-11-17 00:40:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143839949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:02,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:40:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 33 [2024-11-17 00:40:02,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928303800] [2024-11-17 00:40:02,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:02,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-17 00:40:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-17 00:40:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1460, Unknown=0, NotChecked=0, Total=1560 [2024-11-17 00:40:02,104 INFO L87 Difference]: Start difference. First operand 182 states and 226 transitions. Second operand has 33 states, 32 states have (on average 1.78125) internal successors, (57), 26 states have internal predecessors, (57), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-17 00:40:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:03,002 INFO L93 Difference]: Finished difference Result 188 states and 233 transitions. [2024-11-17 00:40:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-17 00:40:03,003 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.78125) internal successors, (57), 26 states have internal predecessors, (57), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 40 [2024-11-17 00:40:03,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:03,004 INFO L225 Difference]: With dead ends: 188 [2024-11-17 00:40:03,004 INFO L226 Difference]: Without dead ends: 188 [2024-11-17 00:40:03,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=149, Invalid=2013, Unknown=0, NotChecked=0, Total=2162 [2024-11-17 00:40:03,005 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 27 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:03,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2012 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-17 00:40:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-17 00:40:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2024-11-17 00:40:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 142 states have (on average 1.4014084507042253) internal successors, (199), 166 states have internal predecessors, (199), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:40:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 229 transitions. [2024-11-17 00:40:03,012 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 229 transitions. Word has length 40 [2024-11-17 00:40:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:03,014 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 229 transitions. [2024-11-17 00:40:03,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.78125) internal successors, (57), 26 states have internal predecessors, (57), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-17 00:40:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 229 transitions. [2024-11-17 00:40:03,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-17 00:40:03,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:03,015 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:03,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 00:40:03,219 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 [2024-11-17 00:40:03,220 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:03,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:03,220 INFO L85 PathProgramCache]: Analyzing trace with hash 546222720, now seen corresponding path program 1 times [2024-11-17 00:40:03,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:03,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832934009] [2024-11-17 00:40:03,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:03,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:03,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:03,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:03,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:40:04,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:04,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832934009] [2024-11-17 00:40:04,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832934009] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:04,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623400813] [2024-11-17 00:40:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:04,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:04,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:04,043 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) [2024-11-17 00:40:04,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 00:40:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:04,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-17 00:40:04,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:04,324 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 [2024-11-17 00:40:04,440 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 [2024-11-17 00:40:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 00:40:04,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 00:40:04,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623400813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:40:04,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 00:40:04,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [17] total 32 [2024-11-17 00:40:04,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553634461] [2024-11-17 00:40:04,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:40:04,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 00:40:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:04,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 00:40:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2024-11-17 00:40:04,500 INFO L87 Difference]: Start difference. First operand 185 states and 229 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:40:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:04,768 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2024-11-17 00:40:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 00:40:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2024-11-17 00:40:04,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:04,769 INFO L225 Difference]: With dead ends: 192 [2024-11-17 00:40:04,769 INFO L226 Difference]: Without dead ends: 192 [2024-11-17 00:40:04,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=1104, Unknown=0, NotChecked=0, Total=1190 [2024-11-17 00:40:04,771 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 34 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:04,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1301 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:40:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-17 00:40:04,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2024-11-17 00:40:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 144 states have (on average 1.3888888888888888) internal successors, (200), 168 states have internal predecessors, (200), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 15 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:40:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 230 transitions. [2024-11-17 00:40:04,776 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 230 transitions. Word has length 41 [2024-11-17 00:40:04,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:04,776 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 230 transitions. [2024-11-17 00:40:04,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-17 00:40:04,777 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 230 transitions. [2024-11-17 00:40:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-17 00:40:04,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:04,778 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:04,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-17 00:40:04,978 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 [2024-11-17 00:40:04,978 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:04,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:04,979 INFO L85 PathProgramCache]: Analyzing trace with hash 89372111, now seen corresponding path program 1 times [2024-11-17 00:40:04,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:04,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975714497] [2024-11-17 00:40:04,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:04,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-17 00:40:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-17 00:40:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:40:05,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:05,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975714497] [2024-11-17 00:40:05,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975714497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:40:05,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:40:05,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-17 00:40:05,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552390138] [2024-11-17 00:40:05,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:40:05,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 00:40:05,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:05,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 00:40:05,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-17 00:40:05,296 INFO L87 Difference]: Start difference. First operand 187 states and 230 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:40:05,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:05,537 INFO L93 Difference]: Finished difference Result 190 states and 236 transitions. [2024-11-17 00:40:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 00:40:05,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2024-11-17 00:40:05,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:05,538 INFO L225 Difference]: With dead ends: 190 [2024-11-17 00:40:05,539 INFO L226 Difference]: Without dead ends: 190 [2024-11-17 00:40:05,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-17 00:40:05,539 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 19 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:05,539 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 566 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:40:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-17 00:40:05,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-17 00:40:05,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 147 states have (on average 1.401360544217687) internal successors, (206), 168 states have internal predecessors, (206), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:40:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 236 transitions. [2024-11-17 00:40:05,545 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 236 transitions. Word has length 51 [2024-11-17 00:40:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:05,545 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 236 transitions. [2024-11-17 00:40:05,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:40:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 236 transitions. [2024-11-17 00:40:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-17 00:40:05,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:05,547 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:05,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-17 00:40:05,547 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:05,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash 89372112, now seen corresponding path program 1 times [2024-11-17 00:40:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927006817] [2024-11-17 00:40:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-17 00:40:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-17 00:40:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:05,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 00:40:06,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:06,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927006817] [2024-11-17 00:40:06,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927006817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:40:06,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:40:06,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-17 00:40:06,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794796774] [2024-11-17 00:40:06,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:40:06,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 00:40:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:06,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 00:40:06,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-17 00:40:06,019 INFO L87 Difference]: Start difference. First operand 190 states and 236 transitions. Second operand has 13 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:40:06,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:06,310 INFO L93 Difference]: Finished difference Result 190 states and 233 transitions. [2024-11-17 00:40:06,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 00:40:06,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2024-11-17 00:40:06,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:06,312 INFO L225 Difference]: With dead ends: 190 [2024-11-17 00:40:06,312 INFO L226 Difference]: Without dead ends: 190 [2024-11-17 00:40:06,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-17 00:40:06,313 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 9 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:06,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 650 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:40:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-17 00:40:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-17 00:40:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 147 states have (on average 1.380952380952381) internal successors, (203), 168 states have internal predecessors, (203), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:40:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 233 transitions. [2024-11-17 00:40:06,318 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 233 transitions. Word has length 51 [2024-11-17 00:40:06,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:06,319 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 233 transitions. [2024-11-17 00:40:06,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:40:06,319 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 233 transitions. [2024-11-17 00:40:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-17 00:40:06,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:06,320 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:06,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-17 00:40:06,320 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:06,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:06,323 INFO L85 PathProgramCache]: Analyzing trace with hash 412646686, now seen corresponding path program 1 times [2024-11-17 00:40:06,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710834156] [2024-11-17 00:40:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:06,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:06,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:06,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:06,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:40:07,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:07,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710834156] [2024-11-17 00:40:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710834156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:07,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497057918] [2024-11-17 00:40:07,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:07,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:07,133 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) [2024-11-17 00:40:07,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 00:40:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:07,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-17 00:40:07,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:07,271 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 [2024-11-17 00:40:07,289 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 [2024-11-17 00:40:07,295 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 [2024-11-17 00:40:07,323 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 19 treesize of output 18 [2024-11-17 00:40:07,332 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 19 treesize of output 18 [2024-11-17 00:40:07,567 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 [2024-11-17 00:40:07,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:07,634 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 16 [2024-11-17 00:40:07,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:07,643 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 16 [2024-11-17 00:40:07,656 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-17 00:40:07,656 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 [2024-11-17 00:40:07,730 INFO L349 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2024-11-17 00:40:07,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 31 [2024-11-17 00:40:07,762 INFO L349 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2024-11-17 00:40:07,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 31 [2024-11-17 00:40:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:40:08,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:40:08,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497057918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:08,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:40:08,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 31 [2024-11-17 00:40:08,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97873415] [2024-11-17 00:40:08,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:08,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 00:40:08,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 00:40:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1088, Unknown=1, NotChecked=66, Total=1260 [2024-11-17 00:40:08,528 INFO L87 Difference]: Start difference. First operand 190 states and 233 transitions. Second operand has 31 states, 29 states have (on average 2.413793103448276) internal successors, (70), 25 states have internal predecessors, (70), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 00:40:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:09,518 INFO L93 Difference]: Finished difference Result 196 states and 240 transitions. [2024-11-17 00:40:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 00:40:09,519 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.413793103448276) internal successors, (70), 25 states have internal predecessors, (70), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2024-11-17 00:40:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:09,520 INFO L225 Difference]: With dead ends: 196 [2024-11-17 00:40:09,520 INFO L226 Difference]: Without dead ends: 196 [2024-11-17 00:40:09,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=1735, Unknown=2, NotChecked=84, Total=1980 [2024-11-17 00:40:09,523 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 8 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:09,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1685 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 981 Invalid, 0 Unknown, 135 Unchecked, 0.5s Time] [2024-11-17 00:40:09,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-17 00:40:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2024-11-17 00:40:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 152 states have (on average 1.368421052631579) internal successors, (208), 173 states have internal predecessors, (208), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-17 00:40:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 238 transitions. [2024-11-17 00:40:09,530 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 238 transitions. Word has length 45 [2024-11-17 00:40:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:09,530 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 238 transitions. [2024-11-17 00:40:09,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.413793103448276) internal successors, (70), 25 states have internal predecessors, (70), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-17 00:40:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 238 transitions. [2024-11-17 00:40:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:40:09,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:09,531 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:09,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-17 00:40:09,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:09,732 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:09,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1990448066, now seen corresponding path program 2 times [2024-11-17 00:40:09,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:09,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912759784] [2024-11-17 00:40:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:09,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:09,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:09,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:10,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:10,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:40:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:10,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 00:40:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 00:40:11,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:11,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912759784] [2024-11-17 00:40:11,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912759784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:11,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549602566] [2024-11-17 00:40:11,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:40:11,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:11,285 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) [2024-11-17 00:40:11,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 00:40:11,445 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:40:11,445 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:40:11,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-17 00:40:11,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:11,459 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 [2024-11-17 00:40:11,610 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 [2024-11-17 00:40:11,640 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 27 treesize of output 15 [2024-11-17 00:40:11,720 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 [2024-11-17 00:40:11,743 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_create_internal_~now~0.base_28 Int) (v_DerPreprocessor_5 Int)) (let ((.cse0 (store |c_old(#valid)| v_create_internal_~now~0.base_28 1))) (and (= |c_#valid| (store .cse0 c_create_internal_~now~0.base 1)) (= (select (store .cse0 c_create_internal_~now~0.base v_DerPreprocessor_5) v_create_internal_~now~0.base_28) 1)))) (exists ((v_create_internal_~now~0.base_28 Int) (alloc_and_zero_internal_~pi~1.base Int)) (let ((.cse1 (store (store |c_old(#valid)| v_create_internal_~now~0.base_28 1) c_create_internal_~now~0.base (select |c_#valid| c_create_internal_~now~0.base)))) (and (= (select .cse1 v_create_internal_~now~0.base_28) 1) (= |c_#valid| (store .cse1 alloc_and_zero_internal_~pi~1.base 1)) (not (= alloc_and_zero_internal_~pi~1.base c_create_internal_~now~0.base)))))) is different from true [2024-11-17 00:40:11,969 INFO L349 Elim1Store]: treesize reduction 137, result has 16.0 percent of original size [2024-11-17 00:40:11,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 92 [2024-11-17 00:40:11,998 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:11,998 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:11,999 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:12,000 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:12,016 INFO L349 Elim1Store]: treesize reduction 189, result has 0.5 percent of original size [2024-11-17 00:40:12,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 38 treesize of output 10 [2024-11-17 00:40:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 9 not checked. [2024-11-17 00:40:12,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:40:12,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549602566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:12,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:40:12,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 30 [2024-11-17 00:40:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620052150] [2024-11-17 00:40:12,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:12,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 00:40:12,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:12,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 00:40:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=797, Unknown=6, NotChecked=122, Total=1122 [2024-11-17 00:40:12,381 INFO L87 Difference]: Start difference. First operand 195 states and 238 transitions. Second operand has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-17 00:40:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:14,706 INFO L93 Difference]: Finished difference Result 217 states and 271 transitions. [2024-11-17 00:40:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:40:14,707 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 48 [2024-11-17 00:40:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:14,708 INFO L225 Difference]: With dead ends: 217 [2024-11-17 00:40:14,708 INFO L226 Difference]: Without dead ends: 217 [2024-11-17 00:40:14,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=379, Invalid=1344, Unknown=7, NotChecked=162, Total=1892 [2024-11-17 00:40:14,709 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 91 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 79 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 325 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:14,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 906 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 798 Invalid, 2 Unknown, 325 Unchecked, 1.1s Time] [2024-11-17 00:40:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-17 00:40:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 206. [2024-11-17 00:40:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 161 states have (on average 1.360248447204969) internal successors, (219), 182 states have internal predecessors, (219), 12 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-17 00:40:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 255 transitions. [2024-11-17 00:40:14,715 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 255 transitions. Word has length 48 [2024-11-17 00:40:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:14,715 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 255 transitions. [2024-11-17 00:40:14,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.066666666666667) internal successors, (62), 23 states have internal predecessors, (62), 8 states have call successors, (10), 3 states have call predecessors, (10), 8 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-17 00:40:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 255 transitions. [2024-11-17 00:40:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:40:14,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:14,716 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:14,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 00:40:14,916 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,SelfDestructingSolverStorable22 [2024-11-17 00:40:14,917 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:14,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1990448065, now seen corresponding path program 2 times [2024-11-17 00:40:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612700601] [2024-11-17 00:40:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:15,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:15,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:15,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:15,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:40:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:16,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 00:40:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:16,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:40:16,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:16,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612700601] [2024-11-17 00:40:16,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612700601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:16,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011347931] [2024-11-17 00:40:16,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 00:40:16,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:16,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:16,965 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) [2024-11-17 00:40:16,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 00:40:17,132 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 00:40:17,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 00:40:17,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-17 00:40:17,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:17,140 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 6 treesize of output 5 [2024-11-17 00:40:17,144 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 [2024-11-17 00:40:17,427 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 [2024-11-17 00:40:17,470 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 54 treesize of output 34 [2024-11-17 00:40:17,540 WARN L873 $PredicateComparison]: unable to prove that (exists ((create_internal_~now~0.base Int) (v_create_internal_~now~0.base_35 Int)) (let ((.cse0 (store |c_old(#valid)| v_create_internal_~now~0.base_35 1))) (and (= (select |c_old(#valid)| v_create_internal_~now~0.base_35) 0) (= |c_#valid| (store .cse0 create_internal_~now~0.base 1)) (= (store (store |c_old(#length)| v_create_internal_~now~0.base_35 (select |c_#length| v_create_internal_~now~0.base_35)) create_internal_~now~0.base (select |c_#length| create_internal_~now~0.base)) |c_#length|) (= (select .cse0 create_internal_~now~0.base) 0)))) is different from true [2024-11-17 00:40:17,568 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 [2024-11-17 00:40:17,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:17,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:17,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:17,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:17,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:17,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2024-11-17 00:40:17,790 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2024-11-17 00:40:17,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 33 [2024-11-17 00:40:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 13 not checked. [2024-11-17 00:40:17,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:40:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011347931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:18,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:40:18,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2024-11-17 00:40:18,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560880975] [2024-11-17 00:40:18,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:18,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-17 00:40:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:18,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-17 00:40:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=876, Unknown=2, NotChecked=122, Total=1122 [2024-11-17 00:40:18,134 INFO L87 Difference]: Start difference. First operand 206 states and 255 transitions. Second operand has 32 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 24 states have internal predecessors, (68), 9 states have call successors, (10), 3 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-17 00:40:22,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:23,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-17 00:40:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:24,946 INFO L93 Difference]: Finished difference Result 228 states and 283 transitions. [2024-11-17 00:40:24,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:40:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 24 states have internal predecessors, (68), 9 states have call successors, (10), 3 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 48 [2024-11-17 00:40:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:24,948 INFO L225 Difference]: With dead ends: 228 [2024-11-17 00:40:24,948 INFO L226 Difference]: Without dead ends: 228 [2024-11-17 00:40:24,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=184, Invalid=1382, Unknown=2, NotChecked=154, Total=1722 [2024-11-17 00:40:24,949 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 61 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 343 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:24,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1024 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1021 Invalid, 1 Unknown, 343 Unchecked, 6.1s Time] [2024-11-17 00:40:24,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-17 00:40:24,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 202. [2024-11-17 00:40:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 158 states have (on average 1.360759493670886) internal successors, (215), 179 states have internal predecessors, (215), 12 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (20), 19 states have call predecessors, (20), 12 states have call successors, (20) [2024-11-17 00:40:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 247 transitions. [2024-11-17 00:40:24,955 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 247 transitions. Word has length 48 [2024-11-17 00:40:24,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:24,956 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 247 transitions. [2024-11-17 00:40:24,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 24 states have internal predecessors, (68), 9 states have call successors, (10), 3 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-17 00:40:24,956 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 247 transitions. [2024-11-17 00:40:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:40:24,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:24,957 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:24,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-17 00:40:25,158 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,SelfDestructingSolverStorable23 [2024-11-17 00:40:25,158 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:25,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:25,159 INFO L85 PathProgramCache]: Analyzing trace with hash -498290622, now seen corresponding path program 1 times [2024-11-17 00:40:25,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:25,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185292676] [2024-11-17 00:40:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:25,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:25,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:25,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:25,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:40:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:40:25,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:25,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185292676] [2024-11-17 00:40:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185292676] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:25,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543922349] [2024-11-17 00:40:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:25,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:25,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:25,557 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) [2024-11-17 00:40:25,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 00:40:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:25,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-17 00:40:25,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:25,767 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 [2024-11-17 00:40:25,822 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 [2024-11-17 00:40:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:40:25,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:40:25,845 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 [2024-11-17 00:40:25,921 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-17 00:40:25,921 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 12 treesize of output 11 [2024-11-17 00:40:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:40:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543922349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:40:25,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:40:25,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 22 [2024-11-17 00:40:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605013452] [2024-11-17 00:40:25,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:25,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-17 00:40:25,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-17 00:40:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2024-11-17 00:40:25,942 INFO L87 Difference]: Start difference. First operand 202 states and 247 transitions. Second operand has 23 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 00:40:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:26,473 INFO L93 Difference]: Finished difference Result 229 states and 279 transitions. [2024-11-17 00:40:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 00:40:26,474 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 48 [2024-11-17 00:40:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:26,475 INFO L225 Difference]: With dead ends: 229 [2024-11-17 00:40:26,475 INFO L226 Difference]: Without dead ends: 229 [2024-11-17 00:40:26,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2024-11-17 00:40:26,476 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 42 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:26,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1503 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-17 00:40:26,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-17 00:40:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 218. [2024-11-17 00:40:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 173 states have (on average 1.3410404624277457) internal successors, (232), 194 states have internal predecessors, (232), 12 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-17 00:40:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 268 transitions. [2024-11-17 00:40:26,493 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 268 transitions. Word has length 48 [2024-11-17 00:40:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:26,493 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 268 transitions. [2024-11-17 00:40:26,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 00:40:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 268 transitions. [2024-11-17 00:40:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:40:26,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:26,496 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:26,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 00:40:26,697 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,SelfDestructingSolverStorable24 [2024-11-17 00:40:26,697 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:26,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash -498290621, now seen corresponding path program 1 times [2024-11-17 00:40:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:26,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395501240] [2024-11-17 00:40:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:26,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:27,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:27,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:27,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:27,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:40:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:40:27,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:27,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395501240] [2024-11-17 00:40:27,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395501240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:27,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923841584] [2024-11-17 00:40:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:27,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:27,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:27,382 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) [2024-11-17 00:40:27,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 00:40:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:27,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-17 00:40:27,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:27,707 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 [2024-11-17 00:40:27,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-17 00:40:27,817 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 [2024-11-17 00:40:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:40:27,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:40:28,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2024-11-17 00:40:28,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:28,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:28,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:28,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 00:40:28,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:40:28,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2024-11-17 00:40:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 00:40:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923841584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:40:28,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:40:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 14] total 37 [2024-11-17 00:40:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867269306] [2024-11-17 00:40:28,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:28,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-17 00:40:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-17 00:40:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1304, Unknown=0, NotChecked=0, Total=1406 [2024-11-17 00:40:28,339 INFO L87 Difference]: Start difference. First operand 218 states and 268 transitions. Second operand has 38 states, 35 states have (on average 2.6) internal successors, (91), 31 states have internal predecessors, (91), 7 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-17 00:40:29,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:29,124 INFO L93 Difference]: Finished difference Result 229 states and 278 transitions. [2024-11-17 00:40:29,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-17 00:40:29,124 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.6) internal successors, (91), 31 states have internal predecessors, (91), 7 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) Word has length 48 [2024-11-17 00:40:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:29,125 INFO L225 Difference]: With dead ends: 229 [2024-11-17 00:40:29,125 INFO L226 Difference]: Without dead ends: 229 [2024-11-17 00:40:29,126 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1591, Unknown=0, NotChecked=0, Total=1722 [2024-11-17 00:40:29,127 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 44 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:29,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 2591 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-17 00:40:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-17 00:40:29,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 218. [2024-11-17 00:40:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 173 states have (on average 1.3352601156069364) internal successors, (231), 194 states have internal predecessors, (231), 12 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-17 00:40:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 267 transitions. [2024-11-17 00:40:29,133 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 267 transitions. Word has length 48 [2024-11-17 00:40:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:29,133 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 267 transitions. [2024-11-17 00:40:29,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.6) internal successors, (91), 31 states have internal predecessors, (91), 7 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (11), 10 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-17 00:40:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 267 transitions. [2024-11-17 00:40:29,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:40:29,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:29,134 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:29,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 00:40:29,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-17 00:40:29,339 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:29,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:29,339 INFO L85 PathProgramCache]: Analyzing trace with hash 959668926, now seen corresponding path program 1 times [2024-11-17 00:40:29,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:29,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159848636] [2024-11-17 00:40:29,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:29,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:40:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:29,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159848636] [2024-11-17 00:40:29,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159848636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:40:29,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:40:29,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-17 00:40:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160280612] [2024-11-17 00:40:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:40:29,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 00:40:29,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:29,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 00:40:29,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-17 00:40:29,462 INFO L87 Difference]: Start difference. First operand 218 states and 267 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:40:29,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:29,702 INFO L93 Difference]: Finished difference Result 260 states and 313 transitions. [2024-11-17 00:40:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 00:40:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2024-11-17 00:40:29,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:29,704 INFO L225 Difference]: With dead ends: 260 [2024-11-17 00:40:29,704 INFO L226 Difference]: Without dead ends: 260 [2024-11-17 00:40:29,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-17 00:40:29,705 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 45 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:29,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 443 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:40:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-17 00:40:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 238. [2024-11-17 00:40:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 194 states have (on average 1.3556701030927836) internal successors, (263), 214 states have internal predecessors, (263), 12 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-17 00:40:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 299 transitions. [2024-11-17 00:40:29,711 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 299 transitions. Word has length 48 [2024-11-17 00:40:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:29,711 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 299 transitions. [2024-11-17 00:40:29,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:40:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 299 transitions. [2024-11-17 00:40:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-17 00:40:29,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:29,712 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:29,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-17 00:40:29,713 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:29,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash 959668927, now seen corresponding path program 1 times [2024-11-17 00:40:29,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:29,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004321981] [2024-11-17 00:40:29,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:40:29,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004321981] [2024-11-17 00:40:29,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004321981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:29,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993843907] [2024-11-17 00:40:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:29,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:29,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:29,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:40:29,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 00:40:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:30,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-17 00:40:30,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:40:30,200 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:40:30,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:40:30,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2024-11-17 00:40:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 00:40:30,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993843907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 00:40:30,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 00:40:30,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 5] total 16 [2024-11-17 00:40:30,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88826055] [2024-11-17 00:40:30,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:30,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-17 00:40:30,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:30,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 00:40:30,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:40:30,385 INFO L87 Difference]: Start difference. First operand 238 states and 299 transitions. Second operand has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:40:30,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:30,659 INFO L93 Difference]: Finished difference Result 282 states and 350 transitions. [2024-11-17 00:40:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 00:40:30,659 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2024-11-17 00:40:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:30,660 INFO L225 Difference]: With dead ends: 282 [2024-11-17 00:40:30,661 INFO L226 Difference]: Without dead ends: 282 [2024-11-17 00:40:30,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2024-11-17 00:40:30,661 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 82 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:30,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 899 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-17 00:40:30,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-17 00:40:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 267. [2024-11-17 00:40:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 223 states have (on average 1.3677130044843049) internal successors, (305), 243 states have internal predecessors, (305), 12 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-17 00:40:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 341 transitions. [2024-11-17 00:40:30,669 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 341 transitions. Word has length 48 [2024-11-17 00:40:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:30,669 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 341 transitions. [2024-11-17 00:40:30,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.125) internal successors, (82), 15 states have internal predecessors, (82), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-17 00:40:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 341 transitions. [2024-11-17 00:40:30,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-17 00:40:30,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:30,671 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:30,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-17 00:40:30,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:30,872 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:30,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1176188992, now seen corresponding path program 1 times [2024-11-17 00:40:30,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:30,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727488123] [2024-11-17 00:40:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:30,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:30,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 00:40:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727488123] [2024-11-17 00:40:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727488123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 00:40:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 00:40:31,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-17 00:40:31,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502808477] [2024-11-17 00:40:31,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 00:40:31,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 00:40:31,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:31,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 00:40:31,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:40:31,041 INFO L87 Difference]: Start difference. First operand 267 states and 341 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:40:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:31,212 INFO L93 Difference]: Finished difference Result 277 states and 347 transitions. [2024-11-17 00:40:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 00:40:31,212 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2024-11-17 00:40:31,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:31,213 INFO L225 Difference]: With dead ends: 277 [2024-11-17 00:40:31,214 INFO L226 Difference]: Without dead ends: 277 [2024-11-17 00:40:31,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-17 00:40:31,215 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 45 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:31,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 749 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-17 00:40:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-17 00:40:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 267. [2024-11-17 00:40:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 223 states have (on average 1.358744394618834) internal successors, (303), 243 states have internal predecessors, (303), 12 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-17 00:40:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 339 transitions. [2024-11-17 00:40:31,228 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 339 transitions. Word has length 50 [2024-11-17 00:40:31,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:31,228 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 339 transitions. [2024-11-17 00:40:31,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-17 00:40:31,228 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 339 transitions. [2024-11-17 00:40:31,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-17 00:40:31,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:31,229 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:31,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-17 00:40:31,229 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:31,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:31,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1819075989, now seen corresponding path program 1 times [2024-11-17 00:40:31,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:31,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156865422] [2024-11-17 00:40:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:31,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-17 00:40:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-17 00:40:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:40:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 00:40:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156865422] [2024-11-17 00:40:31,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156865422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:31,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440272235] [2024-11-17 00:40:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:31,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:31,828 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:40:31,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 00:40:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:32,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 00:40:32,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:32,028 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 [2024-11-17 00:40:32,038 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 [2024-11-17 00:40:32,046 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 [2024-11-17 00:40:32,142 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 [2024-11-17 00:40:32,194 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((create_internal_~now~0.base Int)) (and (= (select |c_#valid| create_internal_~now~0.base) 1) (exists ((alloc_and_zero_internal_~pi~1.base Int)) (= |c_#valid| (store (store |c_old(#valid)| create_internal_~now~0.base 1) alloc_and_zero_internal_~pi~1.base 1))))) (exists ((create_internal_~now~0.base Int)) (= |c_#valid| (store |c_old(#valid)| create_internal_~now~0.base 1)))) is different from true [2024-11-17 00:40:32,310 INFO L349 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2024-11-17 00:40:32,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 60 [2024-11-17 00:40:32,332 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:32,333 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:32,334 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 00:40:32,343 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2024-11-17 00:40:32,344 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 4 case distinctions, treesize of input 25 treesize of output 7 [2024-11-17 00:40:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2024-11-17 00:40:32,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 00:40:32,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440272235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:32,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 00:40:32,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2024-11-17 00:40:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957427754] [2024-11-17 00:40:32,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 00:40:32,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 00:40:32,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 00:40:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 00:40:32,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=403, Unknown=2, NotChecked=86, Total=600 [2024-11-17 00:40:32,623 INFO L87 Difference]: Start difference. First operand 267 states and 339 transitions. Second operand has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 17 states have internal predecessors, (70), 6 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-17 00:40:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 00:40:33,563 INFO L93 Difference]: Finished difference Result 272 states and 348 transitions. [2024-11-17 00:40:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-17 00:40:33,564 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 17 states have internal predecessors, (70), 6 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) Word has length 63 [2024-11-17 00:40:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-17 00:40:33,565 INFO L225 Difference]: With dead ends: 272 [2024-11-17 00:40:33,565 INFO L226 Difference]: Without dead ends: 272 [2024-11-17 00:40:33,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=836, Unknown=2, NotChecked=126, Total=1190 [2024-11-17 00:40:33,566 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 51 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-17 00:40:33,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 853 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 667 Invalid, 1 Unknown, 263 Unchecked, 0.5s Time] [2024-11-17 00:40:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-17 00:40:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2024-11-17 00:40:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 226 states have (on average 1.3672566371681416) internal successors, (309), 243 states have internal predecessors, (309), 12 states have call successors, (12), 3 states have call predecessors, (12), 6 states have return successors, (24), 23 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-17 00:40:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 345 transitions. [2024-11-17 00:40:33,572 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 345 transitions. Word has length 63 [2024-11-17 00:40:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-17 00:40:33,572 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 345 transitions. [2024-11-17 00:40:33,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 17 states have internal predecessors, (70), 6 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-17 00:40:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 345 transitions. [2024-11-17 00:40:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-17 00:40:33,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-17 00:40:33,574 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 00:40:33,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 00:40:33,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:33,775 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-17 00:40:33,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 00:40:33,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1819075988, now seen corresponding path program 1 times [2024-11-17 00:40:33,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 00:40:33,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523628615] [2024-11-17 00:40:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:33,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 00:40:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 00:40:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 00:40:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-17 00:40:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-17 00:40:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 00:40:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 00:40:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 00:40:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 00:40:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523628615] [2024-11-17 00:40:34,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523628615] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 00:40:34,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758197049] [2024-11-17 00:40:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 00:40:34,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 00:40:34,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 00:40:34,670 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 00:40:34,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 00:40:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 00:40:34,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-17 00:40:34,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 00:40:34,893 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 [2024-11-17 00:40:34,897 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 [2024-11-17 00:40:34,965 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 [2024-11-17 00:40:34,968 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 [2024-11-17 00:40:34,995 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 26 treesize of output 14 [2024-11-17 00:40:35,146 WARN L873 $PredicateComparison]: unable to prove that (exists ((create_internal_~now~0.base Int)) (and (= (select |c_old(#valid)| create_internal_~now~0.base) 0) (= |c_#length| (store |c_old(#length)| create_internal_~now~0.base (select |c_#length| create_internal_~now~0.base))) (= |c_#valid| (store |c_old(#valid)| create_internal_~now~0.base (select |c_#valid| create_internal_~now~0.base))))) is different from true [2024-11-17 00:40:35,165 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 [2024-11-17 00:40:35,367 INFO L349 Elim1Store]: treesize reduction 71, result has 15.5 percent of original size [2024-11-17 00:40:35,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 76 [2024-11-17 00:40:35,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 00:40:35,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74